A prefabricated bridge connecting device

Abstract

This utility model discloses a prefabricated bridge connection device, which includes a base, a pier column fixedly connected to the upper surface of the base, a cap beam fixedly connected to the top of the pier column, a support rod fixedly connected to the upper surface of the cap beam, an overlapping platform fixedly connected to the end of the support rod, two symmetrically arranged support plates fixedly connected to the upper surface of the cap beam, two symmetrically arranged tie rods fixedly connected to the lower surface of the two support plates, multiple positioning blocks fixedly connected to the outside of the tie rods, and the multiple positioning blocks being fixedly connected to each other by elastic elements, and a buffer column fixedly connected to the upper surface of the support plate. Through the above structure, a box-shaped structure is formed by the rigid connection of the double support plates, steel plates, and overlapping platforms, which can enhance the lateral bending stiffness. The tie rods and positioning blocks compensate for construction errors through elastic elements. The overall structure, through the combination of rigid connection and elastic buffer, improves seismic performance and stability while ensuring structural strength.

Description

Technical Field

[0001] This utility model relates to the field of bridge connection technology, and in particular to a prefabricated bridge connection device. Background Technology

[0002] With social progress and increased public awareness of environmental protection, the construction environment of bridges is receiving increasing attention from the government and the public, especially for core urban bridges. Construction period, construction noise pollution, and traffic congestion are becoming primary considerations in bridge design. Prefabricated bridge connection devices are structural devices used to connect various parts of a bridge, primarily for the assembly and fixing of prefabricated bridges. For example, Chinese patent 202320497238.4 (application number CN202320497238.4) uses anchor bolts for limiting and fixing, achieving prefabricated assembly. Compared to concrete pouring, this reduces the construction period and improves construction efficiency. However, it lacks buffer and reinforcement mechanisms, resulting in insufficient seismic resistance and stability. Under lateral external forces, this can cause uncontrollable displacement of the bridge structure, accelerating structural damage and potentially leading to collapse. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a prefabricated bridge connection device. The box-shaped structure is formed by the rigid connection of double bearing plates, steel plates and overlapping platforms, which can enhance the lateral bending stiffness. The tie rods and positioning blocks compensate for construction errors through elastic elements. The overall structure improves seismic performance and stability while ensuring structural strength through the combination of rigid connection and elastic buffer.

[0004] This utility model also provides a prefabricated bridge connection device as described above, comprising: a base, a pier column fixedly connected to the upper surface of the base, multiple longitudinal reinforcement bars fixedly connected inside the pier column, stirrups fixedly connected to the outside of the multiple longitudinal reinforcement bars, a cap beam fixedly connected to the top of the pier column, a support rod fixedly connected to the upper surface of the cap beam, an overlapping platform fixedly connected to the end of the support rod, two symmetrically arranged receiving plates fixedly connected to the upper surface of the cap beam, the two receiving plates being fixedly connected to each other by steel plates; two symmetrically arranged tie rods fixedly connected to the lower surface of the two receiving plates, the bottom of the two tie rods being fixedly connected to the base, multiple positioning blocks fixedly connected to the outside of the tie rods, the multiple positioning blocks being fixedly connected to each other by elastic elements, a buffer column fixedly connected to the upper surface of the receiving plate, the top of the buffer column being fixedly connected to the overlapping platform. The box-shaped structure is formed by the rigid connection of double-bearing plates, steel plates and overlapping platforms, which can enhance the lateral bending stiffness. The tie rods and positioning blocks compensate for construction errors through elastic elements. The overall structure improves seismic performance and stability while ensuring structural strength through the combination of rigid connection and elastic buffer.

[0005] According to the prefabricated bridge connection device of this utility model, the two tie rods have identical external structures, and the elastic element is located outside the tie rods. The tie rods connect the support block and the base, and the elastic element absorbs vibration energy.

[0006] According to the prefabricated bridge connection device of this utility model, a top column is fixedly connected to the upper surface of the steel plate, and the upper surface of the top column is fixed to the overlapping platform. The steel plate reinforces the cap beam, and the top column supports the overlapping platform.

[0007] According to the prefabricated bridge connection device of this utility model, there are multiple support rods that overlap each other sequentially, and the multiple support rods are arranged along the inclined direction. The overlap of multiple inclined support rods forms a triangular stable structure, which converts the lateral load into truss internal force through axial force and transmits it to the pier and foundation.

