Box girder supporting structure capable of efficiently resisting shear lag

Abstract

The utility model discloses a box girder supporting structure capable of efficiently resisting shear lag, which belongs to the technical field of box girder supporting and is characterized by comprising a box girder body, an anti-shear component is arranged at the top of the box girder body, a supporting component is arranged at the bottom of the box girder body, and workers can support the box girder body through the anti-shear component at the top of the box girder body. When a worker supports the box girder support and the box girder bears gravity, the borne gravity can be quickly transmitted, so that the situation of lagging of gravity transmission at the edge is avoided, the phenomenon of local damage or overall instability of the top of the box girder is prevented, the stability of the whole box girder structure in a complex stress environment is improved, and the service life of the box girder structure is prolonged. According to the supporting structure for the box girder, the supporting structure can be used for supporting the box girder, then the supporting structure can be disassembled and maintained by workers through the supporting assembly, therefore, when the supporting structure is damaged, damaged parts can be rapidly replaced, and the overall practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of box girder support technology, and in particular to a highly efficient box girder support structure that resists shear lag. Background Technology

[0002] Box girders possess high bending and torsional stiffness. In bridge structures, they can effectively withstand bending moments generated by vertical loads such as vehicles, pedestrians, and the weight of the structure itself. For example, in long-span bridges, the top and bottom plates of the box girder can resist the tensile and compressive forces generated by bending moments. In some cross-sea bridges with spans of several kilometers, the load-bearing characteristics of box girders enable them to withstand enormous vertical loads without excessive deformation. At the same time, the box structure of the box girder provides good torsional resistance to resist torque generated by lateral wind forces, seismic forces, etc., ensuring the stability of the bridge under complex loads.

[0003] During the construction of the substructure of the three-dimensional transportation system, the box girder needs to be supported by a support structure. The existing support structure has a large span, and the large cross-border portal structure increases the safety risk of the project. Therefore, the steel box girder installation bracket in the relevant technology has problems such as slow construction progress, consumption of a large number of brackets, and high construction safety risks.

[0004] Currently, Chinese utility model patent CN219547568U discloses a box girder support structure, relating to the technical field of bridge support structure related equipment. It includes a pile assembly, a column vertical support assembly, a clamp assembly, unloading blocks, and a crossbeam. One end of the pile assembly is connected to the column vertical support assembly, and the other end of the pile assembly is used to insert into the soil. The end of the column vertical support assembly away from the pile assembly is connected to the clamp assembly. The end of the clamp assembly away from the column vertical support assembly is used to connect to the crossbeam via unloading blocks. At least four unloading blocks are provided, and the unloading blocks are spaced apart on both sides of the crossbeam connection. This utility model alleviates the technical problem in the prior art where the large span of the support points in the box girder support structure increases the project construction safety risk.

[0005] To address the aforementioned issues, existing patents offer solutions. When workers support box girders, the existing box girder supports are mainly achieved through piers and pile foundations. Therefore, when the box girder bears gravity, the gravity near the web is transmitted quickly, while the gravity transmission at the edges is relatively delayed, resulting in a significant shear lag effect. This makes it unsuitable for use when supporting box girders.

[0006] To address this, a highly efficient shear lag-resistant box girder support structure is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a highly efficient shear lag-resistant box girder support structure, which can solve the problem that existing box girder supports are mainly achieved through piers and pile foundations. Therefore, when the box girder is under load, the gravity near the web is transmitted quickly, while the gravity transmission at the flange edge is relatively delayed, resulting in a significant shear lag effect, which is not conducive to the use of box girder supports.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency shear lag-resistant box girder support structure, comprising a box girder body, wherein a shear-resistant component is provided at the top of the box girder body, and a support component is provided at the bottom of the box girder body;

[0009] The shear-resistant component includes a support box, a convex plate, a connecting column, a connecting rod, and a support plate. The support box is bolted to the top of the box girder body. A convex plate is bolted to the inner side of the support box. A connecting column is bolted to the top of each convex plate. A connecting rod is bolted to the top of each connecting column. A support plate is bolted to the top of each connecting rod. The top of the support plate is bolted to the top of the inner side of the support box.

