Bridge support structure

Abstract

The utility model relates to the technical field of bridge supports, in particular to a bridge support structure which comprises a support lower steel plate, a lower support assembly is arranged on the support lower steel plate, an upper support assembly is connected to the lower support assembly in a clamped mode, and the lower support assembly comprises a rubber cushion layer fixedly connected with the upper surface of the support lower steel plate. A supporting table is fixedly connected to the rubber cushion layer, a limiting assembly is further arranged on the upper surface, close to the supporting table, of the lower support steel plate, and the limiting assembly can be matched with the supporting table to support the upper support assembly and limit the offset of the upper support assembly. According to the utility model, the limiting component is matched with the supporting table, the upper pressing block and the fusiform block are matched for limiting, the tensile capacity is provided for the support, and meanwhile, the limiting component can limit the horizontal displacement distance of the supporting table and the rotation angle of the upper support steel plate, so that the large offset caused by the horizontal displacement of the supporting table is avoided; therefore, the counter force is not concentrated, and the supporting effect of the bridge support structure is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge supports, in particular to a bridge support structure. Background Art

[0002] Bridge bearings are set between the superstructure and the piers. Their main function is to transfer various loads of the superstructure to the piers, and to adapt to the displacements (displacement and deflection) caused by live loads, temperature changes, concrete shrinkage and creep, etc., so that the actual stress conditions of the upper and lower structures conform to the designed calculation diagrams. The selection of bearing types and specifications requires consideration of factors including the bridge span, support reaction force, requirements for building height, the need to adapt to unidirectional and multi-directional displacements and their displacement amounts, as well as the need for earthquake prevention and shock absorption.

[0003] In a bridge bearing and bridge structure proposed in my country's patent CN216074716U, a vibration-damping plate is set to two layers, a sliding plate layer and a vibration-damping layer, to reduce the vertical vibration of the bridge and improve driving comfort. However, this design is a compression-only bearing and does not have tensile strength. Secondly, although the design of the sliding plate layer and the vibration-damping layer provides better allowable deformation capacity, it lacks corresponding restrictions, and it is easy to have a large offset of components after deformation, which leads to risks such as unconcentrated reaction force and reduced supporting capacity. For this reason, we propose a bridge bearing structure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art and to propose a bridge support structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A bridge bearing structure comprises a bearing lower steel plate and a bearing upper steel plate, wherein a lower bearing assembly is arranged on the bearing lower steel plate, and an upper bearing assembly is arranged on the bearing upper steel plate, the lower bearing assembly comprises a rubber pad layer fixedly connected to the upper surface of the bearing lower steel plate, a support platform is fixedly connected to the rubber pad layer, the upper bearing assembly comprises a connecting column fixedly connected to the lower surface of the bearing upper steel plate, a shuttle block is fixedly connected to the lower end of the connecting column, the shuttle block is arranged to abut against the support platform, a plurality of limit assemblies are evenly arranged on the bearing lower steel plate along the circumference of the lower bearing assembly, and the limit assemblies are used to limit the shuttle block on the support platform.

[0007] Preferably, the limiting assembly includes a hinge seat fixedly connected to the lower steel plate of the support, a connecting block is rotatably connected to the hinge seat, the lower end of the connecting block is fixedly connected to a lower pressure block that can abut on the shuttle block, the lower pressure block abuts against the lower surface of the support platform, and the upper end side wall of the connecting block is fixedly connected to an upper pressure block, an inclined surface is provided on one side of the upper pressure block, and a recessed groove is opened on the inclined surface, and a limiting ring is placed in the recessed groove.

[0008] Preferably, a wedge-shaped pad is fixedly connected to the upper surface of the upper pressing block.

[0009] Preferably, a protrusion is also provided on the upper surface of the upper pressing block.

[0010] Preferably, the upper surface and the lower surface of the shuttle-shaped block are both arc surfaces, the upper surface of the support platform is provided with an arc groove, and the upper surface of the support platform is arranged to abut against the lower surface of the shuttle-shaped block.

[0011] Preferably, the rubber cushion layer includes a pressure-bearing rubber block and a natural rubber layer. The pressure-bearing rubber block is fixedly connected to the lower steel plate of the support, and a steel lining is provided on the upper surface of the pressure-bearing rubber block. The upper surface of the steel lining is fixedly connected to the natural rubber layer.

