Disclosure of Invention
Aiming at the defects of the technology, the invention discloses an application method of an assembled steel-concrete composite structure based on BIM technology, wherein the BIM building three-dimensional digital modeling adopts a stress characteristic finite element analysis algorithm to carry out stress analysis on the assembled steel-concrete composite structure, the BIM building three-dimensional digital modeling adopts a building vibration response prediction analysis mechanism to carry out vibration analysis on the assembled steel-concrete composite structure, the BIM building three-dimensional digital modeling adopts a concrete temperature rise calculation algorithm to carry out thermal calculation analysis on the assembled steel-concrete composite structure, the construction structure analysis model is realized, the problem that a core model of an assembled steel-concrete composite structure typical engineering cannot be established based on the BIM technology is solved, the whole life cycle management of the assembled steel-concrete composite structure is realized through a data sensing processing module, a communication module, a database module and a BIM system module, the problem that the BIM concept and an Internet of things system cannot be fused is solved, and the construction scheme comprises a foundation processing module, a steel structure manufacturing module, a concrete pouring module and a standardized construction member manufacturing module, and a typical construction scheme of the assembled steel-concrete composite structure are pre-modeling scheme.
Analysis in view of this, the invention provides a method for applying an assembled steel-concrete composite structure based on BIM technology, comprising the following steps:
firstly, modeling geometrical parameters and space coordination are carried out by adopting BIM building three-dimensional digital modeling, and a core mathematical model of an assembled steel-concrete combined structure typical project is established, wherein the core mathematical model at least comprises building outline building, building structure, water supply and drainage, space layout, door and window positions and sizes;
Carrying out stress analysis on the assembled steel-concrete combined structure by adopting a stress characteristic finite element analysis algorithm in the BIM building three-dimensional digital modeling, carrying out vibration analysis on the assembled steel-concrete combined structure by adopting a building vibration response prediction analysis mechanism in the BIM building three-dimensional digital modeling, carrying out thermal calculation analysis on the assembled steel-concrete combined structure by adopting a concrete temperature rise calculation algorithm in the BIM building three-dimensional digital modeling, and converting the established core mathematical model into a building structure analysis model;
Thirdly, carrying out information transmission and cooperative work by adopting an Internet of things system to realize the whole life cycle management of the fabricated steel-concrete combined structure, wherein the Internet of things system comprises a data sensing processing module, a communication module, a database module and a BIM system module;
In the third step, the output end of the data sensing processing module is connected with the input end of the communication module, the output end of the communication module is connected with the input end of the database module, and the output end of the database module is connected with the input end of the BIM system module;
Step four, a construction scheme of an assembled steel-concrete combined structure typical project is established according to a building structure analysis model and an Internet of things system, wherein the construction scheme comprises a foundation treatment module, a steel structure manufacturing module, a concrete pouring module and a standardized member manufacturing module;
in the fourth step, the output end of the foundation treatment module is connected with the input end of the steel structure manufacturing module, the output end of the steel structure manufacturing module is connected with the input end of the concrete pouring module, and the output end of the concrete pouring module is connected with the input end of the standardized component manufacturing module;
and fifthly, carrying out scheme previewing simulation according to a construction scheme of the assembled steel-concrete combined structure typical engineering, realizing a visual effect and physical effect display previewing simulation process through virtual reality simulation, checking that workers and equipment are in correct positions and states, and ensuring the safety of the ongoing operation.
As a further technical scheme of the invention, the working method of the stress characteristic finite element analysis algorithm comprises the following steps:
s1, modeling an assembled steel-concrete combined structure into a continuous geometric unit by adopting grid subdivision, wherein the grid subdivision carries out finite element analysis on the type and the size of the unit through a three-dimensional space scalar field analysis engine to determine the type and the size of the continuous geometric unit;
S2, establishing a self-constructed model of the fabricated steel material by adopting numerical simulation, wherein the numerical simulation determines elastic mechanical properties of the fabricated steel material according to stress-strain curves, a stress characteristic finite element analysis algorithm applies boundary conditions of the self-constructed model by using a discrete smooth interpolation mechanism, the boundary conditions at least comprise supporting constraint, fixed constraint, sliding constraint, rotating constraint, plastic hinge constraint and external load, the discrete smooth interpolation mechanism determines the supporting constraint, the fixed constraint and the rotating constraint according to fixed point positions of the self-constructed model, the discrete smooth interpolation mechanism sets sliding constraint of the self-constructed model by using sliding nodes and sliding planes, the discrete smooth interpolation mechanism determines plastic hinge constraint according to plastic nodes of the self-constructed model, and the discrete smooth interpolation mechanism applies node load, plane load or line load of the self-constructed model by using triangular grid reconstruction to simulate and calculate external load, wherein the calculation formula of the external load is as follows:
in the formula (1), Y is the external load of the constitutive model, f is the load capacity inside the constitutive model, T is the external load action period of the constitutive model, x is the material elastic modulus of the constitutive model, and f is the material yield limit of the constitutive model;
s3, determining displacement, stress, linear strain and deformation frequency of the assembled steel-concrete combined structure by adopting a pushing type stress analysis mechanism, wherein the pushing type stress analysis mechanism establishes a stress mathematical equation according to a continuous geometric unit and a constitutive model, the stress mathematical equation calculates the stress and displacement coordinated with each other by the combined structure through an interface coordination function, the stress mathematical equation performs finite element analysis according to stress characteristics of the steel pipe and the concrete to calculate the linear strain and deformation frequency, and the stress calculation formula is as follows:
In the formula (2), V is the stress of the assembled steel-concrete composite structure, z is the elastic modulus of the assembled steel-concrete composite structure, u is the cross-sectional area of the assembled steel-concrete composite structure, and beta is the front end bearing capacity of the assembled steel-concrete composite structure;
The displacement calculation formula is as follows:
In the formula (3), Q is the displacement of the assembled steel-concrete composite structure, c is the elastic deformation of the assembled steel-concrete composite structure, b is the plastic deformation modulus of the assembled steel-concrete composite structure, θ is the interface deformation contact area of the interface coordination function, and h is the temperature deformation modulus of the assembled steel-concrete composite structure;
The linear strain calculation formula is as follows:
In the formula (4), R is the linear strain of the fabricated steel-concrete composite structure, y is the elastic modulus of the fabricated steel, m is the elastic modulus of the concrete material, Q is the Poisson's ratio of the fabricated steel to the concrete, and p is the cross-sectional area of the fabricated steel-concrete composite structure;
The deformation frequency calculation formula is as follows:
In the formula (5), F is the deformation frequency of the fabricated steel-concrete composite structure, S is the thickness of the fabricated steel-concrete composite structure, q is the density of concrete, l is the length of fabricated steel,Is the compressive strength of the concrete.