[0010] Preferably, the support assembly includes an upper connecting seat, which is fixedly connected to the bottom of the box girder body. A lower connecting seat is provided at the bottom of the upper connecting seat. Threaded rods are threadedly connected to the inner sides of the upper and lower connecting seats. A bearing platform is bolted to the bottom of the lower connecting seat, and a pile foundation is fixedly connected to the bottom of the bearing platform.

[0011] Preferably, a rubber post is bonded to the bottom of the upper connecting seat, and a mounting ring is bonded to the top of the lower connecting seat, with the rubber post snapped into the inner side of the mounting ring.

[0012] Preferably, a reinforcing plate is bolted to the outer side of the bearing platform, and a reinforcing rod is bolted to the top of each reinforcing plate. The top of the reinforcing rod is bolted to the bottom of the box girder body.

[0013] Preferably, a connecting plate is bolted to the bottom of the reinforcing plate, and a crossbar is bolted to the inner side of the connecting plate, and the crossbar is bolted to the outer side of the pile foundation.

[0014] Preferably, a weight-adding block is bolted to the bottom of the pile foundation, and the weight-adding block is a square concrete block.

[0015] Preferably, the outer side of the box girder body is coated with a protective layer, which is cement mortar.

[0016] Preferably, a crossbeam is fixedly connected to the inner side of the box girder body, and a cross plate is fixedly connected to the outer side of each crossbeam.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By setting up shear-resistant components, this application can enable the rapid transfer of gravity when the box girder is supported by workers and when the box girder is under gravity, thereby avoiding the lag in gravity transfer at the edges, preventing local damage or overall instability at the top of the box girder, and improving the stability of the entire box girder structure under complex stress environments. Therefore, it is beneficial to use when supporting box girders.

[0019] 2. By setting up support components, this application enables workers to disassemble and maintain the support structure. Therefore, when the support structure is damaged, the damaged parts can be quickly replaced, thereby improving the overall practicality and meeting the needs of workers. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the efficient shear lag-resistant box girder support structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the shear-resistant component of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the support component of this utility model;

[0023] Figure 4 This is a schematic diagram of the connecting plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the box girder body of this utility model.

[0025] In the diagram, 1. Box girder body; 2. Shear-resistant component; 201. Support box; 202. Convex plate; 203. Connecting column; 204. Connecting rod; 205. Support plate; 3. Support component; 301. Upper connecting seat; 302. Lower connecting seat; 303. Threaded rod; 304. Bearing platform; 305. Pile foundation; 4. Rubber column; 5. Mounting ring; 6. Reinforcing plate; 7. Reinforcing rod; 8. Connecting plate; 9. Crossbar; 10. Weighting block; 11. Protective layer; 12. Crossbeam; 13. Horizontal plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5The present invention provides the following technical solution:

[0028] A high-efficiency shear lag-resistant box girder support structure includes a box girder body 1, a shear-resistant component 2 is provided at the top of the box girder body 1, and a support component 3 is provided at the bottom of the box girder body 1.

[0029] The shear-resistant component 2 includes a support box 201, a convex plate 202, a connecting column 203, a connecting rod 204, and a support plate 205. The support box 201 is bolted to the top of the box girder body 1. The inner side of the support box 201 is bolted with the convex plate 202. The top of the convex plate 202 is bolted with the connecting column 203. The top of the connecting column 203 is bolted with the connecting rod 204. The top of the connecting rod 204 is bolted with the support plate 205. The top of the support plate 205 is bolted to the top of the inner side of the support box 201.

