技术领域Technical Field
本发明涉及桥梁结构及岩土工程的综合技术领域，具体是一种用于山地城市交通与广场共建的多层钢混框架桥及其施工方法。The present invention relates to the comprehensive technical field of bridge structures and geotechnical engineering, and in particular to a multi-layer steel-concrete frame bridge used for co-construction of mountainous urban traffic and squares and a construction method thereof.
背景技术Background Art
公共空间是居民主要户外活动空间，随着人民对美好生活向往的愿望加强，工程建设更加注重生态、绿色、环保，以机动车交通通行为主要功能的道路设计向城市慢行系统、宜居的生态环境改善转变已成为共识。传统的工程建设周期较长，对周边环境影响较大，对城市土地空间的利用效率较低，亟需对传统的城市道路平面设计方案向多维立体方向进行优化升级。Public space is the main outdoor activity space for residents. As people's desire for a better life increases, engineering construction pays more attention to ecology, greenness and environmental protection. It has become a consensus to transform the road design with motor vehicle traffic as the main function to the urban slow-moving system and livable ecological environment improvement. The traditional engineering construction period is long, the impact on the surrounding environment is large, and the utilization efficiency of urban land space is low. It is urgent to optimize and upgrade the traditional urban road plane design scheme in a multi-dimensional and three-dimensional direction.
发明内容Summary of the invention
本发明的目的是提供一种用于山地城市交通与广场共建的多层钢混框架桥，包括若干支护桩体系、若干可适应空间变形的支承结构、若干顶层装配式钢混组合梁、若干中层装配式钢混组合梁、若干钢管框架柱、若干梁柱节点区、若干钢筋混凝土灌注桩、若干防落梁。The purpose of the present invention is to provide a multi-story steel-concrete frame bridge for co-construction of mountain city traffic and squares, including a plurality of supporting pile systems, a plurality of supporting structures that can adapt to spatial deformation, a plurality of top-layer assembled steel-concrete composite beams, a plurality of middle-layer assembled steel-concrete composite beams, a plurality of steel pipe frame columns, a plurality of beam-column node areas, a plurality of reinforced concrete cast-in-place piles, and a plurality of anti-fall beams.
所述可适应空间变形的支承结构浇筑在支护桩体系上。The supporting structure capable of adapting to spatial deformation is cast on the supporting pile system.
所述顶层装配式钢混组合梁通过梁柱节点区与钢管框架柱连接。The top-level assembled steel-concrete composite beam is connected to the steel tube frame column through the beam-column node area.
所述中层装配式钢混组合梁通过梁柱节点区与钢管框架柱连接。The middle-layer assembled steel-concrete composite beam is connected to the steel pipe frame column through the beam-column node area.
所述钢筋混凝土灌注桩连接相邻钢管框架柱。The reinforced concrete cast-in-place piles connect adjacent steel pipe frame columns.
所述防落梁与支护桩体系连接。The anti-fall beam is connected to the supporting pile system.
进一步，所述支护桩体系包括支护桩桩身、支护桩顶部冠梁、挡土背墙。Furthermore, the supporting pile system includes a supporting pile body, a crown beam on the top of the supporting pile, and a retaining back wall.
所述支护桩顶部冠梁通过内部钢筋与支护桩桩身连接。The crown beam at the top of the supporting pile is connected to the supporting pile body through internal steel bars.
所述挡土背墙通过内部钢筋与支护桩桩身连接。The retaining back wall is connected to the supporting pile body through internal steel bars.
进一步，所述可适应空间变形的支承结构包括可适应空间变形的支承底座和橡胶支承。Furthermore, the support structure capable of adapting to spatial deformation includes a support base capable of adapting to spatial deformation and a rubber support.
所述可适应空间变形的支承底座通过预埋螺栓与支护桩顶部冠梁浇筑在一起。The supporting base capable of adapting to spatial deformation is cast together with the crown beam on the top of the supporting pile through embedded bolts.
所述橡胶支承设置于可适应空间变形的支承底座之上。The rubber support is arranged on a support base which can adapt to spatial deformation.
进一步，所述顶层装配式钢混组合梁包括顶层纵向钢梁、顶层横向钢梁、顶层现浇钢筋混凝土面板、顶层纵向分配钢梁、顶层三角形刚性腋角板、顶层抗剪连接栓钉。Furthermore, the top-level assembled steel-concrete composite beam includes a top-level longitudinal steel beam, a top-level transverse steel beam, a top-level cast-in-place reinforced concrete panel, a top-level longitudinal distribution steel beam, a top-level triangular rigid axil plate, and a top-level shear-resistant connecting bolt.
所述顶层纵向钢梁与钢管框架柱连接在一起。The top longitudinal steel beam is connected with the steel pipe frame column.
所述顶层横向钢梁与钢管框架柱连接在一起。The top-level transverse steel beams are connected with the steel pipe frame columns.
相邻顶层横向钢梁之间设置顶层纵向分配钢梁。Top-level longitudinal distribution steel beams are arranged between adjacent top-level transverse steel beams.
所述顶层纵向分配钢梁的翼缘板顶面设置顶层抗剪连接栓钉。A top layer of shear-resistant connecting bolts is arranged on the top surface of the flange plate of the top layer of longitudinal distribution steel beam.
所述顶层三角形刚性腋角板设置在顶层横向钢梁的翼缘板下方，通过焊接与钢管框架柱连接成整体。The top triangular rigid axil angle plate is arranged below the flange plate of the top transverse steel beam and is connected to the steel pipe frame column by welding to form a whole.
所述顶层现浇钢筋混凝土面板通过顶层抗剪连接栓钉与顶层纵向钢梁、顶层横向钢梁浇筑在一起，形成顶层钢混组合梁体系。The top cast-in-place reinforced concrete panel is cast together with the top longitudinal steel beam and the top transverse steel beam through the top shear connection bolts to form a top steel-concrete composite beam system.
所述中层装配式钢混组合梁包括中层纵向钢梁、中层横向钢梁、中层现浇钢筋混凝土面板、中层纵向分配钢梁、中层三角形刚性腋角板、中层抗剪连接栓钉。The middle-layer assembled steel-concrete composite beam comprises a middle-layer longitudinal steel beam, a middle-layer transverse steel beam, a middle-layer cast-in-place reinforced concrete panel, a middle-layer longitudinal distribution steel beam, a middle-layer triangular rigid axil plate, and a middle-layer shear-resistant connecting bolt.
所述中层纵向钢梁与钢管框架柱连接在一起。The middle-layer longitudinal steel beams are connected with the steel pipe frame columns.
所述中层横向钢梁与钢管框架柱连接在一起。The middle-layer transverse steel beams are connected with the steel pipe frame columns.
相邻中层横向钢梁之间设置中层纵向分配钢梁。A middle-layer longitudinal distribution steel beam is arranged between adjacent middle-layer transverse steel beams.
所述中层纵向分配钢梁的翼缘板顶面设置中层抗剪连接栓钉。The middle layer shear-resistant connecting bolts are arranged on the top surface of the flange plate of the middle layer longitudinal distribution steel beam.
