CN108256213B - Urban rail transit vehicle base modular construction simulation method based on VR and BIM - Google Patents

Abstract

The invention discloses a modular construction simulation method for an urban rail transit vehicle base based on VR and BIM, which comprises the following steps: firstly, establishing a modular database, 101, establishing a modular environment database, 102, establishing a modular base material database, 103, establishing a modular assembly material database, 104 and establishing a modular construction machine database; secondly, constructing a three-dimensional construction scene model; and thirdly, selecting a modular construction simulation mode of the urban rail transit vehicle base and carrying out modular simulation construction on the urban rail transit vehicle base. According to the method, the optimal construction process and the engineering progress are determined, so that the construction scheme of the urban rail transit vehicle base project is determined, the dynamic simulation is carried out on the construction process, a clear and visual learning mode is provided for constructors, the constructors can find out the deviation between the construction process understood by the constructors and the optimal construction process, the construction scheme is adjusted in time, and the construction progress of the vehicle base is effectively guaranteed.

Description

Urban rail transit vehicle base modular construction simulation method based on VR and BIM

Technical Field

The invention belongs to the technical field of modular construction simulation, and particularly relates to a modular construction simulation method for an urban rail transit vehicle base based on VR and BIM.

Background

The urban rail transit vehicle base is a place for maintenance and repair of subway vehicles and is an important guarantee for subway network operation safety. Good engineering construction quality is the premise of guaranteeing the urban rail transit vehicle base to be put into use, and the direct factor for determining the good and bad engineering construction quality is the construction process. Because urban rail transit construction procedures are various and technological processes are complex, only relevant theoretical knowledge and past experience are calculated according to the existing construction organization approximate calculation, a construction schedule compiled by designers cannot accurately guide the construction process, the problems of construction period delay and the like often occur, and the project progress and quality are seriously influenced; when constructors construct according to the construction files, only the construction process can be generally planned, visual knowledge of a construction scene cannot be formed, the problems in the construction process cannot be found in time, waste of people, materials and properties is caused, and the engineering construction cost of the urban rail transit vehicle base is greatly increased; newly-entered constructors can enter the field after being qualified after systematic theoretical knowledge training, and for the constructors, the actual operation experience on the field is lack, so that the learning method which is clear, visual and visual for the construction process of each subsection project is very important.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a VR and BIM-based urban rail transit vehicle base modular construction simulation method, determine the optimal construction process and the project progress, further determine the construction scheme of the project of the urban rail transit vehicle base, dynamically simulate the construction process, provide a clear and intuitive learning mode for constructors, help the constructors to find the deviation between the construction process understood by the constructors and the optimal construction process, adjust the construction scheme in time, effectively ensure the construction progress of the vehicle base, and facilitate popularization and use.

In order to solve the technical problems, the invention adopts the technical scheme that: an urban rail transit vehicle base modular construction simulation method based on VR and BIM is characterized by comprising the following steps:

step one, establishing a modular database, wherein the process is as follows:

step 101, establishing a modular environment database: constructing a modular environment database of the environment of an urban rail transit vehicle base by using a BIM platform in a mode of exploring and inquiring a local hydrological data manual on site, wherein the modular environment database consists of a natural environment model and a geological environment model, the natural environment model comprises terrain, landform, hydrological conditions and climatic conditions, and the geological environment model comprises a soil body structure and soil texture;

102, establishing a modular basic material database: according to the design requirements and the design results of the project of the urban rail transit vehicle base, constructing a modular base material database used in the project construction of different urban rail transit vehicle bases by using the project of the urban rail transit vehicle base as a unit by using a BIM platform, wherein the modular base material database comprises basic raw materials;

the urban rail transit vehicle base project comprises a station roadbed project, a building monomer project, an outdoor comprehensive pipeline project, a station track project, an auxiliary building and an outdoor environment project;

the station subgrade project comprises foundation treatment construction, embankment treatment construction, foundation bed treatment construction and cutting treatment construction which are sequentially treated;