According to the invention, the construction vibration response prediction analysis mechanism adopts an inverse analysis input serial port to input the elastic modulus of the steel pipe, the density of the concrete and the strain of the steel bar into a core mathematical model of the typical engineering of the assembled steel-concrete combined structure, the construction vibration response prediction analysis mechanism further adopts an inverse analysis power function engine to determine the acting direction and the stress when the assembled steel-concrete combined structure is subjected to external force, the inverse analysis power function engine simulates the dynamic response of materials in the assembled steel-concrete combined structure through a power function numerical simulation mechanism to obtain the stress characteristic, the construction vibration response prediction analysis mechanism finally adopts an amplitude vibration equation to solve a discretized core mathematical model to obtain a vibration change curve when the assembled steel-concrete combined structure is subjected to external force, and the amplitude vibration equation synthesizes and analyzes the vibration response according to the stress characteristic to obtain the vibration change curve of the assembled steel-concrete combined structure.
As a further technical scheme of the invention, the working method of the concrete temperature rise calculation algorithm comprises the following steps:
S1, establishing a heat flow model of an assembled steel-concrete composite structure by adopting a hydrodynamic three-dimensional modeling, wherein the hydrodynamic three-dimensional modeling determines heat source, heat radiation and heat convection heat flow field distribution rules according to the geometric shape, material characteristics and external environmental condition factors of the steel-concrete composite structure, and establishes the heat flow model;
s2, a thermal stress model of the structure is built by adopting a concrete thermal stress mechanism, and the concrete thermal stress mechanism analyzes a temperature deformation and thermal stress distribution rule according to the deformation and stress distribution of the assembled steel-concrete composite structure material under the thermal load;
and S3, finally, converting the established heat flow model and thermal stress model into a building structure analysis model by adopting a combined weighting conversion engine, and carrying out thermal coupling analysis, wherein the combined weighting conversion engine carries out coupling analysis on a temperature field and a stress field through a thermal coupling mechanism to obtain the variation trend of the structure temperature and stress, the thermal coupling mechanism analyzes the temperature field distribution through an explicit coupling function, the thermal coupling mechanism analyzes the stress field distribution through an implicit coupling function, and finally, the thermal coupling mechanism strengthens the coupling relation between the temperature field and the stress field through semi-implicit coupling iteration to realize thermal coupling analysis after convergence.
The data sensing processing module adopts a sensor array to detect and record parameter data inside and outside a building, the parameter data at least comprises concrete strength, section size, weight, bearing capacity, connection strength and welding position, the data sensing processing module adopts a smooth difference algorithm to carry out smooth processing on the parameter data acquired by the sensor array to obtain smooth and continuous parameter data, the smooth difference algorithm adopts a local weighting polynomial to carry out high-order polynomial regression on the parameter data in a sliding interval to obtain derivatives of regression functions, the smooth difference algorithm obtains parameter data of different order derivatives according to the derivatives of the regression functions to realize parameter data smoothing processing, the communication module adopts a wireless Mesh ad hoc network backhaul network to communicate with the sensor array, the parameter data is transmitted to a database module and a BIM system module, the wireless Mesh ad hoc network backhaul network establishes a communication network with the database module and the BIM system module through a wireless backhaul protocol, the wireless Mesh backhaul network carries out parameter data communication of different nodes through a network node, and the wireless Mesh backhaul network transmits the parameter data to the gateway module or the BIM system module according to the total data transmission node.