[0012] Preferably, the lower surface of the upper pressing block is arc-shaped, and a slide plate is provided on the lower surface of the upper pressing block close to the shuttle-shaped block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model, when the bridge bearing supports the bridge, utilizes the support platform to cooperate with the shuttle block to provide supporting force for the bridge, and can make the shuttle block deflect in multiple directions, and then cooperates with the rubber cushion layer to move in the horizontal direction and provide a certain buffering effect, so that the bridge bearing finally achieves the purpose of adapting to the displacement and rotation needs of the bridge; by adopting a limiting component to cooperate with the support platform, the upper pressure block and the shuttle block are used for cooperation and limitation, so as to provide the bearing with tensile resistance, and at the same time, the limiting component can also limit the horizontal displacement distance of the support platform and the rotation angle of the upper bearing steel plate, so as to avoid the horizontal displacement of the support platform causing a large offset, and then causing the reaction force to be not concentrated, affecting the supporting effect of the bridge bearing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a bridge support structure in the utility model.

[0016] Figure 2 It is a partial structural schematic diagram of a bridge support structure in the utility model.

[0017] Figure 3 It is a cross-sectional structural schematic diagram of a bridge support structure in the utility model.

[0018] Figure 4 It is a structural schematic diagram of a bridge support structure in the utility model in an unfolded state.

[0019] Figure 5 The utility model is a schematic diagram of a rubber cushion structure of a bridge support structure.

[0020] The names of the parts indicated by the numerical labels in the accompanying drawings are as follows: 1. Steel plate under the support; 2. Rubber cushion layer; 21. Pressure-bearing rubber block; 22. Steel lining plate; 23. Natural rubber layer; 3. Support platform; 4. Limiting assembly; 41. Hinge seat; 42. Connecting block; 43. Lower pressure block; 44. Upper pressure block; 45. Limiting ring; 51. Steel plate on the support; 52. Connecting column; 53. Shuttle block; 6. Wedge pad. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A bridge bearing structure in this embodiment includes a bearing lower steel plate 1 and a bearing upper steel plate 51, a lower bearing assembly is arranged on the bearing lower steel plate 1, an upper bearing assembly is arranged on the bearing upper steel plate 51, the bearing lower steel plate 1 is fixedly connected to the pier of the bridge, and a bearing cushion stone is arranged between the bearing lower steel plate 1 and the pier, the bearing cushion stone is used to level the bearing structure, avoid water accumulation at the bearing structure and facilitate the subsequent replacement of the bearing structure, the lower bearing assembly includes a rubber cushion layer 2 fixedly connected to the upper surface of the bearing lower steel plate 1, a support platform 3 is fixedly connected to the rubber cushion layer 2, the upper bearing assembly includes a connecting column 52 fixedly connected to the lower surface of the bearing upper steel plate 51, a shuttle block 53 is fixedly connected to the lower end of the connecting column 52, the shuttle block 53 is arranged to abut against the support platform 3, and a plurality of limit assemblies 4 are evenly arranged on the bearing lower steel plate 1 along the circumference of the lower bearing assembly, and the limit assembly 4 is used to limit the shuttle block 53 on the support platform 3.

[0023] Through the structure in this embodiment, after the bridge bearing structure is installed on the bridge, the shuttle block 53 is pressed against the support platform 3, so that the bridge bearing structure supports the bridge under normal conditions. The support platform 3 cooperates with the shuttle block 53 to provide support force for the bridge, so that the shuttle block 53 can be offset in multiple directions on the support platform 3, and can be moved in the horizontal direction with the rubber cushion layer 2 and provide a certain buffering effect, so that the bridge bearing structure can finally achieve the purpose of adapting to the displacement and rotation needs of the bridge.

[0024] Among them, the limiting component 4 evenly arranged circumferentially near the support platform 3 can be used to limit the displacement of the shuttle block 53, so that the shuttle block 53 cannot be separated from the limiting component 4, and finally the bridge bearing structure is made tensile-resistant. On the other hand, when the support platform 3 is displaced in the horizontal direction, the limiting component 4 can limit the moving range of the support platform 3 so that it can only move within a certain range. It can better avoid the horizontal displacement of the support platform 3 causing a large offset, thereby causing the reaction force to be unconcentrated, affecting the supporting effect of the bridge bearing structure.

[0025] Reference Figure 2-4 In this embodiment, the limit assembly 4 includes a hinge seat 41 fixedly connected to the lower steel plate 1 of the support, the hinge seat 41 is rotatably connected to a connecting block 42 through a hinge shaft, the lower end of the connecting block 42 is fixedly connected to a lower pressing block 43, the lower pressing block 43 is abutted against the lower surface of the support platform 3, the upper end of the connecting block 42 is fixedly connected to an upper pressing block 44, an inclined surface is provided on one side of the upper pressing block 44, and a sink groove is opened on the inclined surface, a limit ring 45 is placed in the sink groove, and the upper pressing block 44 is arranged above the shuttle block 53.