the single building construction project comprises foundation construction, building main structure construction, building decoration construction, roof construction, building water supply and drainage heating construction, building electrical construction, ventilation air conditioning construction and elevator construction which are sequentially processed;

the outdoor comprehensive pipeline engineering comprises water supply pipeline construction, drainage pipeline construction, cable tunnel construction, cable trench construction, cable groove construction, compressed air pipeline construction and outdoor electrical construction which are sequentially processed;

the station track engineering comprises integral ballast bed track construction and common track construction which are sequentially processed;

the auxiliary building and outdoor environment engineering comprises roadbed construction, pavement construction, auxiliary building construction, auxiliary square construction and auxiliary sidewalk construction which are sequentially processed;

103, establishing a modular assembly material database: according to the design requirements and the design results of the urban rail transit vehicle base project, a BIM platform is utilized, the urban rail transit vehicle base project is taken as a unit to construct modular assembly material databases used in the construction of different urban rail transit vehicle base projects, and the modular assembly material databases comprise prefabricated modules used for carrying out module assembly during the construction of the urban rail transit vehicle base project;

step 104, establishing a modular construction machine database: according to the design requirements and the design results of the urban rail transit vehicle base project, a BIM platform is utilized, and the urban rail transit vehicle base project is taken as a unit to construct a modular construction machine database used in construction of different urban rail transit vehicle base projects, wherein the modular construction machine database comprises machines, instruments and tools;

step two, constructing a three-dimensional construction scene model: firstly, designing virtual constructors for different urban rail transit vehicle base project projects by utilizing a BIM platform; then, on the basis of a modular database, constructing a three-dimensional construction scene model according to the optimal construction flow and the engineering progress of the project of different urban rail transit vehicle base sub-projects based on a time line, wherein the three-dimensional construction scene model comprises a three-dimensional construction scene roaming model for constructor learning and a three-dimensional construction scene dynamic simulation model for constructor training exercise;

the construction process of the three-dimensional construction scene roaming model is as follows: modeling and optimizing an optimal construction process corresponding to the project of the urban rail transit vehicle base and a modular database used in the project progress through a BIM platform, combining dynamic construction of virtual constructors, importing the optimal construction process and the modular database into virtual reality equipment, classifying the used modular databases according to the sequence of the optimal construction process and the project progress corresponding to the project of the urban rail transit vehicle base, dynamically playing by a computer based on a timeline, refreshing a three-dimensional construction scene interface in real time, and completing dynamic simulation of a three-dimensional construction scene roaming model;

the three-dimensional construction scene dynamic simulation model construction process comprises the following steps: importing the optimal construction process corresponding to the project of the urban rail transit vehicle base and the modular database used in the project progress into virtual reality equipment, classifying the used modular databases according to the sequence of the optimal construction process corresponding to the project of the urban rail transit vehicle base and the project progress, and calling the used modular databases by using the virtual reality equipment through construction personnel to realize the dynamic simulation of the urban rail transit vehicle base project by the virtual construction personnel;

the virtual reality equipment comprises VR glasses and a VR handle;

step three, selecting a modular construction simulation mode of the urban rail transit vehicle base and carrying out modular simulation construction on the urban rail transit vehicle base: the constructor selects a constructor learning mode or a constructor practical training and practicing mode through a computer according to actual requirements;

when a constructor selects a constructor learning mode, the constructor wears VR glasses and holds a VR handle to select an urban rail transit vehicle base project, browses and experiences a three-dimensional construction scene roaming model corresponding to the selected urban rail transit vehicle base project, and a computer controls a display to dynamically play a construction picture of the three-dimensional construction scene roaming model based on a timeline;

when a constructor selects a constructor training exercise mode, the constructor wears VR glasses, holds a VR handle, selects an urban rail transit vehicle base project, utilizes the VR handle to carry out construction process simulation on a three-dimensional construction scene dynamic simulation model corresponding to the selected urban rail transit vehicle base project, and prompts wrong operation by a computer if the constructor uses the VR handle to control a virtual constructor to call a modular database sequence which is not in accordance with the optimal construction process corresponding to the urban rail transit vehicle base project and the sequence of the engineering progress, and the virtual constructor cannot call a wrong modular database; and if the construction personnel use the VR handle to control the virtual construction personnel to call the modular database in a sequence which is consistent with the sequence of the optimal construction flow and the engineering progress corresponding to the urban rail transit vehicle base project, the virtual construction personnel call the used modular database smoothly, so that the dynamic simulation of the urban rail transit vehicle base project by the virtual construction personnel is realized, and the dynamic simulation is displayed by a display.