所述中层三角形刚性腋角板设置在中层横向钢梁的翼缘板下方，通过焊接与钢管框架柱连接成整体。The middle-layer triangular rigid axil angle plate is arranged below the flange plate of the middle-layer transverse steel beam and is connected to the steel pipe frame column by welding to form a whole.
所述中层现浇钢筋混凝土面板通过中层抗剪连接栓钉与中层纵向钢梁、中层横向钢梁浇筑在一起，形成中层钢混组合梁体系。The middle-layer cast-in-place reinforced concrete panel is cast together with the middle-layer longitudinal steel beam and the middle-layer transverse steel beam through the middle-layer shear-resistant connecting bolts to form a middle-layer steel-concrete composite beam system.
进一步，所述钢管框架柱包括矩形钢管立柱、立柱内隔板、立柱内部灌注混凝土。Furthermore, the steel tube frame column includes a rectangular steel tube column, a partition inside the column, and concrete poured inside the column.
所述钢管立柱的内部设置有柱内隔板。An inner column partition is arranged inside the steel pipe column.
所述柱内隔板与矩形钢管立柱焊接。The column inner partition is welded to the rectangular steel pipe column.
所述柱内隔板上开设有钢管框架柱顶盖板上的混凝土灌注孔、混凝土灌注观测孔。The column inner partition is provided with a concrete pouring hole and a concrete pouring observation hole on the top cover plate of the steel pipe frame column.
所述混凝土灌注观测孔用于观测立柱内部灌注混凝土的灌注饱满程度。The concrete pouring observation hole is used to observe the fullness of the concrete poured inside the column.
所述立柱内部灌注混凝土通过混凝土灌注孔灌注在矩形钢管立柱内部。The concrete poured inside the column is poured into the interior of the rectangular steel pipe column through the concrete pouring hole.
进一步，所述梁柱节点区包括拼接处腹板高强度螺栓连接区、拼接处顶板焊缝连接区、拼接处底板焊缝连接区、拼接处三角形刚性腋角板。Furthermore, the beam-column node area includes a high-strength bolt connection area of the web at the joint, a top plate weld connection area at the joint, a bottom plate weld connection area at the joint, and a triangular rigid axil angle plate at the joint.
所述拼接处腹板高强度螺栓连接区设置在顶层纵向钢梁、中层纵向钢梁的侧壁。The high-strength bolt connection area of the web at the splicing location is arranged on the side walls of the top-layer longitudinal steel beam and the middle-layer longitudinal steel beam.
当拼接处腹板高强度螺栓连接区设置在顶层纵向钢梁时，通过拼接处顶板焊缝连接区与顶层横向钢梁的顶板连接，通过拼接处底板焊缝连接区与顶层横向钢梁的底板连接。When the high-strength bolt connection area of the web at the splicing is set on the top longitudinal steel beam, it is connected to the top plate of the top transverse steel beam through the top plate weld connection area at the splicing, and is connected to the bottom plate of the top transverse steel beam through the bottom plate weld connection area at the splicing.
当拼接处腹板高强度螺栓连接区设置在中层纵向钢梁时，通过拼接处顶板焊缝连接区与中层横向钢梁的顶板连接，通过拼接处底板焊缝连接区与中层横向钢梁的底板连接。When the high-strength bolt connection area of the web at the splicing is set on the middle-layer longitudinal steel beam, it is connected to the top plate of the middle-layer transverse steel beam through the top plate weld connection area at the splicing, and is connected to the bottom plate of the middle-layer transverse steel beam through the bottom plate weld connection area at the splicing.
所述拼接处三角形刚性腋角板设置在顶层横向钢梁、中层横向钢梁的翼缘板下方，且通过焊接与钢管框架柱的矩形钢管立柱连接成整体。The triangular rigid axil angle plate at the joint is arranged below the flange plates of the top-layer transverse steel beam and the middle-layer transverse steel beam, and is connected to the rectangular steel pipe column of the steel pipe frame column into a whole through welding.
进一步，所述钢筋混凝土灌注桩包括桩身、桩柱连接件。Furthermore, the reinforced concrete cast-in-place pile includes a pile body and a pile-column connector.
所述桩身包括钢筋混凝土灌注桩。The pile body comprises a reinforced concrete cast-in-place pile.
所述桩身预埋钢管立柱柱脚和桩柱连接件。The pile body is pre-embedded with steel pipe column footings and pile-column connectors.
所述桩身通过钢管立柱柱脚、桩柱连接件与钢管框架柱连接。The pile body is connected to the steel pipe frame column through a steel pipe column foot and a pile-column connector.
所述桩柱连接件包括抗剪连接钢板、抗剪连接栓钉、抗剪连接钢筋。The pile-column connecting piece comprises a shear-resistant connecting steel plate, a shear-resistant connecting bolt and a shear-resistant connecting steel bar.
进一步，所述防落梁用于搭载位移观测计。所述位移观测计用于观测支护桩体系变形。Furthermore, the anti-fall beam is used to carry a displacement observation meter. The displacement observation meter is used to observe the deformation of the supporting pile system.
所述防落梁包括螺栓、刚性加劲板、弹簧垫圈。The anti-drop beam comprises bolts, a rigid stiffening plate and a spring washer.
所述刚性加劲板通过螺栓和弹簧垫圈与支护桩体系的支护桩顶部冠梁连接。The rigid stiffening plate is connected to the top crown beam of the supporting pile of the supporting pile system through bolts and spring washers.
所述刚性加劲板上搭载位移观测计。The rigid stiffening plate is equipped with a displacement observation meter.
所述螺栓预埋在支护桩顶部冠梁内。The bolts are embedded in the top crown beam of the supporting pile.
进一步，还包括若干支护桩间纵向混凝土连接梁。Furthermore, it also includes a plurality of longitudinal concrete connecting beams between the supporting piles.
所述支护桩间纵向混凝土连接梁包括预埋连接螺栓、植入化学锚栓、纵向混凝土连接梁。The longitudinal concrete connecting beam between the supporting piles comprises pre-buried connecting bolts, implanted chemical anchor bolts and a longitudinal concrete connecting beam.
当支护桩体系之间的间距与顶层装配式钢混组合梁的顶层横向钢梁之间的间距一致时，所述支护桩体系通过植入化学锚栓与顶层横向钢梁连接。When the spacing between the supporting pile systems is consistent with the spacing between the top transverse steel beams of the top prefabricated steel-concrete composite beams, the supporting pile system is connected to the top transverse steel beams by implanting chemical anchor bolts.
当支护桩体系之间的间距与顶层装配式钢混组合梁的顶层横向钢梁之间的间距不一致时，所述支护桩体系通过纵向混凝土连接梁、预埋连接螺栓与顶层横向钢梁连接。When the spacing between the supporting pile systems is inconsistent with the spacing between the top transverse steel beams of the top prefabricated steel-concrete composite beams, the supporting pile system is connected to the top transverse steel beams through longitudinal concrete connecting beams and embedded connecting bolts.
当支护桩体系之间的间距与中层装配式钢混组合梁的中层横向钢梁之间的间距一致时，所述支护桩体系通过植入化学锚栓与中层横向钢梁连接。When the spacing between the supporting pile systems is consistent with the spacing between the middle-layer transverse steel beams of the middle-layer assembled steel-concrete composite beams, the supporting pile system is connected to the middle-layer transverse steel beams by implanting chemical anchor bolts.
