Bridge plate type rubber support

Abstract

The utility model discloses a road bridge slab type rubber support relates to rubber support technical field, including rubber support body, upper bridge pier, lower bridge pier and support column, the upper bridge pier fixed mounting is in the top of rubber support body, and the lower bridge pier is fixedly installed below rubber support body, the edge ring of rubber support body is installed with support column. The utility model discloses when road bridge slab type rubber support is during use, and the gravity of the object above rubber support body can be moved to the center in the inclined surface of mounting plate, can reduce the collapse of the side edge of equipment during use, increase the whole equipment during use strong effective support force, the bottom and the middle of rubber support body are provided with steel ring and reinforcing column, center column respectively, can improve the carrying capacity of rubber support body greatly, and the gear above mounting plate can effectively prevent the bridge pier above from moving, and let the stability of whole equipment during use enhance.

Description

Technical Field

[0001] This utility model relates to the field of rubber bearing technology, specifically a road and bridge slab rubber bearing. Background Technology

[0002] Rubber bearings are the core connecting components between the superstructure (beams) and substructure (piers / abutments) of a bridge. Their main function is to transfer the vertical loads and horizontal forces of the superstructure to the foundation. The elasticity of rubber allows the bridge to undergo slight horizontal displacement and rotation due to temperature changes, vehicle loads, and seismic forces, preventing structural cracking and damage. At the same time, their own buffering performance reduces vibration impact and ensures the stability of the bridge structure. The combination of its internal rubber layer and stiffening steel plate ensures both load-bearing capacity and elastic deformation capacity, making it a key "elastic joint" for the safe operation of the bridge.

[0003] The existing Chinese utility model patent with publication number CN208815399U discloses a plate-type rubber bearing. This plate-type rubber bearing includes a steel plate, a rubber sheet, and a rubber protective layer. The rubber protective layer is fitted around the edge of the plate-type rubber bearing, and several steel plates are arranged parallel to each other inside the plate-type rubber bearing, with a rubber sheet placed between each pair of steel plates. The beneficial effects of this utility model are: it has two implementation methods, an elliptical plate-type rubber bearing and an octagonal plate-type rubber bearing. Compared with existing circular or rectangular plate-type rubber bearings, this utility model has two major advantages: first, the elliptical cross-section design allows for a large rotation angle around the major axis, a small rotation angle around the minor axis, and moderate rotation angles in other directions, making it particularly suitable for bridge structures with large longitudinal angular displacement, small transverse angular displacement, and moderate angular displacements in other directions; second, the elliptical plate-type rubber bearing has high transverse shear stiffness, effectively controlling the transverse sway deformation of the bridge structure.

[0004] Currently, the road and bridge slab rubber bearings in use still have the following problems: As a core connecting component of the superstructure and superstructure of bridges, rubber bearings must withstand vertical loads and adapt to horizontal displacements during their service life. However, in actual use, vehicle eccentric loading, seismic action, or bearing installation misalignment often lead to concentrated pressure on the sides of the bearings, causing uneven lateral stress. At the same time, with the increasing traffic load and the increasing service life of bridges, bearings are prone to exceeding their own bearing capacity due to excessive vertical pressure, resulting in excessive compression of the rubber layer, deformation of the reinforcing steel plate, or even the entire bearing collapse. This not only affects the stability and safety of the bridge structure but also shortens the service life of the bearings and increases the later maintenance costs. Therefore, there is an urgent need for a rubber bearing structure that can effectively cope with lateral pressure and excessive pressure to improve its lateral pressure resistance and load-bearing capacity. Utility Model Content

[0005] The purpose of this utility model is to provide a road and bridge slab rubber bearing to solve the problems mentioned in the background art, such as insufficient bearing capacity of the rubber bearing and uneven stress on the equipment caused by the pressure of the rubber bearing applied to the side.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This utility model provides a road and bridge slab rubber bearing, including a rubber bearing body, an upper bridge abutment, a lower bridge abutment, and a support column. The upper bridge abutment is fixedly installed above the rubber bearing body, and the lower bridge abutment is fixedly installed below the rubber bearing body. The support column is installed in a ring around the edge of the rubber bearing body. A steel central column is installed at the center of the rubber bearing body, and an installation plate extends to one side from the edge of the steel central column. A ring is installed on the surface of the rubber bearing body. Several gear teeth are provided above the installation plate and the ring. A reinforcing column made of steel bars is installed at the center of the steel central column. The support column includes a central support ring that is sleeved in the middle, and a screw is installed on the top of the support column, and a conical ring is installed below the screw. A bottom platform is fixedly installed at the bottom end of the support column.

[0007] Preferably, steel rings are installed at intervals inside the rubber support body, and the bottom steel rings are thickly stacked inside the lower part of the rubber support body. Side connecting posts are installed circumferentially on the upper and lower edges of the rubber support body, and one end of the side connecting post is provided with a round hole.

[0008] Preferably, the edge of the rubber support body is provided with a wear-resistant layer, and the wear-resistant layer is made of polytetrafluoroethylene material.

[0009] Preferably, the support column is inserted into a circular hole inside the side column and is fixedly installed on the surface of the upper bridge abutment with screws.

[0010] Preferably, the bottom platform is located inside the lower bridge abutment, and the support column is made of steel reinforcement.

[0011] Preferably, the end point of the side connecting column extends to one side and coincides with the apex of the lower bridge abutment, and rubber rings are provided on the upper and lower sides of the steel ring.