According to the invention, the cloud data storage library is used for safely storing parameter data, the cloud data storage library is used for optimizing a buffer replacement process by adopting a heat replacement mechanism, the heat replacement mechanism is used for independently extracting a standard sequence of the parameter data through a network data packet capturing protocol, the design of a hierarchical storage mode of the parameter data is completed, the hierarchical storage of the parameter data is realized, the cloud data storage library is used for carrying out backup on the parameter data by adopting a backup disaster recovery engine, the backup disaster recovery engine is used for storing the backup parameter data in a different place through a copy storage protocol, the backup disaster recovery engine is used for completely recovering deleted parameter data through data mirror fault tolerance processing, the BIM system module is used for realizing the management of the whole life cycle of an assembled steel-concrete combined structure by adopting a digital operation management, the digital operation management is used for establishing the corresponding relation between a building structure analysis model and the parameter data through a strapdown inertial group configuration mechanism, the parameter data is loaded into the building structure analysis model through a dynamic loading protocol, the corresponding relation between a sensor and the building structure analysis model is realized, and the digital operation management is used for realizing the real-time sharing of a virtual construction resource by adopting a collaborative production management and a virtual production environment optimization mechanism 3.
According to the technical scheme, the foundation processing module adopts sound wave detection to determine the foundation bearing capacity, the sound wave detection adopts a sound wave detector to emit sound waves to the underground, the sound wave detector adopts an asynchronous timestamp to record the propagation time of shear waves received by two reflectors to determine the shear wave speed of a rock and soil layer, the sound wave detection determines the foundation bearing capacity through the shear wave speed and the soil density, the foundation processing module adopts an area with a pile foundation reinforcement load of 300kN/m2-600kN/m2, the foundation processing module adopts an area with a pile foundation reinforcement load of 0kN/m2-300kN/m2, the steel structure manufacturing module adopts an anchor rod reinforcement or pit excavation to widen the reinforcement load, the steel structure manufacturing module adopts a numerical control processing device to cut, shape and punch steel materials to ensure the accuracy and the standardization degree of steel members, the numerical control processing device adopts a source load cooperative frequency control engine to generate processing control instructions, the source load cooperative frequency control engine outputs processing control instructions according to a building structure analysis model and a steel beam system, the numerical control processing device controls the numerical control drilling machine to cut, shape and punch steel materials to be preprocessed according to the control instructions, the steel structure manufacturing module adopts a carbon fiber reinforcement plate to carry out reinforcement, and the steel manufacturing module can be firmly welded with steel lifting and assembly equipment is connected with a steel column through a steel crane welding machine.
According to the invention, the servo support equipment is used for carrying out template erection and support, the servo support equipment is used for carrying out support force numerical simulation calculation on concrete by adopting ANSYS finite element simulation, support points of a concrete structure are found out, concrete pouring accuracy and building quality are ensured, the concrete pouring module is used for carrying out concrete proportioning design by adopting a genetic proportioning algorithm, strength, compactness and durability of the concrete are ensured, the genetic proportioning algorithm is used for automatically adjusting the proportion of each material in the concrete proportioning by adopting a genetic fitness function, the concrete pouring module is finally used for carrying out concrete pouring, vibrating and maintenance by adopting a self-propelled vibrator, uniformity and stability of the concrete are ensured, the standardized component manufacturing module is used for carrying out standardized component design and manufacturing by adopting an assembled intelligent building intelligent manufacturing, and accuracy and standardization degree of the components are ensured, the assembled intelligent building intelligent manufacturing is used for carrying out visual design and three-dimensional simulation on the standardized component according to a building structure analysis model, material, size and performance are controlled in a fine manner, and prefabricated component material manufacturing is carried out full-dimensional control by adopting a full-standard model and full-dimensional control through the assembled intelligent manufacturing of the assembled intelligent building intelligent manufacturing, and full-dimensional control of the prefabricated component is ensured, and the life-state intelligent manufacturing is realized.
The invention has positive and beneficial effects different from the prior art:
The invention discloses an application method of an assembled steel-concrete composite structure based on BIM technology, BIM building three-dimensional digital modeling adopts a stress characteristic finite element analysis algorithm to carry out stress analysis on the assembled steel-concrete composite structure, BIM building three-dimensional digital modeling adopts a building vibration response prediction analysis mechanism to carry out vibration analysis on the assembled steel-concrete composite structure, BIM building three-dimensional digital modeling adopts a concrete temperature rise calculation algorithm to carry out thermal calculation analysis on the assembled steel-concrete composite structure, construction structure analysis model is realized, an Internet of things system carries out information transmission and cooperative work through a data sensing processing module, a communication module, a database module and a BIM system module, full life cycle management of the assembled steel-concrete composite structure is realized, a construction scheme comprises a foundation processing module, a steel structure manufacturing module, a concrete pouring module and a standardized member manufacturing module, and the assembled steel-concrete composite structure is a novel green construction mode, the development of the assembled steel-concrete composite structure is facilitated, meanwhile, construction environment pollution is small, the construction process is economic and quick, and energy conservation and environmental protection are facilitated.