[0026] Reference Figure 4 In this embodiment, the support platform 3 is coaxially arranged with the rubber cushion layer 2, and its diameter is larger than the diameter of the rubber cushion layer 2, thereby forming a groove body for the lower pressing block 43 to extend into between the support platform 3 and the lower steel plate 1 of the support; wherein the upper surface and the lower surface of the shuttle block 53 are both arc surfaces, and the upper surface of the support platform 3 is provided with an arc groove, and the upper surface of the support platform 3 is arranged against the lower surface of the shuttle block 53;

[0027] Among them, since the lower pressing block is integrally formed on the connecting block, and the two are L-shaped, in actual use, a hinge shaft is used to penetrate the hinge seat and the lower end of the connecting block to realize the rotational connection of the connecting block in the hinge seat. When this bridge support structure is not installed, the connecting block 42 is in an inclined state, and the spacing between the multiple upper pressing blocks 44 is greater than the diameter of the shuttle block 53, and the lower pressing block 43 is kept in a state of abutting against the lower surface of the support platform 3. At this time, the limiting ring 45 is abutted against the inclined surface of the upper pressing block 44 and the limiting ring 45 is located above the sink. When installing this bridge support structure, as The shuttle block 53 is placed in the arc groove. After the support platform 3 is under pressure, the rubber cushion layer 2 undergoes elastic deformation, and the support platform 3 moves downward. At this time, the support platform 3 drives the lower pressing block 43 to move downward, and the lower pressing block 43 drives the connecting block 42 to rotate to a vertical state, so that the upper pressing block 44 rotates to the upper part of the shuttle block 53, so as to limit the shuttle block 53. At the same time, the limiting ring 45 also slides down the inclined surface into the sink groove under the action of gravity, so that the limiting component remains in a state above the shuttle block 53, so that the limiting effect of the shuttle block 53 and the support platform 3 is better.

[0028] It should be noted that the width of the sink is greater than the diameter of the cross section of the limiting ring 45, so that when the support load is large and the rubber cushion layer 2 continues to deform, after the support platform 3 presses down the pressing block 43, the connecting block 42 can still rotate;

[0029] After the support structure is installed, the connecting block 42 can also limit the horizontal movement range of the support platform 3 when the rubber pad 2 is shear deformed. When the rotation angle of the bridge is too large, the steel plate 51 on the support will be against the upper surface of the lower pressure block 43, so as to limit the steering offset range of the support, and restrict the bridge when the bridge is displaced and turned to a certain extent. In addition, when the bridge needs to provide tensile resistance for the bridge due to uneven force, the lower surface of the lower pressure block 43 is against the upper surface of the shuttle block 53, and the lower pressure block 43 is used to limit the displacement of the shuttle block 53. In this way, the limit assembly 4 can achieve the purpose of making this support structure have tensile resistance.

[0030] Reference Figure 5 In this embodiment, the rubber cushion layer 2 includes a pressure-bearing rubber block 21 and a natural rubber layer 23. The pressure-bearing rubber block 21 is fixedly connected to the lower steel plate 1 of the support, and a steel lining plate 22 is provided on the upper surface of the pressure-bearing rubber block 21. The upper surface of the steel lining plate 22 is fixedly connected to the natural rubber layer 23.

[0031] Among them, the natural rubber layer 23 is mainly used to provide a certain deformation modulus and shear deformation in the horizontal direction to achieve horizontal displacement, while the steel lining 22 is used to stabilize the shape of the entire rubber pad 2 and improve the physical strength of the entire rubber pad 2. The pressure-bearing rubber block 21 ensures that the rubber pad 2 still has a certain buffering capacity after being pressurized. It should be noted that since the support platform 3 is provided to cooperate with the upper support assembly to provide steering support, the rubber pad 2 does not need to achieve rotation through uneven elastic compression. The steel lining 22 can be designed to be thicker to improve the bearing capacity of the rubber pad 2, thereby improving the applicability of the entire support.

[0032] In this embodiment, a wedge-shaped pad 6 is fixedly connected to the upper surface of the upper pressure block 44. The wedge-shaped pad 6 is used to play a buffering role when the upper steel plate 51 of the support abuts against the upper surface of the lower pressure block 43. At this time, the upper steel plate 51 of the support is in an inclined state, so the wedge-shaped pad 6 is used for cooperation.

[0033] In this embodiment, a protrusion is also provided on the upper surface of the upper pressure block 44. The protrusion is provided to limit the limit ring 45 before the support structure is installed to ensure that the limit ring 45 can fall into the sink groove during the installation of the support.