[0008] According to the prefabricated bridge connection device of this utility model, the overlapping platform has an internal groove, and the cross-section of the overlapping platform is a platform structure that gradually decreases from top to bottom. The platform structure with a gradually decreasing cross-section from top to bottom forms a wedge-shaped force-bearing surface, which can distribute the load transmitted by the support rod more evenly to the load-bearing surface of the cap beam.

[0009] According to the prefabricated bridge connection device of this utility model, the lap joint is provided with a plurality of reinforcing bars, which are arranged in a cross shape. The cross-shaped reinforcing bars form a two-way steel mesh, which can resist longitudinal shear force and lateral bending moment simultaneously.

[0010] According to the prefabricated bridge connection device of this utility model, the lower surface of the base is fixedly connected to pile foundations, and there are multiple pile foundations arranged in an array at equal intervals. The equally spaced pile group forms a stable support surface, which can significantly resist the overturning moment generated by the lateral wind load and seismic action of the bridge.

[0011] According to the prefabricated bridge connection device of this utility model, a T-shaped plate is fixedly connected to the side surface of the base. The T-shaped plate is arranged along the inclined direction and cooperates with the pile foundation. This can improve the stability of the overall structure.

[0012] Beneficial effects: Compared with existing technologies, this new type of prefabricated bridge connection device forms a box-shaped structure through the rigid connection of double bearing plates, steel plates and overlapping platforms, which can enhance the lateral bending stiffness. The tie rods and positioning blocks compensate for construction errors through elastic elements. The overall structure improves seismic performance and stability while ensuring structural strength through the combination of rigid connection and elastic buffer. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a complete structural diagram of the prefabricated bridge connection device of this utility model;

[0015] Figure 2 This is a cross-sectional view of the prefabricated bridge connection device of this utility model;

[0016] Figure 3 This is a diagram of the internal structure of the pier column of the prefabricated bridge connection device of this utility model;

[0017] Figure 4 This is a structural diagram of the receiving plate and steel plate of the prefabricated bridge connection device of this utility model;

[0018] Figure 5 This utility model relates to a prefabricated bridge connection device. Figure 1 Partial structural diagram at point A in the middle.

[0019] Legend:

[0020] 1. Base; 2. Pier; 3. Longitudinal reinforcement; 4. Stirrups; 5. Cap beam; 6. Support rod; 7. Lap joint; 8. Support plate; 9. Steel plate; 10. Tie rod; 11. Positioning block; 12. Elastic element; 13. Buffer column; 14. Top column; 15. Reinforcing bar; 16. Pile foundation; 17. T-shaped plate. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-5 This utility model provides an assembly bridge connection device, which includes: a base 1, a pier 2 fixedly connected to the upper surface of the base 1, multiple longitudinal bars 3 fixedly connected inside the pier 2, stirrups 4 fixedly connected to the outside of the multiple longitudinal bars 3, a cap beam 5 fixedly connected to the top of the pier 2, a support rod 6 fixedly connected to the upper surface of the cap beam 5, multiple support rods 6 are arranged in sequence and overlap each other, the multiple support rods 6 are arranged along the inclined direction, and an overlap platform 7 is fixedly connected to the end of the support rod 6. Two symmetrically arranged support plates 8 are fixedly connected to the upper surface of the cap beam 5, the two support plates 8 are fixedly connected to each other by a steel plate 9, and a top column 14 is fixedly connected to the upper surface of the steel plate 9. The upper surface of the top column 14 is fixed to the overlap platform 7.

[0023] Specifically, the longitudinal reinforcement 3 and the stirrups 4 form a composite reinforcement system. The longitudinal reinforcement 3 bears the axial pressure, and the stirrups 4 restrain the concrete and resist the shear force. The cap beam 5 distributes the load transmitted by the support rod 6 to the base 1 through the pier column 2. The double bearing plate 8 and the steel plate 9 form a rigid node to enhance the lateral stability. The inclined support rod 6 forms a spatial truss structure to effectively transmit the bridge deck load.

[0024] Two symmetrically arranged tie rods 10 are fixedly connected to the lower surfaces of the two support plates 8. The bottom of the two tie rods 10 is fixedly connected to the base 1. The two tie rods 10 have the same external structure. The elastic element 12 is located outside the tie rod 10. Multiple positioning blocks 11 are fixedly connected to the outside of the tie rod 10. The multiple positioning blocks 11 are fixedly connected to each other through the elastic element 12. A buffer column 13 is fixedly connected to the upper surface of the support plate 8. The top of the buffer column 13 is fixedly connected to the overlapping platform 7. The overlapping platform 7 has a groove inside. The cross-section of the overlapping platform 7 is a platform structure that gradually decreases from top to bottom. Several reinforcing ribs 15 are arranged inside the overlapping platform 7. The several reinforcing ribs 15 are arranged in a cross shape.