Detailed Description
The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the disclosure. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1-5, the invention provides an application method of an assembled steel-concrete combined structure based on a BIM technology, which comprises the following steps:
firstly, modeling geometrical parameters and space coordination are carried out by adopting BIM building three-dimensional digital modeling, and a core mathematical model of an assembled steel-concrete combined structure typical project is established, wherein the core mathematical model at least comprises building outline building, building structure, water supply and drainage, space layout, door and window positions and sizes;
Carrying out stress analysis on the assembled steel-concrete combined structure by adopting a stress characteristic finite element analysis algorithm in the BIM building three-dimensional digital modeling, carrying out vibration analysis on the assembled steel-concrete combined structure by adopting a building vibration response prediction analysis mechanism in the BIM building three-dimensional digital modeling, carrying out thermal calculation analysis on the assembled steel-concrete combined structure by adopting a concrete temperature rise calculation algorithm in the BIM building three-dimensional digital modeling, and converting the established core mathematical model into a building structure analysis model;
Thirdly, carrying out information transmission and cooperative work by adopting an Internet of things system to realize the whole life cycle management of the fabricated steel-concrete combined structure, wherein the Internet of things system comprises a data sensing processing module, a communication module, a database module and a BIM system module;
In the third step, the output end of the data sensing processing module is connected with the input end of the communication module, the output end of the communication module is connected with the input end of the database module, and the output end of the database module is connected with the input end of the BIM system module;
Step four, a construction scheme of an assembled steel-concrete combined structure typical project is established according to a building structure analysis model and an Internet of things system, wherein the construction scheme comprises a foundation treatment module, a steel structure manufacturing module, a concrete pouring module and a standardized member manufacturing module;
in the fourth step, the output end of the foundation treatment module is connected with the input end of the steel structure manufacturing module, the output end of the steel structure manufacturing module is connected with the input end of the concrete pouring module, and the output end of the concrete pouring module is connected with the input end of the standardized component manufacturing module;
and fifthly, carrying out scheme previewing simulation according to a construction scheme of the assembled steel-concrete combined structure typical engineering, realizing a visual effect and physical effect display previewing simulation process through virtual reality simulation, checking that workers and equipment are in correct positions and states, and ensuring the safety of the ongoing operation.
In a specific embodiment, BIM building three-dimensional digital modeling is adopted to model building structure and space parameters, and a core mathematical model of an assembled steel-concrete combined structure typical project can be established, and the model mainly comprises the following aspects of 1. The building appearance building mainly comprises geometric parameter modeling of building facades, including parameters such as total length, total height, roof shape, angle and the like of the building, and simulation is carried out by combining design requirements of different materials. 2. The building structure mainly comprises geometric parameter modeling of an assembled steel-concrete combined structure, including parameters such as shape, size, position and the like of a steel structure beam column, parameters such as thickness, height, length and the like of a concrete member, connection modes and constraint conditions among different members and the like. 3. The water supply and drainage part mainly comprises geometric parameter modeling of a water supply and drainage system in a building, wherein the geometric parameter modeling comprises parameters such as a water pipe, a sewer, a section shape, materials and the like, a connection mode between different pipelines, the positions of the pipelines and the like. 4. The space layout comprises the space layout modeling of the interior of the building, including parameters such as the position, the size, the shape and the like of the room, the connection mode between different rooms, the door and window position and the like. 5. The position and the size of the door and the window mainly comprise modeling of the position and the size of the door and the window of the building outer vertical face and the inner space, and parameters such as the position, the size, the shape and the like of the door and the window can be specified according to the requirements of designers so as to achieve the optimal lighting and ventilation effects. In summary, modeling of these parameters can form a core mathematical model of a comprehensive assembled steel-concrete composite structure typical engineering, which can provide detailed building structure and spatial layout information for designers, engineers and constructors, and help them to perform design, construction and maintenance better.
By applying the virtual reality technology, scheme preview simulation can be performed according to a specific construction scheme of the assembled steel-concrete combined structure typical engineering, visual effect and physical effect display are achieved, whether workers and equipment are in correct positions and states or not is checked, and safety of ongoing operation is ensured. The method comprises the following steps of 1, constructing a virtual reality scene, namely constructing a corresponding virtual reality scene based on a BIM model of an assembled steel-concrete combined structure typical project. 2. And loading a construction scheme, namely introducing the construction scheme of the typical engineering of the fabricated steel-concrete combined structure into a virtual reality scene, wherein the construction scheme comprises operations required to be performed in the construction process, such as equipment installation, concrete pouring and the like. 3. Virtual reality simulation, namely simulating and previewing the construction process by using a virtual reality technology, and displaying simulation effects including physical effects and visual effects in real time. The position, state, size and the like of the objects in the scene can be adjusted as required to verify the rationality and safety of the construction scheme. 4. Checking the status of workers and equipment in the course of virtual reality simulation, it is possible to check whether workers and equipment are in the correct position and status to ensure the safety of ongoing operations. Parameters in the construction scheme can be adjusted to optimize construction efficiency and safety. In summary, the scheme preview simulation is performed by using the virtual reality technology, so that the rationality and safety of the construction scheme can be effectively verified, and important reference basis and guidance are provided for the construction of the typical engineering of the fabricated steel-concrete combined structure.