[0034] In this embodiment, the lower surface of the upper pressure block 44 is arc-shaped, and a slide plate is provided on the lower surface of the upper pressure block 44 close to the shuttle block 53. When the lower surface of the upper pressure block 44 is against the upper surface of the shuttle block 53, the bridge is often in an inclined state. The arc surface of the lower surface of the upper pressure block 44 can cooperate with the upper surface of the shuttle block 53 and rotate within a certain range. The slide plate is used to reduce the friction between the upper pressure block 44 and the shuttle block 53 in this state.

[0035] Working principle: When the support structure is not installed, the limit assembly 4 is Figure 4 State, and during the installation process, the shuttle block 53 is placed on the support platform 3. After the support platform 3 is compressed, the rubber cushion layer 2 undergoes elastic deformation, and the support platform 3 continues to move downward, so that the support platform 3 can drive the lower pressing block 43 to move downward, and then drive the connecting block 42 to rotate. At this time, the multiple upper pressing blocks 44 move in a direction close to each other, and the limit ring 45 also slides down the inclined surface into the sink groove under the action of gravity. The entire installation process is completed. In this state, when the bridge is subjected to uneven force and the support needs to provide a bridge When the bridge has tensile strength, the lower surface of the lower pressure block 43 will abut against the upper surface of the shuttle block 53 and limit the displacement of the shuttle block 53. After the bridge is displaced in the horizontal direction, the rubber pad 2 shears and deforms to match the displacement of the bridge. However, the connecting block 42 can limit the horizontal movement range of the support platform 3 when the rubber pad 2 shears and deforms. When the rotation angle of the bridge is too large, the steel plate 51 on the support will abut against the upper surface of the lower pressure block 43, thereby limiting the steering offset range of the support and limiting the bridge when the bridge displaces and turns to a certain extent.

[0036] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A bridge support structure, comprising a support lower steel plate (1) and a support upper steel plate (51), characterized in that: A lower support assembly is arranged on the support lower steel plate (1), and an upper support assembly is arranged on the support upper steel plate (51). The lower support assembly comprises a rubber cushion layer (2) fixedly connected to the upper surface of the support lower steel plate (1), and a support platform (3) is fixedly connected to the rubber cushion layer (2). The upper support assembly comprises a connecting column (52) fixedly connected to the lower surface of the support upper steel plate (51), and a shuttle block (53) is fixedly connected to the lower end of the connecting column (52), and the shuttle block (53) is arranged to abut against the support platform (3). A plurality of limiting assemblies (4) are evenly arranged on the support lower steel plate (1) along the circumference of the lower support assembly, and the limiting assemblies (4) are used to limit the shuttle block (53) on the support platform (3).

2. A bridge support structure according to claim 1, characterized in that: The limiting assembly (4) comprises a hinge seat (41) fixedly connected to the lower steel plate (1) of the support, a connecting block (42) rotatably connected to the hinge seat (41), a lower pressing block (43) fixedly connected to the lower end of the connecting block (42) and capable of abutting against the shuttle block (53), the lower pressing block (43) abutting against the lower surface of the support platform (3), an upper pressing block (44) fixedly connected to the upper end side wall of the connecting block (42), an inclined surface being provided on one side of the upper pressing block (44), a recessed groove being provided on the inclined surface, and a limiting ring (45) being placed in the recessed groove.

3. A bridge support structure according to claim 2, characterized in that: A wedge-shaped pad (6) is fixedly connected to the upper surface of the upper pressing block (44).

4. A bridge support structure according to claim 2, characterized in that: The upper surface of the upper pressing block (44) is also provided with a protrusion.

5. A bridge support structure according to claim 1, characterized in that: The upper surface and the lower surface of the shuttle-shaped block (53) are both arcuate surfaces, the upper surface of the support platform (3) is provided with an arcuate groove, and the upper surface of the support platform (3) is arranged to abut against the lower surface of the shuttle-shaped block (53).

6. A bridge support structure according to claim 1, characterized in that: The rubber cushion layer (2) comprises a pressure-bearing rubber block (21) and a natural rubber layer (23); the pressure-bearing rubber block (21) is fixedly connected to the lower steel plate (1) of the support; a steel lining plate (22) is provided on the upper surface of the pressure-bearing rubber block (21); and the upper surface of the steel lining plate (22) is fixedly connected to the natural rubber layer (23).

7. A bridge support structure according to claim 4, characterized in that: The lower surface of the upper pressing block (44) is arc-shaped, and a slide plate is provided on the lower surface of the upper pressing block (44) close to the shuttle-shaped block (53).

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