[0025] Specifically, a stable support system is formed by the double tie rods 10 to effectively resist the overturning moment generated by the cap beam 5. The buffer column 13 is made of a composite material of rubber and steel, which can absorb the impact energy of the vehicle. The cross-shaped reinforcing bars 15 of the overlapping platform 7 form a two-way steel mesh, which can resist longitudinal shear force and lateral bending moment at the same time.

[0026] The lower surface of the base 1 is fixedly connected to a pile foundation 16. There are multiple pile foundations 16, which are arranged in an array at equal intervals. The side surface of the base 1 is fixedly connected to a T-shaped plate 17. The T-shaped plate 17 is set along the inclined direction, and the T-shaped plate 17 cooperates with the pile foundation 16.

[0027] Specifically, multiple piles 16 are arranged in an array at equal intervals below the base 1, and together with the T-shaped plate 17, the device's resistance to lateral forces can be improved, thereby further enhancing the overall bearing stability.

[0028] Working principle: First, the pile foundation 16 is driven into the foundation. The pier column adopts a composite reinforcement method of longitudinal bars 3 and stirrups 4. The precast pier column 2 and the base 1 are fixedly connected to form the main load-bearing body. The cap beam 5 and the pier column 2 are fixedly connected to form the main transverse force-bearing structure 2. The symmetrically arranged support plate 8 and the intermediate steel plate 9 form a rigid connection platform. The top column 14 acts as a vertical force transmission component to transfer the load to the lap platform. The mutual lap of multiple inclined support rods 6 forms a spatial truss structure 6. The connection between the lap platform 7 at the end of the support rod and the top column 14 realizes the load diversion 7. The overall structure can effectively resist lateral forces and improve the overall stability.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A prefabricated bridge connection device, characterized in that, include: A base (1) is fixedly connected to a pier (2) on its upper surface. Multiple longitudinal bars (3) are fixedly connected inside the pier (2). Stirrups (4) are fixedly connected outside the multiple longitudinal bars (3). A cap beam (5) is fixedly connected to the top of the pier (2). A support rod (6) is fixedly connected to the upper surface of the cap beam (5). An overlapping platform (7) is fixedly connected to the end of the support rod (6). Two symmetrically arranged support plates (8) are fixedly connected to the upper surface of the cap beam (5). The two support plates (8) are fixedly connected by a steel plate (9). Two symmetrically arranged tie rods (10) are fixedly connected to the lower surfaces of the two receiving plates (8). The bottom of the two tie rods (10) is fixedly connected to the base (1). Multiple positioning blocks (11) are fixedly connected to the outside of the tie rods (10). The multiple positioning blocks (11) are fixedly connected to each other by elastic elements (12). A buffer column (13) is fixedly connected to the upper surface of the receiving plate (8). The top of the buffer column (13) is fixedly connected to the overlapping platform (7).

2. The prefabricated bridge connection device according to claim 1, characterized in that, The two pull rods (10) have the same external structure, and the elastic element (12) is located outside the pull rod (10).

3. The prefabricated bridge connection device according to claim 1, characterized in that, A top column (14) is fixedly connected to the upper surface of the steel plate (9), and the upper surface of the top column (14) is fixed to the overlapping platform (7).

4. The prefabricated bridge connection device according to claim 1, characterized in that, There are multiple support rods (6) that overlap each other in sequence, and the multiple support rods (6) are arranged along the inclined direction.

5. A prefabricated bridge connection device according to claim 1, characterized in that, The overlapping platform (7) has an embedded groove inside, and the cross-section of the overlapping platform (7) is a platform structure that gradually decreases from top to bottom.

6. The prefabricated bridge connection device according to claim 1, characterized in that, The overlapping platform (7) is provided with a number of reinforcing ribs (15), and the number of reinforcing ribs (15) are arranged in a cross shape.

7. A prefabricated bridge connection device according to claim 1, characterized in that, The lower surface of the base (1) is fixedly connected to a pile foundation (16), and there are multiple pile foundations (16) arranged in an array at equal intervals.

8. A prefabricated bridge connection device according to claim 7, characterized in that, A T-shaped plate (17) is fixedly connected to the side surface of the base (1). The T-shaped plate (17) is set along the inclined direction and cooperates with the pile foundation (16).

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