当支护桩体系之间的间距与中层装配式钢混组合梁的中层横向钢梁之间的间距不一致时，所述支护桩体系通过纵向混凝土连接梁、预埋连接螺栓与中层横向钢梁连接。When the spacing between the supporting pile systems is inconsistent with the spacing between the middle-layer transverse steel beams of the middle-layer assembled steel-concrete composite beams, the supporting pile system is connected to the middle-layer transverse steel beams through longitudinal concrete connecting beams and embedded connecting bolts.
一种用于山地城市交通与广场共建的多层钢混框架桥的施工方法，包括以下步骤：A construction method for a multi-layer steel-concrete frame bridge for co-construction of mountainous urban traffic and squares comprises the following steps:
1)施工支护桩桩身，施工支护桩身顶部冠梁、挡土背墙。1) Construction of supporting pile body, construction of cap beam on top of supporting pile body and retaining wall.
2)加工制造顶层纵向钢梁、中层顶层纵向钢梁、顶层横向钢梁、中层顶层横向钢梁、顶层纵向分配钢梁和中层顶层纵向分配钢梁，并在钢梁顶部设抗剪连接栓钉。2) Process and manufacture top-layer longitudinal steel beams, middle-layer top-layer longitudinal steel beams, top-layer transverse steel beams, middle-layer top-layer transverse steel beams, top-layer longitudinal distribution steel beams and middle-layer top-layer longitudinal distribution steel beams, and set shear-resistant connecting bolts on the top of the steel beams.
3)开挖支护桩桩前土石方。3) Excavate earth and stone in front of the supporting piles.
4)施工框架结构桩，并预埋钢管立柱柱脚及桩柱连接件。4) Construct frame structure piles and pre-embed the steel pipe column bases and pile-column connectors.
5)现场吊装钢管框架柱并安装就位，根据柱身预留接头连接装配式钢混组合梁中的顶层纵向钢梁、中层顶层纵向钢梁、顶层横向钢梁和中层顶层横向钢梁。5) The steel tube frame columns are hoisted on site and installed in place, and the top longitudinal steel beams, middle top longitudinal steel beams, top transverse steel beams and middle top transverse steel beams of the prefabricated steel-concrete composite beams are connected according to the reserved joints on the column body.
6)现场分层吊装定位并安装顶层纵向分配钢梁和中层顶层纵向分配钢梁，安装完成后顶部设顶层现浇钢筋混凝土面板和中层顶层现浇钢筋混凝土面板。6) The top-layer longitudinal distribution steel beams and the middle-layer top-layer longitudinal distribution steel beams are positioned and installed on site in layers. After the installation is completed, the top layer cast-in-place reinforced concrete panels and the middle-layer top-layer cast-in-place reinforced concrete panels are set on the top.
7)完成各层面板上方的铺装层施工。7) Complete the construction of the paving layer above each layer of panels.
值得说明的是，本发明一种用于山地城市交通与广场共建的多层钢混框架桥及其施工方法，框架桥包括支护桩体系、可适应空间变形的支承结构、顶层装配式钢混组合梁，中层装配式钢混组合梁、钢管框架柱、梁柱节点区、钢筋混凝土灌注桩、防落梁及位移观测计、支护桩间纵向混凝土连接梁等组成。支护桩一方面可承受桩后水平土压力，另一方面又可作为顶层及中层装配式钢混组合梁的竖向受力构件。本发明建成后可满足立体多层功能空间需求，顶层为城市休闲广场，中层为城市公共停车空间，底层为城市交通空间。本发明施工便捷，采用装配式结构可大大节省建设工期。同时多层框架桥可节约城市用地，在山地城市用地较为紧张的情况下对土地进行了综合利用，提高了城市用地效率，节省了工程投资。It is worth noting that the present invention is a multi-layer steel-concrete frame bridge and its construction method for co-construction of mountain city traffic and square. The frame bridge includes a support pile system, a supporting structure that can adapt to spatial deformation, a top-layer assembled steel-concrete composite beam, a middle-layer assembled steel-concrete composite beam, a steel pipe frame column, a beam-column node area, a reinforced concrete cast-in-place pile, an anti-fall beam and a displacement observation meter, and a longitudinal concrete connecting beam between the support piles. On the one hand, the support pile can withstand the horizontal soil pressure behind the pile, and on the other hand, it can be used as a vertical force-bearing member of the top and middle-layer assembled steel-concrete composite beams. After the present invention is completed, it can meet the needs of three-dimensional multi-layer functional space. The top layer is an urban leisure square, the middle layer is an urban public parking space, and the bottom layer is an urban traffic space. The present invention is convenient to construct, and the use of an assembled structure can greatly save the construction period. At the same time, the multi-layer frame bridge can save urban land, and the land is comprehensively utilized when the mountainous urban land is relatively tight, thereby improving the efficiency of urban land use and saving engineering investment.
本发明的技术效果是毋庸置疑的，本发明的有益效果包括：The technical effects of the present invention are undoubted, and the beneficial effects of the present invention include:
1)本发明采用钢混组合梁，可快速施工，节省建设工期，钢混之间的抗剪连接可保证钢混组合梁体系整体受力。1) The present invention adopts steel-concrete composite beams, which can be quickly constructed and save construction time. The shear-resistant connection between steel and concrete can ensure the overall stress of the steel-concrete composite beam system.
2)本发明结构自重较轻，钢材强度高，可以更好满足桥下的功能空间需求。2) The structure of the present invention has a light weight and high steel strength, which can better meet the functional space requirements under the bridge.
3)本发明在从严控制支护桩位移的前提下，对支护桩进行综合利用，同时在支护桩顶部设置位移观测计及防落梁设施综合体，可有效监测结构在施工期间及后续运营期间的位移等指标。3) Under the premise of strictly controlling the displacement of the supporting piles, the present invention makes comprehensive use of the supporting piles, and at the same time sets a displacement observation meter and a beam-falling prevention facility complex on the top of the supporting piles, which can effectively monitor the displacement and other indicators of the structure during the construction period and the subsequent operation period.