In a further embodiment, the working method of the stress characteristic finite element analysis algorithm is as follows:
s1, modeling an assembled steel-concrete combined structure into a continuous geometric unit by adopting grid subdivision, wherein the grid subdivision carries out finite element analysis on the type and the size of the unit through a three-dimensional space scalar field analysis engine to determine the type and the size of the continuous geometric unit;
S2, establishing a self-constructed model of the fabricated steel material by adopting numerical simulation, wherein the numerical simulation determines elastic mechanical properties of the fabricated steel material according to stress-strain curves, a stress characteristic finite element analysis algorithm applies boundary conditions of the self-constructed model by using a discrete smooth interpolation mechanism, the boundary conditions at least comprise supporting constraint, fixed constraint, sliding constraint, rotating constraint, plastic hinge constraint and external load, the discrete smooth interpolation mechanism determines the supporting constraint, the fixed constraint and the rotating constraint according to fixed point positions of the self-constructed model, the discrete smooth interpolation mechanism sets sliding constraint of the self-constructed model by using sliding nodes and sliding planes, the discrete smooth interpolation mechanism determines plastic hinge constraint according to plastic nodes of the self-constructed model, and the discrete smooth interpolation mechanism applies node load, plane load or line load of the self-constructed model by using triangular grid reconstruction to simulate and calculate external load, wherein the calculation formula of the external load is as follows:
in the formula (1), Y is the external load of the constitutive model, f is the load capacity inside the constitutive model, T is the external load action period of the constitutive model, x is the material elastic modulus of the constitutive model, and f is the material yield limit of the constitutive model;
s3, determining displacement, stress, linear strain and deformation frequency of the assembled steel-concrete combined structure by adopting a pushing type stress analysis mechanism, wherein the pushing type stress analysis mechanism establishes a stress mathematical equation according to a continuous geometric unit and a constitutive model, the stress mathematical equation calculates the stress and displacement coordinated with each other by the combined structure through an interface coordination function, the stress mathematical equation performs finite element analysis according to stress characteristics of the steel pipe and the concrete to calculate the linear strain and deformation frequency, and the stress calculation formula is as follows:
In the formula (2), V is the stress of the assembled steel-concrete composite structure, z is the elastic modulus of the assembled steel-concrete composite structure, u is the cross-sectional area of the assembled steel-concrete composite structure, and beta is the front end bearing capacity of the assembled steel-concrete composite structure;
The displacement calculation formula is as follows:
In the formula (3), Q is the displacement of the assembled steel-concrete composite structure, c is the elastic deformation of the assembled steel-concrete composite structure, b is the plastic deformation modulus of the assembled steel-concrete composite structure, θ is the interface deformation contact area of the interface coordination function, and h is the temperature deformation modulus of the assembled steel-concrete composite structure;
The linear strain calculation formula is as follows:
In the formula (4), R is the linear strain of the fabricated steel-concrete composite structure, y is the elastic modulus of the fabricated steel, m is the elastic modulus of the concrete material, Q is the Poisson's ratio of the fabricated steel to the concrete, and p is the cross-sectional area of the fabricated steel-concrete composite structure;
The deformation frequency calculation formula is as follows:
In the formula (5), F is the deformation frequency of the fabricated steel-concrete composite structure, S is the thickness of the fabricated steel-concrete composite structure, q is the density of concrete, l is the length of fabricated steel,Is the compressive strength of the concrete.
In a specific embodiment, the following steps may be employed to construct an application platform for a stress feature finite element analysis algorithm:
1. determining application scenes and targets, namely determining scenes and targets needing to be subjected to finite element analysis of stress characteristics according to specific building structure design and construction requirements.
2. And selecting finite element analysis software and a hardware platform, namely selecting proper finite element analysis software and a computing hardware platform, such as ANSYS, ABAQUS, COMSOLMultiphysics and the like according to actual requirements.
3. And establishing a finite element analysis model, namely establishing a finite element analysis model of the building structure according to the scene and the target, wherein the finite element analysis model comprises the geometric shape, the material characteristics, the boundary conditions and the like of the building structure.
4. And performing simulation calculation, namely performing simulation calculation by utilizing finite element analysis software according to the model to obtain stress characteristics such as stress, deformation and damage states of the building structure under different stress conditions.
5. Analyzing the simulation calculation result, determining the problems of concentrated stress, overhigh stress and the like in the building structure, and providing optimization suggestions and design improvement schemes.
In the specific implementation, a hardware platform can be built, such as a high-performance server, a multi-core processor, a GPU accelerator and the like, so that the accelerated calculation and parallel processing are realized, and the analysis efficiency and the analysis precision are improved. Meanwhile, cloud computing and artificial intelligence technology can be introduced, and the design and construction of a building structure are optimized by using methods such as big data and machine learning, so that the building quality and the environmental safety are further improved. In summary, the application platform for constructing the stress characteristic finite element analysis algorithm can provide reliable technical support and decision basis for building structure design, construction and operation and maintenance.