[0030] In this embodiment: by setting up a box girder body 1, a shear-resistant component 2, and a support component 3, the shear-resistant component 2 at the top of the box girder body 1 allows workers to quickly transfer the weight of the box girder when it is under load, thus avoiding lag in the transfer of weight at the edges and preventing local damage or overall instability at the top of the box girder. This improves the stability of the entire box girder structure under complex stress environments and is therefore beneficial for supporting the box girder. The support component 3 facilitates the disassembly and maintenance of the support structure, allowing for quick replacement of damaged parts when they are damaged, thereby improving overall practicality and meeting the needs of workers.

[0031] Specifically, such as Figure 1 , Figure 3 As shown, the support component 3 includes an upper connecting seat 301, which is fixedly connected to the bottom of the box girder body 1. A lower connecting seat 302 is provided at the bottom of the upper connecting seat 301. A threaded rod 303 is threadedly connected to the inner side of the upper connecting seat 301 and the lower connecting seat 302. A bearing platform 304 is bolted to the bottom of the lower connecting seat 302. A pile foundation 305 is fixedly connected to the bottom of the bearing platform 304.

[0032] Specifically, such as Figure 3 As shown, a rubber post 4 is bonded to the bottom of the upper connecting seat 301, and an mounting ring 5 is bonded to the top of the lower connecting seat 302. The rubber post 4 is snapped into the inner side of the mounting ring 5.

[0033] Specifically, such as Figure 1 , Figure 4 As shown, a reinforcing plate 6 is bolted to the outside of the bearing platform 304, and a reinforcing rod 7 is bolted to the top of each reinforcing plate 6. The top of the reinforcing rod 7 is bolted to the bottom of the box girder body 1.

[0034] In this embodiment, by setting up an upper connecting seat 301, a lower connecting seat 302, a threaded rod 303, a bearing platform 304, a pile foundation 305, a rubber column 4, an mounting ring 5, a reinforcing plate 6, and a reinforcing rod 7, the worker connects the upper connecting seat 301 to the lower connecting seat 302 on top of the bearing platform 304 at the top of the pile foundation 305 via the threaded rod 303. This facilitates the worker's disassembly and maintenance of the support structure. Therefore, when the support structure is damaged, the damaged parts can be quickly replaced, thereby improving the overall practicality and meeting the worker's needs. By setting up the rubber column 4 and the mounting ring 5, a buffering effect can be achieved when the structure is under stress, reducing the rigid impact between the upper and lower connecting seats 302. At the same time, it can also adapt to displacement caused by temperature changes and minor structural deformations to a certain extent, improving the stability and durability of the connection. By setting up the reinforcing plate 6 and the reinforcing rod 7, the overall stability of the structure can be improved, preventing structural instability due to excessive local stress, and helping to resist the adverse effects of various complex loads.

[0035] Specifically, such as Figure 1 , Figure 4 As shown, a connecting plate 8 is bolted to the bottom of the reinforcing plate 6, and a crossbar 9 is bolted to the inner side of the connecting plate 8. The crossbar 9 is bolted to the outer side of the pile foundation 305.

[0036] Specifically, such as Figure 1 , Figure 4 As shown, a weighting block 10 is bolted to the bottom of pile foundation 305. The weighting block 10 is a square concrete block.

[0037] In this embodiment: by setting the connecting plate 8 and the crossbar 9, a more stable whole can be achieved, ensuring that the load can be reliably transferred from the box girder body 1 to the pile foundation 305. By setting the weight-adding block 10, the weight at the bottom of the pile foundation 305 can be increased, thereby improving the stability of the entire structure and preventing the structure from slipping or overturning.

[0038] Specifically, such as Figure 1 , Figure 5 As shown, the outer side of the box girder body 1 is coated with a protective layer 11, which is cement mortar.

[0039] Specifically, such as Figure 1 , Figure 5 As shown, a crossbeam 12 is fixedly connected to the inner side of the box girder body 1, and a cross plate 13 is fixedly connected to the outer side of the crossbeam 12.