4)本发明综合利用了城市公共空间，提出了多维立体使用城市空间的功能，满足了以人为本的城市公共空间需求，增加了城市休闲空间。4) The present invention comprehensively utilizes urban public space, proposes the function of multi-dimensional three-dimensional use of urban space, meets the people-oriented demand for urban public space, and increases urban leisure space.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是一种用于山地城市交通与广场共建的多层钢混框架桥三维立体构造示意图；FIG1 is a schematic diagram of a three-dimensional structure of a multi-layer steel-concrete frame bridge for co-construction of mountainous urban transportation and squares;
图2是一种用于山地城市交通与广场共建的多层钢混框架桥示意图；FIG2 is a schematic diagram of a multi-layer steel-concrete frame bridge used for mountainous urban transportation and square construction;
图3是顶层装配式钢混组合梁平面布置图；Figure 3 is a plan view of the top-level assembled steel-concrete composite beam;
图4是中层装配式钢混组合梁平面布置图；FIG4 is a plan view of the middle-layer assembled steel-concrete composite beam;
图5是梁柱节点区大样；Figure 5 is a large sample of the beam-column node area;
图6是图4位置的平面投影图(钢梁翼缘板顶面投影)；FIG6 is a plan projection view of the position of FIG4 (top surface projection of the steel beam flange plate);
图7是图4位置的平面投影图(反应钢柱内部的投影)；FIG7 is a plan projection diagram of the position of FIG4 (projection of the interior of the reaction steel column);
图8是防落梁及位移观测计安装点位图；Figure 8 is a diagram of the installation points of the anti-fall beam and the displacement observation meter;
图9是多层框架桥的桩柱连接件布置示意图；FIG9 is a schematic diagram of the arrangement of pile-column connectors of a multi-story frame bridge;
图中：支护桩体系1、可适应空间变形的支承结构2、顶层装配式钢混组合梁3、中层装配式钢混组合梁4、钢管框架柱5、梁柱节点区6、钢筋混凝土灌注桩7、防落梁8、支护桩桩身11、支护桩顶部冠梁12、挡土背墙13、可适应空间变形的支承底座21、橡胶支承22、顶层纵向钢梁31、顶层横向钢梁32、顶层现浇钢筋混凝土面板33、顶层纵向分配钢梁34、顶层三角形刚性腋角板35、顶层抗剪连接栓钉36、中层纵向钢梁41、中层横向钢梁42、中层现浇钢筋混凝土面板43、中层纵向分配钢梁44、中层三角形刚性腋角板45、中层抗剪连接栓钉46、矩形钢管立柱51、立柱内隔板52、立柱内部灌注混凝土53、拼接处腹板高强度螺栓连接区61、拼接处顶板焊缝连接区62、拼接处底板焊缝连接区63、拼接处三角形刚性腋角板64、桩身71、桩柱连接件72、螺栓81、刚性加劲板82、位移观测计83、弹簧垫圈84、预埋连接螺栓91、植入化学锚栓92、纵向混凝土连接梁93。In the figure: support pile system 1, support structure adaptable to spatial deformation 2, top-layer assembled steel-concrete composite beam 3, middle-layer assembled steel-concrete composite beam 4, steel pipe frame column 5, beam-column node area 6, reinforced concrete cast-in-place pile 7, anti-fall beam 8, support pile body 11, top crown beam of support pile 12, retaining back wall 13, support base adaptable to spatial deformation 21, rubber support 22, top-layer longitudinal steel beam 31, top-layer transverse steel beam 32, top-layer cast-in-place reinforced concrete panel 33, top-layer longitudinal distribution steel beam 34, top-layer triangular rigid axil angle plate 35, top-layer shear connection bolt 36, middle-layer longitudinal steel beam 41, middle-layer transverse steel beam 42. middle layer cast-in-place reinforced concrete panel 43. middle layer longitudinal distribution steel beam 44. middle layer triangular rigid axil plate 45. middle layer shear connection bolts 46. rectangular steel pipe column 51. column inner partition 52. column internal poured concrete 53. web high-strength bolt connection area 61. top plate weld connection area 62. bottom plate weld connection area 63. triangular rigid axil plate 64. pile body 71. pile-column connection 72. bolt 81. rigid stiffening plate 82. displacement observation meter 83. spring washer 84. embedded connection bolt 91. implanted chemical anchor 92. longitudinal concrete connection beam 93.
具体实施方式DETAILED DESCRIPTION
下面结合实施例对本发明作进一步说明，但不应该理解为本发明上述主题范围仅限于下述实施例。在不脱离本发明上述技术思想的情况下，根据本领域普通技术知识和惯用手段，做出各种替换和变更，均应包括在本发明的保护范围内。The present invention is further described below in conjunction with the embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to the common technical knowledge and customary means in the art, which should all be included in the protection scope of the present invention.
实施例1：Embodiment 1:
参见图1至图9，一种用于山地城市交通与广场共建的多层钢混框架桥，包括若干支护桩体系1、若干可适应空间变形的支承结构2、若干顶层装配式钢混组合梁3、若干中层装配式钢混组合梁4、若干钢管框架柱5、若干梁柱节点区6、若干钢筋混凝土灌注桩7、若干防落梁8。Referring to Figures 1 to 9, a multi-story steel-concrete frame bridge for co-construction of mountain city traffic and squares includes a plurality of support pile systems 1, a plurality of supporting structures 2 that can adapt to spatial deformation, a plurality of top-layer assembled steel-concrete composite beams 3, a plurality of middle-layer assembled steel-concrete composite beams 4, a plurality of steel pipe frame columns 5, a plurality of beam-column node areas 6, a plurality of reinforced concrete cast-in-place piles 7, and a plurality of anti-fall beams 8.
所述可适应空间变形的支承结构2浇筑在支护桩体系1上。The supporting structure 2 capable of adapting to spatial deformation is cast on the supporting pile system 1 .
所述顶层装配式钢混组合梁3通过梁柱节点区6与钢管框架柱5连接。The top-level assembled steel-concrete composite beam 3 is connected to the steel pipe frame column 5 through the beam-column node area 6 .
所述中层装配式钢混组合梁4通过梁柱节点区6与钢管框架柱5连接。The middle-layer assembled steel-concrete composite beam 4 is connected to the steel pipe frame column 5 through the beam-column node area 6.
所述钢筋混凝土灌注桩7连接相邻钢管框架柱5。The reinforced concrete cast-in-place piles 7 connect adjacent steel pipe frame columns 5 .
所述防落梁8与支护桩体系1连接。The anti-fall beam 8 is connected to the supporting pile system 1 .
所述支护桩体系1包括支护桩桩身11、支护桩顶部冠梁12、挡土背墙13。The supporting pile system 1 includes a supporting pile body 11 , a supporting pile top cap beam 12 , and a retaining back wall 13 .
所述支护桩顶部冠梁12通过内部钢筋与支护桩桩身11连接。The crown beam 12 at the top of the supporting pile is connected to the supporting pile body 11 through internal steel bars.
所述挡土背墙13通过内部钢筋与支护桩桩身11连接。The retaining back wall 13 is connected to the supporting pile body 11 through internal steel bars.
所述可适应空间变形的支承结构2包括可适应空间变形的支承底座21和橡胶支承22。The support structure 2 capable of adapting to spatial deformation includes a support base 21 capable of adapting to spatial deformation and a rubber support 22 .
所述可适应空间变形的支承底座21通过预埋螺栓与支护桩顶部冠梁12浇筑在一起。The support base 21 that can adapt to spatial deformation is cast together with the top beam 12 of the supporting pile through embedded bolts.
所述橡胶支承22设置于可适应空间变形的支承底座21之上。The rubber support 22 is disposed on a support base 21 that can adapt to spatial deformation.
所述顶层装配式钢混组合梁3包括顶层纵向钢梁31、顶层横向钢梁32、顶层现浇钢筋混凝土面板33、顶层纵向分配钢梁34、顶层三角形刚性腋角板35、顶层抗剪连接栓钉36。The top-level assembled steel-concrete composite beam 3 includes a top-level longitudinal steel beam 31 , a top-level transverse steel beam 32 , a top-level cast-in-place reinforced concrete panel 33 , a top-level longitudinal distribution steel beam 34 , a top-level triangular rigid axil angle plate 35 , and a top-level shear-resistant connecting bolt 36 .