The principle of the stress characteristic finite element analysis algorithm is based on a finite element analysis method, and stress characteristics such as stress, deformation, damage state and the like of the material under different stress conditions are obtained through computer simulation by establishing a constitutive model of the fabricated steel material and applying boundary conditions. Specifically, the algorithm establishes a constitutive model of the elastic mechanical property of the fabricated steel material based on a stress-strain curve of the fabricated steel material, and establishes a finite element model according to the actual building structure and parameters of the fabricated steel material, including grid division, material characteristics, boundary conditions and the like. The discrete smooth interpolation mechanism is used for applying various constraints and loads of the constitutive model, including supporting constraints, fixed constraints, sliding constraints, rotation constraints, plastic hinge constraints and external loads, and stress characteristics such as stress, deformation, damage states and the like of the building structure under different stress conditions are obtained through simulation calculation. These features can provide reference for the design and optimization of the related art. The finite element analysis algorithm of the stress characteristics has the function of researching the mechanical characteristics of the assembled steel structure under different stress conditions, including stress, strain data, deformation states and the like, and providing a reference basis for designing and optimizing the assembled steel structure. Meanwhile, the algorithm can be used for researching mechanical properties of other materials, and provides technical support for design and research in related fields. The statistics of the external load calculation result are shown in table 1:
As shown in table 1, four test groups are set, output voltage signals are calculated by two methods, the method 1 carries out cross correlation operation on clock signals and ideal clock signals for a cross correlation method, the maximum correlation peak value between the clock signals and the ideal clock signals is found, then an external load is determined, the method 2 adopts a discrete smooth interpolation mechanism to simulate and calculate the external load through node load, surface load or line load of the reconstruction model by triangular grid reconstruction, the error of the method 1 is larger than that of the method 2, and the discrete smooth interpolation mechanism has outstanding technical effects through node load, surface load or line load simulation and calculation of the reconstruction model by the triangular grid reconstruction.
In a further embodiment, the building vibration response prediction analysis mechanism adopts an inverse analysis input serial port to input the elastic modulus of the steel pipe, the density of the concrete and the strain of the steel bar into a core mathematical model of the typical engineering of the assembled steel-concrete combined structure, the building vibration response prediction analysis mechanism further adopts an inverse analysis power function engine to determine the acting direction and the stress when the assembled steel-concrete combined structure is subjected to external force, the inverse analysis power function engine simulates the dynamic response of materials in the assembled steel-concrete combined structure through a power function numerical simulation mechanism to obtain the stress characteristic, the building vibration response prediction analysis mechanism finally adopts an amplitude vibration equation to solve the discretized core mathematical model to obtain a vibration change curve when the assembled steel-concrete combined structure is subjected to external force, and the amplitude vibration equation synthesizes and analyzes the vibration response according to the stress characteristic to obtain the vibration change curve of the assembled steel-concrete combined structure.
In a further embodiment, the working method of the concrete temperature rise calculation algorithm is as follows:
S1, establishing a heat flow model of an assembled steel-concrete composite structure by adopting a hydrodynamic three-dimensional modeling, wherein the hydrodynamic three-dimensional modeling determines heat source, heat radiation and heat convection heat flow field distribution rules according to the geometric shape, material characteristics and external environmental condition factors of the steel-concrete composite structure, and establishes the heat flow model;
s2, a thermal stress model of the structure is built by adopting a concrete thermal stress mechanism, and the concrete thermal stress mechanism analyzes a temperature deformation and thermal stress distribution rule according to the deformation and stress distribution of the assembled steel-concrete composite structure material under the thermal load;
and S3, finally, converting the established heat flow model and thermal stress model into a building structure analysis model by adopting a combined weighting conversion engine, and carrying out thermal coupling analysis, wherein the combined weighting conversion engine carries out coupling analysis on a temperature field and a stress field through a thermal coupling mechanism to obtain the variation trend of the structure temperature and stress, the thermal coupling mechanism analyzes the temperature field distribution through an explicit coupling function, the thermal coupling mechanism analyzes the stress field distribution through an implicit coupling function, and finally, the thermal coupling mechanism strengthens the coupling relation between the temperature field and the stress field through semi-implicit coupling iteration to realize thermal coupling analysis after convergence.
In a further embodiment, the data sensing processing module detects and records parameter data inside and outside a building by adopting a sensor array, the parameter data at least comprises concrete strength, section size, weight, bearing capacity, connection strength and welding position, the data sensing processing module carries out smoothing processing on the parameter data acquired by the sensor array by adopting a smoothing difference algorithm to obtain smooth and continuous parameter data, the smoothing difference algorithm carries out high-order polynomial regression on the parameter data in a sliding interval by adopting a local weighting polynomial to obtain derivatives of regression functions, the smoothing difference algorithm obtains parameter data of different order derivatives according to the derivatives of the regression functions to realize parameter data smoothing processing, the communication module adopts a wireless Mesh ad hoc network backhaul network to communicate with the sensor array, the parameter data is transmitted to a database module and a BIM system module, the wireless Mesh ad hoc network backhaul network establishes a communication network with the database module and the BIM system module through a wireless backhaul protocol, the wireless Mesh ad hoc network backhaul network summarizes the parameter data of different nodes through a network joint point, and the wireless Mesh ad hoc network transmits the parameter data to the database module or the BIM system module according to the gateway.
In a specific embodiment, the construction vibration response prediction analysis mechanism is used for inputting the elastic modulus of the steel pipe, the density of the concrete and the strain of the steel bar into a core mathematical model, simulating the stress characteristic of the assembled steel-concrete composite structure when the assembled steel-concrete composite structure is subjected to external force, and solving by using an amplitude vibration equation to obtain a vibration change curve of the assembled steel-concrete composite structure. Specifically, the mechanism adopts an inverse analysis input serial port to input material properties in the assembled steel-concrete composite structure into a core mathematical model. And then determining the stress direction and acting force by using an inverse analysis power function engine, and simulating the dynamic response of materials in the assembled steel-concrete composite structure by using a power function numerical simulation mechanism to obtain the stress characteristic. And finally, solving a discretized core mathematical model by using an amplitude vibration equation to obtain a vibration change curve of the assembled steel-concrete composite structure under the action of external force. The amplitude-variable vibration equation synthesizes and analyzes the vibration response according to the stress characteristic, so as to obtain the vibration change curve of the assembled steel-concrete composite structure.