The urban rail transit vehicle base modular construction simulation method based on VR and BIM is characterized in that: basic raw materials corresponding to the modular base material database of the station subgrade project comprise earthwork, reinforcing steel bars and concrete; the basic raw materials corresponding to the modular base material database of the station track engineering comprise steel rails, broken stones, concrete, turnouts, fasteners, signal signs and warning signs; the basic raw materials corresponding to the modular base material database of the auxiliary building and the outdoor environmental engineering comprise earthwork, broken stone, kerb, reinforcing steel bars, concrete, metal wires, cables, cable bridges, lamps, grounding devices, pipelines, sanitary wares, air pipes and fans.

The urban rail transit vehicle base modular construction simulation method based on VR and BIM is characterized in that: the prefabricated modules corresponding to the modular assembly material database of the single building construction project comprise prefabricated wall modules, prefabricated floor modules, prefabricated roof modules and prefabricated support modules; the prefabricated modules corresponding to the modular assembly material database of the outdoor comprehensive pipeline project comprise prefabricated pipe section modules and prefabricated pipeline system modules.

The urban rail transit vehicle base modular construction simulation method based on VR and BIM is characterized in that: the machine comprises a transportation machine, a hoisting machine, a module assembling machine and a lifting machine, and the instrument comprises a signal detection instrument.

Compared with the prior art, the invention has the following advantages:

1. the method collects the environmental information of the construction process of each modularized subentry project of the urban rail transit vehicle base, collects basic raw materials, prefabricated modules and machines composed of the basic raw materials used in the construction process of each modularized subentry project of the urban rail transit vehicle base, adopts a BIM platform to construct a three-dimensional construction scene model, utilizes virtual reality equipment to carry out omnibearing immersion simulation on the modularized construction process in a virtual reality scene, and is convenient to popularize and use.

2. The three-dimensional construction scene model comprises a three-dimensional construction scene roaming model and a three-dimensional construction scene dynamic simulation model, the optimal construction process and the engineering progress of the urban rail transit vehicle base project based on the time line are utilized, the three-dimensional construction scene roaming model meets the clear and visual learning requirement of a constructor in the construction process, and the three-dimensional construction scene dynamic simulation model meets the requirement of practical training and practicing of the constructor in the construction process, so that the three-dimensional construction scene roaming model is complete in function and good in using effect.

3. The method has simple steps and convenient and fast operation, is beneficial to constructors to find the deviation between the construction process understood by the constructors and the optimal construction process, timely adjusts the construction scheme, effectively ensures the construction progress of the vehicle base, realizes the optimal distribution of people, machines, materials, methods and rings, effectively ensures the construction progress of the vehicle base, and is convenient for popularization and use.

In conclusion, the construction method and the construction system of the urban rail transit vehicle base project determine the optimal construction process and the project progress, further determine the construction scheme of the urban rail transit vehicle base project, dynamically simulate the construction process, provide a clear and intuitive learning mode for constructors, help the constructors to find the deviation between the construction process understood by the constructors and the optimal construction process, adjust the construction scheme in time, effectively guarantee the construction progress of the vehicle base, and are convenient to popularize and use.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a block diagram of a method flow of a modular construction simulation method of the present invention.

Detailed Description

As shown in fig. 1, the method for simulating modular construction of an urban rail transit vehicle base based on VR and BIM of the invention comprises the following steps:

step one, establishing a modular database, wherein the process is as follows:

step 101, establishing a modular environment database: constructing a modular environment database of the environment of an urban rail transit vehicle base by using a BIM platform in a mode of exploring and inquiring a local hydrological data manual on site, wherein the modular environment database consists of a natural environment model and a geological environment model, the natural environment model comprises terrain, landform, hydrological conditions and climatic conditions, and the geological environment model comprises a soil body structure and soil texture;

it should be noted that the purpose of establishing the modular environment database is to consider actual environment factors, combine the geographic environment of the target area, establish a construction flow in accordance with the field, and reduce construction errors.