所述顶层纵向钢梁31与钢管框架柱5连接在一起。The top longitudinal steel beam 31 is connected to the steel pipe frame column 5 .
所述顶层横向钢梁32与钢管框架柱5连接在一起。The top-level transverse steel beam 32 is connected to the steel pipe frame column 5 .
相邻顶层横向钢梁32之间设置顶层纵向分配钢梁34。Top-level longitudinal distribution steel beams 34 are arranged between adjacent top-level transverse steel beams 32 .
所述顶层纵向分配钢梁34的翼缘板顶面设置顶层抗剪连接栓钉36。A top-level shear-resistant connecting stud 36 is provided on the top surface of the flange plate of the top-level longitudinal distribution steel beam 34 .
所述顶层三角形刚性腋角板35设置在顶层横向钢梁32的翼缘板下方，通过焊接与钢管框架柱5连接成整体。The top triangular rigid corner plate 35 is arranged below the flange plate of the top transverse steel beam 32 and is connected to the steel pipe frame column 5 by welding to form a whole.
所述顶层现浇钢筋混凝土面板33通过顶层抗剪连接栓钉36与顶层纵向钢梁31、顶层横向钢梁32浇筑在一起，形成顶层钢混组合梁体系。The top cast-in-place reinforced concrete panel 33 is cast together with the top longitudinal steel beam 31 and the top transverse steel beam 32 through the top shear-resistant connecting bolts 36 to form a top steel-concrete composite beam system.
所述中层装配式钢混组合梁4包括中层纵向钢梁41、中层横向钢梁42、中层现浇钢筋混凝土面板43、中层纵向分配钢梁44、中层三角形刚性腋角板45、中层抗剪连接栓钉46。The middle-layer assembled steel-concrete composite beam 4 includes a middle-layer longitudinal steel beam 41, a middle-layer transverse steel beam 42, a middle-layer cast-in-place reinforced concrete panel 43, a middle-layer longitudinal distribution steel beam 44, a middle-layer triangular rigid axil plate 45, and a middle-layer shear-resistant connecting bolt 46.
所述中层纵向钢梁41与钢管框架柱5连接在一起。The middle-layer longitudinal steel beam 41 is connected to the steel pipe frame column 5 .
所述中层横向钢梁42与钢管框架柱5连接在一起。The middle-layer transverse steel beam 42 is connected to the steel pipe frame column 5 .
相邻中层横向钢梁42之间设置中层纵向分配钢梁44。A middle-layer longitudinal distribution steel beam 44 is arranged between adjacent middle-layer transverse steel beams 42 .
所述中层纵向分配钢梁44的翼缘板顶面设置中层抗剪连接栓钉46。A middle-layer shear-resistant connecting bolt 46 is arranged on the top surface of the flange plate of the middle-layer longitudinal distribution steel beam 44 .
所述中层三角形刚性腋角板45设置在中层横向钢梁42的翼缘板下方，通过焊接与钢管框架柱5连接成整体。The middle-layer triangular rigid axil angle plate 45 is arranged below the flange plate of the middle-layer transverse steel beam 42 and is connected to the steel pipe frame column 5 by welding to form a whole.
所述中层现浇钢筋混凝土面板43通过中层抗剪连接栓钉46与中层纵向钢梁41、中层横向钢梁42浇筑在一起，形成中层钢混组合梁体系。The middle layer cast-in-situ reinforced concrete panel 43 is cast together with the middle layer longitudinal steel beam 41 and the middle layer transverse steel beam 42 through the middle layer shear-resistant connecting bolts 46 to form a middle layer steel-concrete composite beam system.
所述钢管框架柱5包括矩形钢管立柱51、立柱内隔板52、立柱内部灌注混凝土53。The steel tube frame column 5 comprises a rectangular steel tube column 51 , a column inner partition 52 , and concrete 53 poured inside the column.
所述钢管立柱51的内部设置有柱内隔板52。An inner column partition 52 is disposed inside the steel pipe column 51 .
所述柱内隔板52与矩形钢管立柱51焊接。The inner column partition 52 is welded to the rectangular steel pipe column 51 .
所述柱内隔板52上开设有钢管框架柱顶盖板上的混凝土灌注孔54、混凝土灌注观测孔55。The column inner partition plate 52 is provided with a concrete pouring hole 54 and a concrete pouring observation hole 55 on the top cover plate of the steel pipe frame column.
所述混凝土灌注观测孔55用于观测立柱内部灌注混凝土53的灌注饱满程度。The concrete pouring observation hole 55 is used to observe the fullness of the concrete 53 poured into the column.
所述立柱内部灌注混凝土53通过混凝土灌注孔54灌注在矩形钢管立柱51内部。The column interior pouring concrete 53 is poured into the interior of the rectangular steel tube column 51 through the concrete pouring hole 54 .
所述梁柱节点区6包括拼接处腹板高强度螺栓连接区61、拼接处顶板焊缝连接区62、拼接处底板焊缝连接区63、拼接处三角形刚性腋角板64。The beam-column node area 6 includes a high-strength bolt connection area 61 of the web at the joint, a top plate weld connection area 62 at the joint, a bottom plate weld connection area 63 at the joint, and a triangular rigid axillary angle plate 64 at the joint.
所述拼接处腹板高强度螺栓连接区61设置在顶层纵向钢梁31、中层纵向钢梁41的侧壁。The web high-strength bolt connection area 61 at the joint is arranged on the side walls of the top longitudinal steel beam 31 and the middle longitudinal steel beam 41 .
当拼接处腹板高强度螺栓连接区61设置在顶层纵向钢梁31时，通过拼接处顶板焊缝连接区62与顶层横向钢梁32的顶板连接，通过拼接处底板焊缝连接区63与顶层横向钢梁32的底板连接。When the high-strength bolt connection area 61 of the web at the splicing point is set at the top longitudinal steel beam 31, it is connected to the top plate of the top transverse steel beam 32 through the top plate weld connection area 62 at the splicing point, and is connected to the bottom plate of the top transverse steel beam 32 through the bottom plate weld connection area 63 at the splicing point.
当拼接处腹板高强度螺栓连接区61设置在中层纵向钢梁41时，通过拼接处顶板焊缝连接区62与中层横向钢梁42的顶板连接，通过拼接处底板焊缝连接区63与中层横向钢梁42的底板连接。When the high-strength bolt connection area 61 of the web at the joint is set at the middle-layer longitudinal steel beam 41, it is connected to the top plate of the middle-layer transverse steel beam 42 through the top plate weld connection area 62 at the joint, and is connected to the bottom plate of the middle-layer transverse steel beam 42 through the bottom plate weld connection area 63 at the joint.
所述拼接处三角形刚性腋角板64设置在顶层横向钢梁32、中层横向钢梁42的翼缘板下方，且通过焊接与钢管框架柱5的矩形钢管立柱51连接成整体。The triangular rigid armpit angle plate 64 at the joint is arranged below the flange plates of the top transverse steel beam 32 and the middle transverse steel beam 42, and is connected to the rectangular steel pipe column 51 of the steel pipe frame column 5 by welding to form a whole.
