Total variable cross-section box girder bridge No.0 block supporting truss and supporting system

Abstract

The utility model provides a total variable cross-section box girder bridge No.0 block supporting truss which comprises a plurality of rows of vertical supporting structures arranged at intervals in the longitudinal direction of a bridge, and each row of vertical supporting structures comprises a plurality of vertical supports arranged at intervals in the transverse direction of the bridge. Each vertical support comprises an unloading block and a vertical rod fixedly arranged at the top end of the unloading block; in the same row of vertical supports, every two adjacent vertical supports are fixedly connected through a first connecting rod; every two adjacent rows of vertical supporting structures are fixedly connected through a plurality of second connecting rods. The utility model has the advantage of convenience in assembly and disassembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field especially relates to a full variable cross section box girder bridge 0 block support truss and support system. BACKGROUND

[0002] Under the background of the good development of social economy, all circles put forward higher requirements to the bridge construction quality, and the construction scale of the bridge is gradually expanding, the traditional prefabricated box girder is difficult to adapt to the construction environment of large span, and at present, the widely used is large span cast-in-situ prestressed box girder, which has important role for increasing the span of the bridge, ensuring the stability of the whole bridge and improving the vehicle passing capacity.

[0003] 0 block is the starting section of the continuous bridge using cantilever pouring construction, is the benchmark of the subsequent hanging basket cast-in-place construction stage, and is the key to ensure the cantilever pouring quality of the continuous bridge. The 0 block construction support generally uses full steel pipe support, but the large span cast-in-situ prestressed box girder is usually full variable cross section box girder, and the 0 block construction support area has the conditions of multiple support section changes and short vertical support distance. At this time, it is difficult to set up the disc type scaffold, therefore, the 0 block support area often has the defects of difficult support structure erection and long construction time. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a full variable cross section box girder bridge 0 block support truss and support system to solve the defects of difficult support structure erection and long construction time of the existing full variable cross section box girder bridge 0 block support area.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme of a full variable cross section box girder bridge 0 block support truss, which has the structural characteristics that multiple rows of vertical support structures are arranged along the longitudinal direction of the bridge, each row of vertical support structure includes multiple vertical supports arranged along the transverse direction of the bridge.

[0006] Each vertical support includes a falling block and a vertical rod fixedly arranged at the top end of the falling block.

[0007] In the same row of vertical supports, the adjacent two vertical supports are fixedly connected through a first connecting rod, and the adjacent two rows of vertical support structures are fixedly connected through multiple second connecting rods.

[0008] The above-mentioned support truss is fixedly connected by the vertical support structure and the connecting rod, which is convenient to erect, the height of the vertical support structure can be adjusted according to the actual situation of the variable cross section of the box girder to adapt to the change form of the section, and the support truss is convenient to build and disassemble, thereby improving the construction efficiency.

[0009] Further, multiple groups of reinforcing rods are arranged along the longitudinal direction of the bridge, and each group of reinforcing rod is fixedly connected with the corresponding row of vertical support structure.

[0010] Further, each group of reinforcing rods comprises two or more third connecting rods arranged vertically and spaced apart.

[0011] Further, the longitudinal spacing between two adjacent groups of reinforcing rods ranges from 2m to 3m.

[0012] Further, in the same row of vertical supports, the bottom and top of two adjacent vertical supports are fixedly connected by a first connecting rod.

[0013] Further, the bottom and top of two adjacent rows of vertical support structures are fixedly connected by a plurality of second connecting rods.

[0014] Further, the longitudinal spacing between two adjacent rows of vertical support structures ranges from 0.4m to 0.8m.

[0015] Further, in the same row of vertical supports, the lateral spacing between two adjacent vertical supports ranges from 0.4m to 0.8m.

[0016] Further, the unloading block is an I-beam.