[0040] In this embodiment: by setting the protective layer 11, it is possible to prevent external environmental factors such as rainwater erosion and chemical corrosion from damaging the box girder body 1 and extend the service life of the box girder. By setting the crossbeam 12 and the cross plate 13, the crossbeam 12 can enhance the rigidity of the box girder in the lateral direction, and the cross plate 13 can assist the crossbeam 12 in playing the role of dividing the internal space of the box girder and strengthening the overall structure.

[0041] Working principle: When the staff supports the box girder, the support box 201 transmits the load from above or other directions to the connecting column 203 through the connecting rod 204 at the bottom of the support plate 205. Then, the stress is more evenly distributed in the top area through the convex plate 202, which significantly reduces shear lag. Therefore, when the box girder is under load, the load can be quickly transmitted, avoiding the lag in the transmission of load at the edges. This prevents local damage or overall instability at the top of the box girder and improves the stability of the entire box girder structure under complex stress environments. Therefore, it is convenient to use when supporting the box girder. Then, the staff connects the upper connecting seat 301 to the lower connecting seat 302 at the top of the bearing platform 304 of the pile foundation 305 through the threaded rod 303. This allows the staff to disassemble and maintain the support structure. Therefore, when the support structure is damaged, the damaged parts can be quickly replaced, thereby improving the overall practicality and meeting the needs of the staff.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency shear lag-resistant box girder support structure, comprising a box girder body (1), characterized in that: The top of the box girder body (1) is provided with a shear-resistant component (2), and the bottom of the box girder body (1) is provided with a support component (3); The shear-resistant component (2) consists of a support box (201), a convex plate (202), a connecting column (203), a connecting rod (204), and a support plate (205). The support box (201) is bolted to the top of the box girder body (1). The inner side of the support box (201) is bolted with a convex plate (202). The top of the convex plate (202) is bolted with a connecting column (203). The top of the connecting column (203) is bolted with a connecting rod (204). The top of the connecting rod (204) is bolted with a support plate (205). The top of the support plate (205) is bolted to the top of the inner side of the support box (201).

2. The high-efficiency shear lag-resistant box girder support structure according to claim 1, characterized in that: The support assembly (3) includes an upper connecting seat (301), which is fixedly connected to the bottom of the box girder body (1). A lower connecting seat (302) is provided at the bottom of the upper connecting seat (301). A threaded rod (303) is threadedly connected to the inner side of the upper connecting seat (301) and the lower connecting seat (302). A bearing platform (304) is bolted to the bottom of the lower connecting seat (302). A pile foundation (305) is fixedly connected to the bottom of the bearing platform (304).

3. The efficient shear lag-resistant box girder support structure according to claim 2, characterized in that: A rubber post (4) is bonded to the bottom of the upper connecting seat (301), and an installation ring (5) is bonded to the top of the lower connecting seat (302). The rubber post (4) is snapped into the inner side of the installation ring (5).

4. The efficient shear lag-resistant box girder support structure according to claim 2, characterized in that: A reinforcing plate (6) is bolted to the outside of the bearing platform (304), and a reinforcing rod (7) is bolted to the top of each reinforcing plate (6). The top of the reinforcing rod (7) is bolted to the bottom of the box girder body (1).

5. The efficient shear lag-resistant box girder support structure according to claim 4, characterized in that: The bottom of the reinforcing plate (6) is bolted with a connecting plate (8), and the inner side of the connecting plate (8) is bolted with a crossbar (9), which is bolted to the outer side of the pile foundation (305).

6. The efficient shear lag-resistant box girder support structure according to claim 2, characterized in that: The bottom of the pile foundation (305) is bolted with a weighting block (10), which is a square concrete block.

7. The efficient shear lag-resistant box girder support structure according to claim 1, characterized in that: The outer side of the box girder body (1) is coated with a protective layer (11), which is cement mortar.

8. The efficient shear lag-resistant box girder support structure according to claim 1, characterized in that: A crossbeam (12) is fixedly connected to the inner side of the box girder body (1), and a cross plate (13) is fixedly connected to the outer side of the crossbeam (12).

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