所述钢筋混凝土灌注桩7包括桩身71、桩柱连接件72。The reinforced concrete cast-in-place pile 7 includes a pile body 71 and a pile-column connector 72 .
所述桩身71包括钢筋混凝土灌注桩。The pile body 71 includes a reinforced concrete cast-in-place pile.
所述桩身71预埋钢管立柱柱脚和桩柱连接件72。The pile body 71 is pre-embedded with a steel pipe column foot and a pile-column connector 72 .
所述桩身71通过钢管立柱柱脚、桩柱连接件72与钢管框架柱5连接。The pile body 71 is connected to the steel pipe frame column 5 through the steel pipe column foot and the pile column connector 72 .
所述桩柱连接件72包括抗剪连接钢板721、抗剪连接栓钉722、抗剪连接钢筋723。The pile-column connector 72 includes a shear-resistant connecting steel plate 721 , a shear-resistant connecting bolt 722 , and a shear-resistant connecting steel bar 723 .
所述防落梁8用于搭载位移观测计83。所述位移观测计83用于观测支护桩体系变形。The anti-fall beam 8 is used to carry a displacement observation meter 83. The displacement observation meter 83 is used to observe the deformation of the supporting pile system.
所述防落梁8包括螺栓81、刚性加劲板82、弹簧垫圈84。The anti-drop beam 8 includes a bolt 81 , a rigid stiffening plate 82 , and a spring washer 84 .
所述刚性加劲板82通过螺栓81和弹簧垫圈84与支护桩体系1的支护桩顶部冠梁12连接。The rigid stiffening plate 82 is connected to the top crown beam 12 of the supporting pile of the supporting pile system 1 through bolts 81 and spring washers 84 .
所述刚性加劲板82上搭载位移观测计83。The rigid stiffening plate 82 is provided with a displacement observation meter 83 .
所述螺栓81预埋在支护桩顶部冠梁12内。The bolts 81 are pre-buried in the crown beam 12 at the top of the supporting pile.
还包括若干支护桩间纵向混凝土连接梁9。It also includes a plurality of longitudinal concrete connecting beams 9 between the supporting piles.
所述支护桩间纵向混凝土连接梁9包括预埋连接螺栓91、植入化学锚栓92、纵向混凝土连接梁93。The longitudinal concrete connecting beam 9 between the supporting piles includes pre-buried connecting bolts 91 , implanted chemical anchor bolts 92 , and a longitudinal concrete connecting beam 93 .
当支护桩体系1之间的间距与顶层装配式钢混组合梁3的顶层横向钢梁32之间的间距一致时，所述支护桩体系1通过植入化学锚栓92与顶层横向钢梁32连接。When the spacing between the supporting pile systems 1 is consistent with the spacing between the top transverse steel beams 32 of the top prefabricated steel-concrete composite beams 3 , the supporting pile system 1 is connected to the top transverse steel beams 32 by implanting chemical anchor bolts 92 .
当支护桩体系1之间的间距与顶层装配式钢混组合梁3的顶层横向钢梁32之间的间距不一致时，所述支护桩体系1通过纵向混凝土连接梁93、预埋连接螺栓91与顶层横向钢梁32连接。When the spacing between the supporting pile systems 1 is inconsistent with the spacing between the top transverse steel beams 32 of the top prefabricated steel-concrete composite beams 3, the supporting pile system 1 is connected to the top transverse steel beams 32 through the longitudinal concrete connecting beams 93 and the embedded connecting bolts 91.
当支护桩体系1之间的间距与中层装配式钢混组合梁4的中层横向钢梁42之间的间距一致时，所述支护桩体系1通过植入化学锚栓92与中层横向钢梁42连接。When the spacing between the supporting pile systems 1 is consistent with the spacing between the middle-layer transverse steel beams 42 of the middle-layer assembled steel-concrete composite beams 4 , the supporting pile systems 1 are connected to the middle-layer transverse steel beams 42 by implanting chemical anchor bolts 92 .
当支护桩体系1之间的间距与中层装配式钢混组合梁4的中层横向钢梁42之间的间距不一致时，所述支护桩体系1通过纵向混凝土连接梁93、预埋连接螺栓91与中层横向钢梁42连接。When the spacing between the supporting pile systems 1 is inconsistent with the spacing between the middle-layer transverse steel beams 42 of the middle-layer assembled steel-concrete composite beams 4, the supporting pile system 1 is connected to the middle-layer transverse steel beams 42 through the longitudinal concrete connecting beams 93 and the embedded connecting bolts 91.
一种用于山地城市交通与广场共建的多层钢混框架桥的施工方法，包括以下步骤：A construction method for a multi-layer steel-concrete frame bridge for co-construction of mountainous urban traffic and squares comprises the following steps:
1)施工支护桩桩身11，施工支护桩身顶部冠梁12、挡土背墙13。1) Construction of the supporting pile body 11, the top cap beam 12 of the supporting pile body, and the retaining back wall 13.
2)加工制造顶层纵向钢梁31、中层顶层纵向钢梁41、顶层横向钢梁32、中层顶层横向钢梁42、顶层纵向分配钢梁34和中层顶层纵向分配钢梁44，并在钢梁顶部设抗剪连接栓钉。2) Process and manufacture the top-layer longitudinal steel beam 31, the middle-layer top-layer longitudinal steel beam 41, the top-layer transverse steel beam 32, the middle-layer top-layer transverse steel beam 42, the top-layer longitudinal distribution steel beam 34 and the middle-layer top-layer longitudinal distribution steel beam 44, and set shear-resistant connecting bolts on the top of the steel beams.
3)开挖支护桩桩前土石方。3) Excavate earth and stone in front of the supporting piles.
4)施工框架结构桩，并预埋钢管立柱柱脚及桩柱连接件72。4) Construct frame structure piles and pre-embed the steel pipe column footings and pile-column connectors 72.
5)现场吊装钢管框架柱5并安装就位，根据柱身预留接头连接装配式钢混组合梁中的顶层纵向钢梁31、中层顶层纵向钢梁41、顶层横向钢梁32和中层顶层横向钢梁42。5) The steel tube frame column 5 is hoisted on site and installed in place, and the top longitudinal steel beam 31, the middle top longitudinal steel beam 41, the top transverse steel beam 32 and the middle top transverse steel beam 42 in the assembled steel-concrete composite beam are connected according to the reserved joints on the column body.
6)现场分层吊装定位并安装顶层纵向分配钢梁34和中层顶层纵向分配钢梁44，安装完成后顶部设顶层现浇钢筋混凝土面板33和中层顶层现浇钢筋混凝土面板43。6) The top longitudinal distribution steel beam 34 and the middle top longitudinal distribution steel beam 44 are positioned and installed on site in layers. After installation, the top cast-in-place reinforced concrete panel 33 and the middle top cast-in-place reinforced concrete panel 43 are set on the top.
7)完成各层面板上方的铺装层施工。7) Complete the construction of the paving layer above each layer of panels.