The concrete temperature rise calculation algorithm comprises the following steps of firstly, establishing a heat flow model of an assembled steel-concrete combined structure by adopting a three-dimensional modeling method. The model considers the geometric shape, material characteristics and external environment factors of the combined structure, determines the distribution rule of a heat source, heat radiation and a heat convection heat flow field, divides the combined structure into discrete control bodies for discretization analysis, and obtains the temperature distribution of each point. And secondly, adopting a concrete thermal stress mechanism to establish a thermal stress model of the fabricated steel-concrete combined structure. The mechanism considers the deformation and stress distribution conditions of the composite structural material under the heat load, and analyzes the distribution rules of temperature deformation and heat stress. And finally, converting the heat flow model and the thermal stress model into a building structure analysis model by adopting a combined weighting conversion engine, and carrying out thermal coupling analysis. The engine considers the coupling relation between the temperature field and the stress field, analyzes the distribution condition of the temperature field and the stress field respectively through an explicit coupling function and an implicit coupling function, and strengthens the coupling relation between the temperature field and the stress field through a semi-implicit coupling iteration method until convergence is achieved, so that the temperature and stress variation trend of the assembled steel-concrete composite structure is obtained.
The data sensing processing module adopts a sensor array to detect and record parameter data of the interior and the exterior of the building, and the parameter data at least comprises concrete strength, section size, weight, bearing capacity, connection strength, welding position and the like. And smoothing the acquired parameter data by adopting a smoothing difference algorithm to obtain continuous and smooth parameter data. Specifically, the smoothing difference algorithm adopts a local weighting polynomial to carry out high-order polynomial regression to obtain the derivative of the regression function, and parameter data of different order derivatives are obtained according to the derivative, so that smoothing processing of the parameter data is realized. The communication module adopts a wireless Mesh ad hoc network backhaul network to communicate with the sensor array so as to transmit parameter data. The wireless Mesh ad hoc network backhaul network establishes a communication network with the database module and the BIM system module through a wireless backhaul protocol, summarizes parameter data of different nodes through a network node, and transmits the summarized parameter data to the database module or the BIM system module according to the communication network. In this way, data transmission and linkage between the sensor array and the database and BIM system is achieved.
In a further embodiment, the database module uses a cloud data repository to safely store parameter data, the cloud data repository uses a heat replacement mechanism to optimize a buffer replacement process, the heat replacement mechanism independently extracts a standard sequence of the parameter data through a network data packet capturing protocol to complete the design of a hierarchical storage mode of the parameter data, the cloud data repository uses a backup disaster recovery engine to backup the parameter data, the backup disaster recovery engine uses a copy storage protocol to store the backup parameter data in a different place, the backup disaster recovery engine uses a data mirror fault tolerance process to completely recover the deleted parameter data, the BIM system module uses a digital operation management to realize the management of the whole life cycle of an assembled steel-concrete combined structure, the digital operation management uses a strapdown inertial group configuration mechanism to establish the corresponding relation between a building structure analysis model and the parameter data, the inertial group configuration mechanism loads the parameter data into the building structure analysis model through a dynamic loading protocol to realize the corresponding relation between a sensor and the building structure analysis model, and the digital operation management uses a digital operation management to realize the complete restoration of the deleted parameter data by adopting a data mirror fault tolerance process, and the BIM system module uses a collaborative operation management to realize the management and a virtual operation resource sharing and a virtual construction resource optimization process before 3 is produced and a production resource is optimized.
In a further embodiment, the foundation processing module adopts sonic detection to determine the foundation bearing capacity, the sonic detection adopts a sonic detector to emit sonic waves to underground, the sonic detector adopts an asynchronous timestamp to record the propagation time of shear waves received by two reflectors to determine the shear wave speed of a rock and soil layer, the sonic detection determines the foundation bearing capacity through the shear wave speed and the soil density, the foundation processing module adopts a region with a pile foundation reinforcement load of 300kN/m2-600kN/m2, the foundation processing module adopts an anchor rod reinforcement or pit excavation widening reinforcement load of 0kN/m2-300kN/m2, the steel structure manufacturing module adopts a numerical control processing device to conduct cutting, shaping and punching preprocessing of steel materials to ensure the accuracy and the standardization degree of steel members, the numerical control processing device adopts a source load cooperative frequency control engine to generate processing control instructions, the source load cooperative frequency control engine outputs the processing control instructions according to a building structure analysis model and an Internet of things system, the numerical control drilling machine is used for cutting, shaping and punching preprocessing of steel materials, the steel structure manufacturing module adopts a carbon fiber reinforcement plate to conduct reinforcement, and the steel structure manufacturing module adopts a steel beam and steel beam welding equipment is firmly connected with a steel column through the steel structure manufacturing module.