102, establishing a modular basic material database: according to the design requirements and the design results of the project of the urban rail transit vehicle base, constructing a modular base material database used in the project construction of different urban rail transit vehicle bases by using the project of the urban rail transit vehicle base as a unit by using a BIM platform, wherein the modular base material database comprises basic raw materials;

the urban rail transit vehicle base project comprises a station roadbed project, a building monomer project, an outdoor comprehensive pipeline project, a station track project, an auxiliary building and an outdoor environment project;

the station subgrade project comprises foundation treatment construction, embankment treatment construction, foundation bed treatment construction and cutting treatment construction which are sequentially treated;

the single building construction project comprises foundation construction, building main structure construction, building decoration construction, roof construction, building water supply and drainage heating construction, building electrical construction, ventilation air conditioning construction and elevator construction which are sequentially processed;

the outdoor comprehensive pipeline engineering comprises water supply pipeline construction, drainage pipeline construction, cable tunnel construction, cable trench construction, cable groove construction, compressed air pipeline construction and outdoor electrical construction which are sequentially processed;

the station track engineering comprises integral ballast bed track construction and common track construction which are sequentially processed;

the auxiliary building and outdoor environment engineering comprises roadbed construction, pavement construction, auxiliary building construction, auxiliary square construction and auxiliary sidewalk construction which are sequentially processed;

in this embodiment, the basic raw materials corresponding to the modular foundation material database of the yard subgrade project include earthwork, steel bars and concrete; the basic raw materials corresponding to the modular base material database of the station track engineering comprise steel rails, broken stones, concrete, turnouts, fasteners, signal signs and warning signs; the basic raw materials corresponding to the modular base material database of the auxiliary building and the outdoor environmental engineering comprise earthwork, broken stone, kerb, reinforcing steel bars, concrete, metal wires, cables, cable bridges, lamps, grounding devices, pipelines, sanitary wares, air pipes and fans.

In this embodiment, the basic raw materials further include electricity for construction and water for construction.

103, establishing a modular assembly material database: according to the design requirements and the design results of the urban rail transit vehicle base project, a BIM platform is utilized, the urban rail transit vehicle base project is taken as a unit to construct modular assembly material databases used in the construction of different urban rail transit vehicle base projects, and the modular assembly material databases comprise prefabricated modules used for carrying out module assembly during the construction of the urban rail transit vehicle base project;

in this embodiment, the prefabricated modules corresponding to the modular assembly material database of the single building construction project include prefabricated wall modules, prefabricated floor modules, prefabricated roof modules and prefabricated support modules; the prefabricated modules corresponding to the modular assembly material database of the outdoor comprehensive pipeline project comprise prefabricated pipe section modules and prefabricated pipeline system modules.

Step 104, establishing a modular construction machine database: according to the design requirements and the design results of the urban rail transit vehicle base project, a BIM platform is utilized, and the urban rail transit vehicle base project is taken as a unit to construct a modular construction machine database used in construction of different urban rail transit vehicle base projects, wherein the modular construction machine database comprises machines, instruments and tools;

in this embodiment, the machine includes a transport machine, a hoisting machine, a module assembling machine, and a lifting machine, and the apparatus includes a signal detection apparatus.