实施例2：Embodiment 2:
一种用于山地城市交通与广场共建的多层钢混框架桥，主要见实施例1，该框架桥主要包括了支护桩体系1、可适应空间变形的支承结构2、顶层装配式钢混组合梁3，中层装配式钢混组合梁4、钢管框架柱5、梁柱节点区6、钢筋混凝土灌注桩7、防落梁及位移观测计8、支护桩间纵向混凝土连接梁9。A multi-layer steel-concrete frame bridge for co-construction of mountain city traffic and squares, mainly see embodiment 1, the frame bridge mainly includes a support pile system 1, a supporting structure 2 that can adapt to spatial deformation, a top-layer assembled steel-concrete composite beam 3, a middle-layer assembled steel-concrete composite beam 4, a steel pipe frame column 5, a beam-column node area 6, reinforced concrete cast-in-place piles 7, an anti-fall beam and a displacement observation meter 8, and a longitudinal concrete connecting beam 9 between the support piles.
一种用于山地城市交通与广场共建的多层钢混框架桥的施工方法，步骤包括：A construction method for a multi-layer steel-concrete frame bridge for co-construction of mountainous urban traffic and squares, comprising the following steps:
1)参见图1，在施工准备工作完成后，先行施工支护桩11，再施工支护桩身顶部冠梁12及挡土背墙13，各个构件之间均应通过钢筋等进行预埋做搭接锚固。1) Referring to FIG. 1 , after the construction preparation work is completed, the support piles 11 are constructed first, and then the top crown beam 12 of the support pile body and the retaining back wall 13 are constructed. All components should be pre-buried with steel bars for overlap anchoring.
2)观测支护桩结构变形，做好监测。同时在工厂内加工制造装配式钢混组合梁中的顶层纵向钢梁31和中层顶层纵向钢梁41、顶层横向钢梁32和中层顶层横向钢梁42、顶层纵向分配钢梁34和中层顶层纵向分配钢梁44，并在钢梁顶部相应位置设抗剪连接栓钉。2) Observe the deformation of the support pile structure and monitor it. At the same time, the top longitudinal steel beam 31 and the middle top longitudinal steel beam 41, the top transverse steel beam 32 and the middle top transverse steel beam 42, the top longitudinal distribution steel beam 34 and the middle top longitudinal distribution steel beam 44 of the assembled steel-concrete composite beam are processed and manufactured in the factory, and shear connection bolts are set at the corresponding positions on the top of the steel beam.
3)开挖支护桩桩前土石方，按照逆作法施工桩间挡土板和中层装配式钢混组合梁4对应位置的支护桩间纵向混凝土连接梁9。确认变形不超限情况下安装冠梁顶部可适应空间变形的支承结构2。3) Excavate the earth and stone in front of the supporting piles, and construct the longitudinal concrete connecting beams 9 between the supporting piles at the corresponding positions of the retaining plates between the piles and the middle-layer assembled steel-concrete composite beams 4 according to the reverse construction method. Install the supporting structure 2 on the top of the crown beam that can adapt to the spatial deformation when the deformation is confirmed to be within the limit.
4)施工框架结构桩，同时注意预埋钢管立柱柱脚及桩柱连接件72。4) Construct the frame structure piles, and pay attention to pre-embed the steel pipe column foot and pile-column connectors 72.
5)现场吊装钢管立柱并安装就位，根据柱身预留接头连接装配式钢混组合梁中的顶层纵向钢梁31和中层顶层纵向钢梁41、顶层横向钢梁32和中层顶层横向钢梁42。5) The steel pipe columns are hoisted on site and installed in place, and the top longitudinal steel beam 31 and the middle top longitudinal steel beam 41, the top transverse steel beam 32 and the middle top transverse steel beam 42 in the assembled steel-concrete composite beam are connected according to the reserved joints on the column body.
6)现场分层吊装定位并安装顶层纵向分配钢梁34和中层顶层纵向分配钢梁44，安装完成后顶部设顶层现浇钢筋混凝土面板33和中层顶层现浇钢筋混凝土面板43。6) The top longitudinal distribution steel beam 34 and the middle top longitudinal distribution steel beam 44 are positioned and installed on site in layers. After installation, the top cast-in-place reinforced concrete panel 33 and the middle top cast-in-place reinforced concrete panel 43 are set on the top.
7)完成各层面板上方的铺装层施工。7) Complete the construction of the paving layer above each layer of panels.
实施例3：Embodiment 3:
一种实施例1所述的用于山地城市交通与广场共建的多层钢混框架桥，主要内容如下：A multi-layer steel-concrete frame bridge for mountainous urban transportation and square co-construction as described in Example 1, the main contents are as follows:
一种用于山地城市交通与广场共建的多层钢混框架桥，其特征在于：主要包括了支护桩体系1、可适应空间变形的支承结构2、顶层装配式钢混组合梁3，中层装配式钢混组合梁4、钢管框架柱5、梁柱节点区6、钢筋混凝土灌注桩7、防落梁及位移观测计8、支护桩间纵向混凝土连接梁9等组成。A multi-layer steel-concrete frame bridge for co-construction of mountain city traffic and squares is characterized by: mainly including a support pile system 1, a supporting structure that can adapt to spatial deformation 2, a top-layer assembled steel-concrete composite beam 3, a middle-layer assembled steel-concrete composite beam 4, a steel pipe frame column 5, a beam-column node area 6, reinforced concrete cast-in-place piles 7, an anti-fall beam and a displacement observation meter 8, and a longitudinal concrete connecting beam 9 between the support piles.
所述支护桩体系1包括了支护桩桩身11及支护桩顶部冠梁12、挡土背墙13。冠梁12、挡土背墙13均通过内部钢筋与支护桩紧密连接。The support pile system 1 includes a support pile body 11, a top beam 12 on the top of the support pile, and a retaining back wall 13. The top beam 12 and the retaining back wall 13 are tightly connected to the support pile through internal steel bars.
所述可适应空间变形的支承结构2包括可适应空间变形的支承底座21和橡胶支承22。可适应空间变形的支承底座21通过预埋螺栓与冠梁顶面浇筑在一起，橡胶支承22设置于可适应空间变形的支承底座21之上。The support structure 2 capable of adapting to spatial deformation comprises a support base 21 capable of adapting to spatial deformation and a rubber support 22. The support base 21 capable of adapting to spatial deformation is cast together with the top surface of the crown beam through embedded bolts, and the rubber support 22 is arranged on the support base 21 capable of adapting to spatial deformation.
所述顶层装配式钢混组合梁3包括纵向钢梁31、横向钢梁32、现浇钢筋混凝土面板33、纵向分配钢梁34、三角形刚性腋角板35、抗剪连接栓钉36。纵向钢梁31及横向钢梁32采用焊接或螺栓连接与钢管框架柱5连接在一起。在横向钢梁32之间设置纵向分配钢梁34，纵向分配钢梁34的翼缘板顶面设置抗剪连接栓钉36，现浇钢筋混凝土面板33通过抗剪连接栓钉36与纵向钢梁31及横向钢梁32浇筑在一起，形成钢混组合梁体系。The top-level assembled steel-concrete composite beam 3 includes a longitudinal steel beam 31, a transverse steel beam 32, a cast-in-place reinforced concrete panel 33, a longitudinal distribution steel beam 34, a triangular rigid axil plate 35, and a shear connection stud 36. The longitudinal steel beam 31 and the transverse steel beam 32 are connected to the steel pipe frame column 5 by welding or bolting. The longitudinal distribution steel beam 34 is arranged between the transverse steel beams 32, and the shear connection stud 36 is arranged on the top surface of the flange plate of the longitudinal distribution steel beam 34. The cast-in-place reinforced concrete panel 33 is cast together with the longitudinal steel beam 31 and the transverse steel beam 32 through the shear connection stud 36 to form a steel-concrete composite beam system.