In a further embodiment, the concrete pouring module adopts servo supporting equipment to set up and support a template, the servo supporting equipment adopts ANSYS finite element simulation to carry out supporting force numerical simulation calculation on concrete, a supporting point of a concrete structure is found, concrete pouring accuracy and building quality are guaranteed, the concrete pouring module adopts a genetic proportioning algorithm to carry out proportioning design on the concrete, strength, compactness and durability of the concrete are guaranteed, the genetic proportioning algorithm automatically adjusts the proportion of each material in the concrete proportioning through a genetic fitness function, the concrete pouring module finally adopts a self-propelled vibrator to carry out pouring, vibrating and maintenance on the concrete, uniformity and stability of the concrete are guaranteed, the standardized component manufacturing module adopts an assembled building intelligent manufacturing to carry out design and manufacturing on the standardized component, accuracy and standardization degree of the component are guaranteed, the assembled building intelligent manufacturing carries out visual design and three-dimensional simulation on the standardized component according to a building structure analysis model, the assembled intelligent manufacturing carries out fine control on component materials, size and performance, and full-scale manufacturing of the prefabricated component are guaranteed through a 3D intelligent manufacturing module, and the prefabricated component is manufactured through a full-scale control model, and the life-cycle is guaranteed.
In a specific embodiment, the database module adopts a cloud data repository to safely store the parameter data, and adopts a hot replacement mechanism to optimize the cache replacement process. The heat replacement mechanism independently extracts a standard sequence of the parameter data through a network data packet capturing protocol, so that the design of a parameter data hierarchical storage mode is completed, and the hierarchical storage of the parameter data is realized. In addition, the database module adopts a backup disaster recovery engine to backup the parameter data, and adopts data mirroring fault tolerance processing to completely recover the deleted parameter data, thereby ensuring the safety and reliability of the parameter data. The BIM system module adopts digital operation management to realize the management of the whole life cycle of the fabricated steel-concrete combined structure. Specifically, a strapdown inertial measurement unit configuration mechanism is adopted to establish the corresponding relation between the building structure analysis model and the parameter data, and the parameter data is loaded into the building structure analysis model through a dynamic loading protocol, so that the corresponding relation between the sensor and the building structure analysis model is established. Meanwhile, the BIM collaborative production management mechanism is adopted to assist in optimizing the construction flow, virtual reality simulation is carried out before construction through the 3D modeling engine, and optimization of production and construction resources and resource sharing are achieved. Through the application of digital operation management and BIM system modules, the full life cycle management and optimization of the fabricated steel-concrete combined structure are realized.
The foundation processing module adopts sound wave detection to determine the bearing capacity of the foundation, transmits sound waves to the underground through the sound wave detector, and records the propagation time of the shear waves received by the two reflectors by utilizing the asynchronous time stamp, thereby determining the shear wave speed of the rock and soil layer. And determining the bearing capacity of the foundation by the shear wave speed and the soil density, and adopting different reinforcement modes under different load requirements, including pile foundation reinforcement and anchor rod reinforcement or pit widening reinforcement. Thus, the safety problem caused by unstable foundation is effectively solved. The steel structure manufacturing module adopts a numerical control processing device to cut, shape and punch steel materials, and ensures the accuracy and the standardization degree of steel components. The numerical control machining device generates machining control instructions by adopting a source-load cooperative frequency control engine, and outputs the machining control instructions according to a building structure analysis model and an Internet of things system to cut, shape and punch steel materials. And the steel structure manufacturing module is used for reinforcing the steel beam by adopting a carbon fiber reinforcing plate, and assembling and welding the steel beam and the steel column through a hoisting machine and welding equipment, so that firm and reliable connection between different components is ensured, and a high-quality and high-safety building structure is achieved. In summary, the application of the foundation treatment module and the steel structure manufacturing module can effectively improve the bearing capacity and stability of the building structure and ensure the safety and stability of the building structure under different stress requirements.
The concrete pouring module adopts servo supporting equipment to set up and support the template, and on the basis, ANSYS finite element simulation is adopted to carry out numerical simulation calculation on the supporting force of the concrete, so that the supporting point of the concrete structure is found out, and the accuracy and the building quality are ensured. The genetic proportioning algorithm is adopted to carry out proportioning design of the concrete, so that the strength, compactness and durability of the concrete are ensured, and the proportion of each material in the proportion is automatically adjusted. And the self-propelled vibrator is used for pouring, vibrating and maintaining the concrete, so that the uniformity and stability of the concrete are ensured. The standardized component manufacturing module adopts intelligent manufacturing of an assembled building to design and manufacture standardized components, and performs visual design and three-dimensional simulation on the standardized components according to a building structure analysis model to perform fine control on component materials, sizes and performances. The materials, the sizes and the types of each standardized component are visually displayed through a 3D digital model, and then the materials, the sizes and the performances of the standardized components are subjected to fine design and control through full life cycle intelligent manufacturing, so that the accuracy and the standardization degree of the components are ensured. And the prefabricated plates are adopted for preprocessing and assembling the standardized components, so that firm and reliable connection between the components is ensured. In summary, the application of the concrete pouring module and the standardized component manufacturing module can effectively improve the construction efficiency and the building quality, ensure the stability and the durability of the building structure and realize the aims of intelligent building manufacturing and high-quality building.
While specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these specific embodiments are by way of example only, and that various omissions, substitutions, and changes in the form and details of the methods and systems described above may be made by those skilled in the art without departing from the spirit and scope of the invention. For example, it is within the scope of the present invention to combine the above-described method steps to perform substantially the same function in substantially the same way to achieve substantially the same result. Accordingly, the scope of the invention is limited only by the following claims.