[0017] Based on the same inventive concept, the utility model also provides a full variable cross-section box girder bridge 0 block support system, including steel pipe pile structure and support beam structure of fixed establishment in the top of steel pipe pile structure, its structural characteristics is, the top of support beam structure is fixedly provided with above-mentioned support truss.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] First, the utility model has the advantages of convenient assembly and disassembly, convenient and fast assembly process, no special process is needed, only welding fixation is needed, since the weight of each component is lighter, operation is simple, large hoisting equipment is not needed, so that the on-site construction is more convenient, after use, each component can be conveniently disassembled, convenient to carry and store, saves time and cost for the disassembly and reassembly of the building.

[0020] Second, the utility model is durable and can be reused, the support truss is composed of steel, is durable, can bear a large load, and can be repeatedly used, and is particularly suitable for occasions that need to be frequently disassembled and reassembled.

[0021] Third, the utility model has high strength and good stability, each component is fixedly connected to form a whole, is firm and reliable, can guarantee the stability of the structure under the change of environment such as wind and rain, the height of each row of stand column can be set according to actual needs, effectively enhances the flexibility of the support truss, improves the bottom mold lap density, and thus improves the structural stability and construction quality.

[0022] The truss stress mode is reasonable, the material selection is economical, the comprehensive cost advantage is obvious, the on-site workload is small, and the construction speed is fast. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Figure 1 is a longitudinal structure schematic view of a full variable cross-section box girder bridge 0 block support truss according to the present utility model;

[0024] Figure 2 Figure 2 is a transverse structure schematic view of a full variable cross-section box girder bridge 0 block support truss according to the present utility model.

[0025] In the drawings:

[0026] 1, unloading block; 2, vertical rod; 3, first connecting rod; 4, second connecting rod; 5, third connecting rod; H, height of vertical rod; L1, transverse spacing of adjacent two vertical supports in the same row of vertical support; L2, longitudinal spacing of adjacent two rows of vertical support structures; L3, longitudinal spacing of adjacent two groups of reinforcing rods. DETAILED DESCRIPTION

[0027] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that the embodiments in the present utility model and the features in the embodiments can be combined with each other without conflict. For the sake of convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only mean consistent with the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

[0028] As shown in Figures 1-2 , a full variable cross-section box girder bridge 0 block support truss of the present embodiment comprises multiple rows of vertical support structures which are arranged at intervals along the longitudinal direction of the bridge, and each row of vertical support structure comprises multiple vertical supports which are arranged at intervals along the transverse direction of the bridge.

[0029] Each vertical support comprises an unloading block 1 and a vertical rod 2 which is fixedly arranged at the top end of the unloading block 1.

[0030] In the same row of vertical supports, the adjacent two vertical supports are fixedly connected through a first connecting rod 3; the adjacent two rows of vertical support structures are fixedly connected through multiple second connecting rods 4.

[0031] As shown in Figure 1 , multiple groups of reinforcing rods are arranged at intervals along the longitudinal direction of the bridge, and each group of reinforcing rod is fixedly connected with a corresponding row of vertical support structure. Each group of reinforcing rod comprises two or more vertical third connecting rods 5 which are arranged at intervals. The longitudinal spacing L3 of the adjacent two groups of reinforcing rods is in the range of 2m to 3m.

[0032] Specifically, in the embodiment, the support truss comprises a falling block 1, a vertical rod 2, a first connecting rod 3, a second connecting rod 4 and a fifth connecting rod 5. The vertical rod 2, the first connecting rod 3 and the second connecting rod 3 are welded to form a truss main body structure, the third connecting rod is arranged longitudinally and spaced apart, the falling block 1 is arranged under the vertical rod 2, the falling block 1 is made of an I-beam, the length of the falling block 1 is 20 cm, the height H of the vertical rod 2 can be adjusted according to the actual situation on site, and the truss is unloaded by cutting the web of the I-beam.

[0033] In the embodiment, the vertical rod 2, the first connecting rod 3, the second connecting rod 4 and the third connecting rod 5 are all square steel pipes.

[0034] As shown in Figure 2 In the same row of vertical supports, the bottom and the top of the two adjacent vertical supports are fixedly connected by the first connecting rod 3.

[0035] As shown in Figure 1 The bottom and the top of the two adjacent rows of vertical support structures are fixedly connected by a plurality of second connecting rods 4.