所述中层装配式钢混组合梁4包括纵向钢梁41、横向钢梁42、现浇钢筋混凝土面板43、纵向分配钢梁44、三角形刚性腋角板45、抗剪连接栓钉46。纵向钢梁41及横向钢梁42采用焊接或螺栓连接与钢管框架柱5连接在一起。在横向钢梁42之间设置纵向分配钢梁44，纵向分配钢梁44的翼缘板顶面设置抗剪连接栓钉46，现浇钢筋混凝土面板43通过抗剪连接栓钉46与纵向钢梁41及横向钢梁42浇筑在一起，形成钢混组合梁体系。The middle-layer assembled steel-concrete composite beam 4 includes a longitudinal steel beam 41, a transverse steel beam 42, a cast-in-place reinforced concrete panel 43, a longitudinal distribution steel beam 44, a triangular rigid axil plate 45, and a shear connection stud 46. The longitudinal steel beam 41 and the transverse steel beam 42 are connected to the steel pipe frame column 5 by welding or bolting. The longitudinal distribution steel beam 44 is arranged between the transverse steel beams 42, and the shear connection stud 46 is arranged on the top surface of the flange plate of the longitudinal distribution steel beam 44. The cast-in-place reinforced concrete panel 43 is cast together with the longitudinal steel beam 41 and the transverse steel beam 42 through the shear connection stud 46 to form a steel-concrete composite beam system.
所述钢管框架柱5包括矩形钢管立柱51、立柱内隔板52、立柱内部灌注混凝土53、钢管框架柱顶盖板上的混凝土灌注孔54及混凝土灌注观测孔55。钢管立柱51在与梁体交接位置均在内部对应位置设置立柱内隔板52，立柱内隔板52采用焊接与矩形钢管立柱51联系成整体，同时为增强钢管框架柱抗压能力，在立柱内部灌注混凝土53，灌注混凝土可采用微膨胀混凝土，抵御混凝土一定的收缩变形，混凝土灌注通过灌注孔进行灌注，同时通过观测孔观测灌注饱满程度。The steel tube frame column 5 comprises a rectangular steel tube column 51, a column inner partition 52, concrete 53 poured inside the column, a concrete pouring hole 54 on the top cover of the steel tube frame column, and a concrete pouring observation hole 55. The steel tube column 51 is provided with a column inner partition 52 at a corresponding position inside the intersection with the beam body. The column inner partition 52 is connected to the rectangular steel tube column 51 by welding to form a whole. At the same time, in order to enhance the compressive capacity of the steel tube frame column, concrete 53 is poured inside the column. The poured concrete can be micro-expansion concrete to resist certain shrinkage and deformation of the concrete. The concrete is poured through the pouring hole, and the fullness of the pouring is observed through the observation hole.
所述梁柱节点区6包括拼接处腹板高强度螺栓连接61、拼接处顶板焊缝连接62、拼接处底板焊缝连接63、三角形刚性腋角板64。钢管框架柱与梁体交接位置设置梁柱节点区6，梁体翼缘板处拼接处顶板焊缝连接62及拼接处底板焊缝连接63、梁体腹板处设置拼接处腹板高强度螺栓连接61，为加强节点区刚性连接，在节点区的梁翼缘板下方设置三角形刚性腋角板64，三角形刚性腋角板64通过焊接与立柱连接成整体。The beam-column node area 6 includes a high-strength bolt connection 61 of the web at the splicing, a top plate weld connection 62 of the splicing, a bottom plate weld connection 63 of the splicing, and a triangular rigid axillary angle plate 64. The beam-column node area 6 is set at the intersection of the steel tube frame column and the beam body, the top plate weld connection 62 and the bottom plate weld connection 63 of the splicing at the beam body flange plate, and the web high-strength bolt connection 61 of the splicing is set at the beam body web. In order to strengthen the rigid connection of the node area, a triangular rigid axillary angle plate 64 is set below the beam flange plate in the node area, and the triangular rigid axillary angle plate 64 is connected to the column as a whole by welding.
所述钢筋混凝土灌注桩7包括桩身71、桩柱连接件72。桩身71采用钢筋混凝土灌注桩，桩身施工过程中，注意预埋钢管立柱柱脚及桩柱连接件72。桩柱连接件72采用了3种连接件，分别为抗剪连接钢板721、抗剪连接栓钉722、抗剪连接钢筋723。The reinforced concrete pile 7 includes a pile body 71 and a pile-column connector 72. The pile body 71 is a reinforced concrete pile. During the construction of the pile body, it is important to pre-embed the steel pipe column foot and the pile-column connector 72. The pile-column connector 72 uses three types of connectors, namely, a shear connection steel plate 721, a shear connection stud 722, and a shear connection steel bar 723.
所述防落梁及位移观测计8包括螺栓81、刚性加劲板82、位移观测计83、弹簧垫圈84。螺栓81预埋到支护桩体系中的冠梁混凝土内，螺栓周围设置弹簧垫圈84，螺栓螺帽位置处设刚性加劲板82，刚性加劲板82上同时设置位移观测计83，用以观测支护桩体系变形。所述支护桩间纵向混凝土连接梁9包括预埋连接螺栓91、植入化学锚栓92、纵向混凝土连接梁93。因支护桩间距与装配式钢混组合梁的横梁间距模数存在差异，在支护桩体系之间设置纵向混凝土连接梁93。装配式钢混组合梁的横梁端接触部位为支护桩时，采用植入化学锚栓92；装配式钢混组合梁的横梁端接触部位为纵向混凝土连接梁93时，采用预埋连接螺栓91。The anti-fall beam and displacement observation meter 8 include bolts 81, rigid stiffening plates 82, displacement observation meters 83, and spring washers 84. Bolts 81 are embedded in the crown beam concrete of the supporting pile system, spring washers 84 are arranged around the bolts, rigid stiffening plates 82 are arranged at the bolt nut positions, and displacement observation meters 83 are arranged on the rigid stiffening plates 82 to observe the deformation of the supporting pile system. The longitudinal concrete connecting beam 9 between the supporting piles includes embedded connecting bolts 91, implanted chemical anchors 92, and longitudinal concrete connecting beams 93. Due to the difference in the modulus between the supporting pile spacing and the beam spacing of the assembled steel-concrete composite beam, a longitudinal concrete connecting beam 93 is arranged between the supporting pile systems. When the beam end contact part of the assembled steel-concrete composite beam is the supporting pile, an implanted chemical anchor 92 is used; when the beam end contact part of the assembled steel-concrete composite beam is the longitudinal concrete connecting beam 93, an embedded connecting bolt 91 is used.
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