Step two, constructing a three-dimensional construction scene model: firstly, designing virtual constructors for different urban rail transit vehicle base project projects by utilizing a BIM platform; then, on the basis of a modular database, constructing a three-dimensional construction scene model according to the optimal construction flow and the engineering progress of the project of different urban rail transit vehicle base sub-projects based on a time line, wherein the three-dimensional construction scene model comprises a three-dimensional construction scene roaming model for constructor learning and a three-dimensional construction scene dynamic simulation model for constructor training exercise;

the construction process of the three-dimensional construction scene roaming model is as follows: modeling and optimizing an optimal construction process corresponding to the project of the urban rail transit vehicle base and a modular database used in the project progress through a BIM platform, combining dynamic construction of virtual constructors, importing the optimal construction process and the modular database into virtual reality equipment, classifying the used modular databases according to the sequence of the optimal construction process and the project progress corresponding to the project of the urban rail transit vehicle base, dynamically playing by a computer based on a timeline, refreshing a three-dimensional construction scene interface in real time, and completing dynamic simulation of a three-dimensional construction scene roaming model;

the three-dimensional construction scene dynamic simulation model construction process comprises the following steps: importing the optimal construction process corresponding to the project of the urban rail transit vehicle base and the modular database used in the project progress into virtual reality equipment, classifying the used modular databases according to the sequence of the optimal construction process corresponding to the project of the urban rail transit vehicle base and the project progress, and calling the used modular databases by using the virtual reality equipment through construction personnel to realize the dynamic simulation of the urban rail transit vehicle base project by the virtual construction personnel;

the virtual reality equipment comprises VR glasses and a VR handle;

the method includes the steps of collecting environmental information of construction processes of modularized subentries of the urban rail transit vehicle base, collecting basic raw materials used in the construction processes of the modularized subentries of the urban rail transit vehicle base, prefabricated modules and machines and tools formed by the basic raw materials, constructing a three-dimensional construction scene model by adopting a BIM platform, and performing omnibearing immersion simulation on the modularized construction process in a virtual reality scene by utilizing virtual reality equipment.

In actual use, the VR glasses guide constructors to enter a virtual construction scene, so that the constructors can feel the construction process in a virtual reality environment personally on the spot, the visual distance and the interpupillary distance of the VR glasses can be adjusted, the better viewing experience is provided for the constructors by adjusting the visual distance and the interpupillary distance, and the fatigue and dizziness caused by wearing the VR glasses for a long time can be reduced; the VR handle can adjust roaming position and visual angle of constructors in a virtual reality scene in real time, and the omnibearing immersion simulation modularization construction process is realized.

Step three, selecting a modular construction simulation mode of the urban rail transit vehicle base and carrying out modular simulation construction on the urban rail transit vehicle base: the constructor selects a constructor learning mode or a constructor practical training and practicing mode through a computer according to actual requirements;

when a constructor selects a constructor learning mode, the constructor wears VR glasses and holds a VR handle to select an urban rail transit vehicle base project, browses and experiences a three-dimensional construction scene roaming model corresponding to the selected urban rail transit vehicle base project, and a computer controls a display to dynamically play a construction picture of the three-dimensional construction scene roaming model based on a timeline;

in actual use, the computer controls the display to dynamically play the construction picture of the three-dimensional construction scene roaming model based on the time line, so that other constructors can watch and learn the construction picture.

When a constructor selects a constructor training exercise mode, the constructor wears VR glasses, holds a VR handle, selects an urban rail transit vehicle base project, utilizes the VR handle to carry out construction process simulation on a three-dimensional construction scene dynamic simulation model corresponding to the selected urban rail transit vehicle base project, and prompts wrong operation by a computer if the constructor uses the VR handle to control a virtual constructor to call a modular database sequence which is not in accordance with the optimal construction process corresponding to the urban rail transit vehicle base project and the sequence of the engineering progress, and the virtual constructor cannot call a wrong modular database; and if the construction personnel use the VR handle to control the virtual construction personnel to call the modular database in a sequence which is consistent with the sequence of the optimal construction flow and the engineering progress corresponding to the urban rail transit vehicle base project, the virtual construction personnel call the used modular database smoothly, so that the dynamic simulation of the urban rail transit vehicle base project by the virtual construction personnel is realized, and the dynamic simulation is displayed by a display.

The three-dimensional construction scene model comprises a three-dimensional construction scene roaming model and a three-dimensional construction scene dynamic simulation model, the optimal construction process and the engineering progress of the urban rail transit vehicle base sub-project based on the time line are utilized, the three-dimensional construction scene roaming model meets the clear and visual learning requirement of a constructor in the construction process, and the three-dimensional construction scene dynamic simulation model meets the requirement of practical training and practicing of the constructor in the construction process, so that the three-dimensional construction scene dynamic simulation model is complete in function and good in use effect.