[0036] As shown in Figure 1 The longitudinal spacing L2 between the two adjacent rows of vertical support structures is 0.4 m to 0.8 m.

[0037] As shown in Figure 2 In the same row of vertical supports, the transverse spacing L1 between the two adjacent vertical supports is 0.4 m to 0.8 m.

[0038] As shown in Figure 1 In the embodiment, the falling block 1 is an I-beam.

[0039] The embodiment also provides a full variable cross-section box girder bridge No. 0 block support system, which comprises a steel pipe pile structure and a support beam structure fixedly arranged at the top end of the steel pipe pile structure, and the top end of the support beam structure is fixedly provided with the support truss.

[0040] The full variable cross-section box girder bridge No. 0 block support system of the embodiment has the following specific construction steps:

[0041] S1, steel pipe pile structure construction, after the completion of the steel pipe pile column foundation, the main cross beam at the top of the column is constructed, the main longitudinal beam is arranged on the main cross beam along the bridge direction, the distribution beam is arranged on the main longitudinal beam in the transverse direction of the bridge, and the No. 0 block support truss is installed on the distribution beam.

[0042] S2, the support truss is provided with a falling block, the falling block is fixedly arranged on the distribution beam by welding, the vertical rod and the connecting rod of the support truss main body structure are welded by 80*4 mm square steel pipes, the height H of the column can be adjusted according to the actual situation on site, and the components are connected by welding. The truss is unloaded by cutting the web of the I-beam falling block.

[0043] The above-mentioned embodiments should be understood as merely for the purpose of more clearly illustrating the present application, and are not used to limit the scope of the present application. After reading the present application, various equivalent modifications of the present embodiments made by those skilled in the art all fall within the scope defined by the appended claims of the present application.

Claims

1. A full transverse section box girder bridge No. 0 block support truss, characterized by, The vertical support structure comprises a plurality of rows of vertical supports arranged along the longitudinal direction of the bridge, and each row of vertical supports comprises a plurality of vertical supports arranged along the transverse direction of the bridge; Each vertical support comprises a falling block (1) and a vertical rod (2) fixed to the top end of the falling block (1); In the same row of vertical supports, two adjacent vertical supports are fixedly connected through a first connecting rod (3); Two adjacent rows of vertical support structures are fixedly connected through a plurality of second connecting rods (4).

2. The total variation section box girder bridge No. 0 block support truss according to claim 1, characterized by, A plurality of groups of reinforcing rods are arranged along the longitudinal direction of the bridge, and each group of reinforcing rods is fixedly connected with a corresponding row of vertical support structures.

3. The total variation section box girder bridge No. 0 block support truss according to claim 2, characterized by, Each group of reinforcing rods comprises two or more third connecting rods (5) arranged vertically.

4. The total variation section box girder bridge No. 0 block support truss according to claim 2, characterized by, The longitudinal distance (L3) between two adjacent groups of reinforcing rods ranges from 2m to 3m.

5. The total variation section box girder bridge No. 0 block support truss according to claim 1, characterized by, In the same row of vertical supports, the bottom and top of two adjacent vertical supports are fixedly connected through a first connecting rod (3).

6. The total variation section box girder bridge No. 0 block support truss according to claim 1, characterized by, The bottom and top of two adjacent rows of vertical support structures are fixedly connected through a plurality of second connecting rods (4).

7. The total variation section box girder bridge No. 0 block support truss according to any one of claims 1-6, characterized by, The longitudinal distance (L2) between two adjacent rows of vertical support structures ranges from 0.4m to 0.8m.

8. The total variation section box girder bridge No. 0 block support truss according to any one of claims 1-6, characterized by, In the same row of vertical supports, the transverse distance (L1) between two adjacent vertical supports ranges from 0.4m to 0.8m.

9. A total variation section box girder bridge No. 0 block support truss according to any one of claims 1-6, characterized in that, The falling block (1) is an I-beam.

10. A full transverse section box girder bridge No. 0 block support system comprising a steel pipe pile structure and a support beam structure fixedly provided at a top end of the steel pipe pile structure, characterized in that, The top end of the support beam structure is fixedly provided with the support truss according to any one of claims 1-9.

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