When the system is used, the optimal construction flow and the engineering progress are determined, so that the construction scheme of the project of the urban rail transit vehicle base is further determined, the dynamic simulation is carried out on the construction process, the modular construction is simple and convenient in construction, flexible in assembly and environment-friendly, and a large number of building products are produced and finished by a workshop through the modular construction; the assembly operation is mainly carried out on site, and the cast-in-place operation of the traditional construction is replaced; the construction is integrated by adopting building and decoration, decoration and construction can be carried out synchronously, a clear and visual learning mode is provided for constructors, the constructors can find out the deviation between the construction process understood by the constructors and the optimal construction process, the construction scheme is adjusted in time, the optimal distribution of people, machines, materials, methods and rings is realized, and the construction progress of a vehicle base is effectively ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (4)

1. An urban rail transit vehicle base modular construction simulation method based on VR and BIM is characterized by comprising the following steps:

step one, establishing a modular database, wherein the process is as follows:

step 101, establishing a modular environment database: constructing a modular environment database of the environment of an urban rail transit vehicle base by using a BIM platform in a mode of exploring and inquiring a local hydrological data manual on site, wherein the modular environment database consists of a natural environment model and a geological environment model, the natural environment model comprises terrain, landform, hydrological conditions and climatic conditions, and the geological environment model comprises a soil body structure and soil texture;

102, establishing a modular basic material database: according to the design requirements and the design results of the project of the urban rail transit vehicle base, constructing a modular base material database used in the project construction of different urban rail transit vehicle bases by using the project of the urban rail transit vehicle base as a unit by using a BIM platform, wherein the modular base material database comprises basic raw materials;

the urban rail transit vehicle base project comprises a station roadbed project, a building monomer project, an outdoor comprehensive pipeline project, a station track project, an auxiliary building and an outdoor environment project;

the station subgrade project comprises foundation treatment construction, embankment treatment construction, foundation bed treatment construction and cutting treatment construction which are sequentially treated;

the single building construction project comprises foundation construction, building main structure construction, building decoration construction, roof construction, building water supply and drainage heating construction, building electrical construction, ventilation air conditioning construction and elevator construction which are sequentially processed;

the outdoor comprehensive pipeline engineering comprises water supply pipeline construction, drainage pipeline construction, cable tunnel construction, cable trench construction, cable groove construction, compressed air pipeline construction and outdoor electrical construction which are sequentially processed;

the station track engineering comprises integral ballast bed track construction and common track construction which are sequentially processed;

the auxiliary building and outdoor environment engineering comprises roadbed construction, pavement construction, auxiliary building construction, auxiliary square construction and auxiliary sidewalk construction which are sequentially processed;

103, establishing a modular assembly material database: according to the design requirements and the design results of the urban rail transit vehicle base project, a BIM platform is utilized, the urban rail transit vehicle base project is taken as a unit to construct modular assembly material databases used in the construction of different urban rail transit vehicle base projects, and the modular assembly material databases comprise prefabricated modules used for carrying out module assembly during the construction of the urban rail transit vehicle base project;

step 104, establishing a modular construction machine database: according to the design requirements and the design results of the urban rail transit vehicle base project, a BIM platform is utilized, and the urban rail transit vehicle base project is taken as a unit to construct a modular construction machine database used in construction of different urban rail transit vehicle base projects, wherein the modular construction machine database comprises machines, instruments and tools;

step two, constructing a three-dimensional construction scene model: firstly, designing virtual constructors for different urban rail transit vehicle base project projects by utilizing a BIM platform; then, on the basis of a modular database, constructing a three-dimensional construction scene model according to the optimal construction flow and the engineering progress of the project of different urban rail transit vehicle base sub-projects based on a time line, wherein the three-dimensional construction scene model comprises a three-dimensional construction scene roaming model for constructor learning and a three-dimensional construction scene dynamic simulation model for constructor training exercise;

the construction process of the three-dimensional construction scene roaming model is as follows: modeling and optimizing an optimal construction process corresponding to the project of the urban rail transit vehicle base and a modular database used in the project progress through a BIM platform, combining dynamic construction of virtual constructors, importing the optimal construction process and the modular database into virtual reality equipment, classifying the used modular databases according to the sequence of the optimal construction process and the project progress corresponding to the project of the urban rail transit vehicle base, dynamically playing by a computer based on a timeline, refreshing a three-dimensional construction scene interface in real time, and completing dynamic simulation of a three-dimensional construction scene roaming model;

the three-dimensional construction scene dynamic simulation model construction process comprises the following steps: importing the optimal construction process corresponding to the project of the urban rail transit vehicle base and the modular database used in the project progress into virtual reality equipment, classifying the used modular databases according to the sequence of the optimal construction process corresponding to the project of the urban rail transit vehicle base and the project progress, and calling the used modular databases by using the virtual reality equipment through construction personnel to realize the dynamic simulation of the urban rail transit vehicle base project by the virtual construction personnel;

the virtual reality equipment comprises VR glasses and a VR handle;

step three, selecting a modular construction simulation mode of the urban rail transit vehicle base and carrying out modular simulation construction on the urban rail transit vehicle base: the constructor selects a constructor learning mode or a constructor practical training and practicing mode through a computer according to actual requirements;

when a constructor selects a constructor learning mode, the constructor wears VR glasses and holds a VR handle to select an urban rail transit vehicle base project, browses and experiences a three-dimensional construction scene roaming model corresponding to the selected urban rail transit vehicle base project, and a computer controls a display to dynamically play a construction picture of the three-dimensional construction scene roaming model based on a timeline;

when a constructor selects a constructor training exercise mode, the constructor wears VR glasses, holds a VR handle, selects an urban rail transit vehicle base project, utilizes the VR handle to carry out construction process simulation on a three-dimensional construction scene dynamic simulation model corresponding to the selected urban rail transit vehicle base project, and prompts wrong operation by a computer if the constructor uses the VR handle to control a virtual constructor to call a modular database sequence which is not in accordance with the optimal construction process corresponding to the urban rail transit vehicle base project and the sequence of the engineering progress, and the virtual constructor cannot call a wrong modular database; and if the construction personnel use the VR handle to control the virtual construction personnel to call the modular database in a sequence which is consistent with the sequence of the optimal construction flow and the engineering progress corresponding to the urban rail transit vehicle base project, the virtual construction personnel call the used modular database smoothly, so that the dynamic simulation of the urban rail transit vehicle base project by the virtual construction personnel is realized, and the dynamic simulation is displayed by a display.

2. The VR and BIM based urban rail transit vehicle base modular construction simulation method of claim 1, wherein: basic raw materials corresponding to the modular base material database of the station subgrade project comprise earthwork, reinforcing steel bars and concrete; the basic raw materials corresponding to the modular base material database of the station track engineering comprise steel rails, broken stones, concrete, turnouts, fasteners, signal signs and warning signs; the basic raw materials corresponding to the modular base material database of the auxiliary building and the outdoor environmental engineering comprise earthwork, broken stone, kerb, reinforcing steel bars, concrete, metal wires, cables, cable bridges, lamps, grounding devices, pipelines, sanitary wares, air pipes and fans.

3. The VR and BIM based urban rail transit vehicle base modular construction simulation method of claim 1, wherein: the prefabricated modules corresponding to the modular assembly material database of the single building construction project comprise prefabricated wall modules, prefabricated floor modules, prefabricated roof modules and prefabricated support modules; the prefabricated modules corresponding to the modular assembly material database of the outdoor comprehensive pipeline project comprise prefabricated pipe section modules and prefabricated pipeline system modules.

4. The VR and BIM based urban rail transit vehicle base modular construction simulation method of claim 1, wherein: the machine comprises a transportation machine, a hoisting machine, a module assembling machine and a lifting machine, and the instrument comprises a signal detection instrument.

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