[0012] Preferably, the midpoint of the rubber bearing body and the midpoint of the upper and lower bridge abutments are located on the same horizontal line, and the upper and lower bridge abutments are concrete structures.

[0013] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. When the road and bridge slab rubber bearing is in use, the inclined surface of the mounting plate allows the weight of objects above the rubber bearing body to move towards the center, which can reduce the possibility of side collapse during use and increase the strong and effective support force of the entire equipment during use. Steel rings, reinforcing columns, and central columns are respectively set at the bottom and middle of the rubber bearing body, which can greatly improve the load-bearing capacity of the rubber bearing body. In addition, the wheel teeth on the top of the mounting plate can effectively prevent the bridge abutment above from moving, thus enhancing the stability of the entire equipment during use. 2. During the use of road and bridge slab rubber bearings, the support columns distributed on the four sides of the rubber bearing body bear the pressure on its edges, which can reduce the edge pressure of the rubber bearing body, reduce the occurrence of excessive compression leading to aging and cracking of the rubber bearing body edges, optimize the stress state of the bearing, and ensure that it plays a long-term and uniform role in shock absorption and load bearing. Attached Figure Description

[0014] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0015] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the upper structure of the rubber support body of this utility model; Figure 3 This is a schematic diagram of the internal structure of the rubber support body of this utility model; Figure 4 This is a schematic diagram of the support column structure of this utility model; In the picture: 1. Rubber bearing body; 11. Steel ring; 12. Side column; 13. Steel central column; 14. Mounting plate; 15. Circular ring; 16. Reinforcing column; 2. Upper bridge abutment; 3. Lower bridge abutment; 4. Support column; 41. Central support ring; 42. Screw; 43. Cone; 44. Bottom platform. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] Please see Figures 1-4 A type of road and bridge slab rubber bearing includes a rubber bearing body 1, an upper bridge abutment 2, a lower bridge abutment 3, and a support column 4. The edge of the rubber bearing body 1 is provided with a wear-resistant layer, which is made of polytetrafluoroethylene. A steel central column 13 is installed at the center of the rubber bearing body 1, and an mounting plate 14 extends to one side from the edge of the steel central column 13. A ring 15 is installed on the surface of the rubber bearing body 1. Several gear teeth are provided above the mounting plate 14 and the ring 15. A reinforcing column 16 made of steel bars is installed at the center of the steel central column 13.

[0019] In this embodiment, steel rings 11 are installed at intervals inside the rubber bearing body 1, and the bottom steel rings 11 are thickly stacked inside the lower part of the rubber bearing body 1. Side connecting posts 12 are installed in a ring on the upper and lower edges of the rubber bearing body 1. One end of the side connecting post 12 is provided with a round hole. The end point of the side connecting post 12 extends to one side and coincides with the top of the lower bridge abutment 3. Rubber rings are provided on the upper and lower sides of the steel rings 11.

[0020] The present invention relates to a road and bridge slab-type rubber bearing. The rubber bearing body 1 is made of steel ring 11 and rubber ring stacked inside. The gear teeth on the surface of the mounting plate 14 and the ring 15 can increase the friction between the rubber bearing body 1 and the upper bridge abutment 2, reducing the possibility of the upper bridge abutment 2 collapsing. In addition, the surface of the mounting plate 14 is inclined, which allows the pressure on the surface of the rubber bearing body 1 to be applied to the midpoint. The reinforcing column 16 and the steel central column 13 can withstand more pressure, making the upper bridge abutment 2 more stable above the rubber bearing body 1, while reducing the possibility of the edge of the rubber bearing body 1 collapsing.

[0021] For details, please refer to the following: Figure 1 As shown, the upper bridge abutment 2 is fixedly installed above the rubber bearing body 1, and the lower bridge abutment 3 is fixedly installed below the rubber bearing body 1. The midpoint of the rubber bearing body 1 and the midpoints of the upper bridge abutment 2 and the lower bridge abutment 3 are located on the same horizontal line, and the upper bridge abutment 2 and the lower bridge abutment 3 are concrete structures.

[0022] For details, please refer to the following: Figure 4As shown, a support column 4 is installed in a ring around the edge of the rubber support body 1. The support column 4 includes a central support ring 41 that is sleeved in the middle. A screw 42 is installed on the top of the support column 4, and a conical ring 43 is installed below the screw 42. A bottom platform 44 is fixedly installed at the bottom end of the support column 4.

[0023] In this embodiment, the support column 4 is inserted into the round hole inside the side column 12, and the screw 42 is fixedly installed on the surface of the upper bridge abutment 2. The bottom platform 44 is located inside the lower bridge abutment 3, and the support column 4 is made of steel bars.

[0024] The road and bridge slab rubber bearing of this utility model has a support column 4 fixedly connected to the rubber bearing body 1 through a side connecting column 12. The support column 4 and the central support ring 41 share the pressure on the side of the rubber bearing body 1, reducing the possibility of collapse due to uneven stress on the edge of the rubber bearing body 1, and reducing the frequency of later maintenance of the rubber bearing body 1.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A type of rubber bearing for road and bridge slabs, comprising a rubber bearing body (1), an upper bridge abutment (2), a lower bridge abutment (3), and a support column (4), characterized in that: The upper bridge platform (2) is fixedly installed above the rubber bearing body (1), and the lower bridge platform (3) is fixedly installed below the rubber bearing body (1). The edge of the rubber bearing body (1) is ring-shaped with a support column (4). The center of the rubber bearing body (1) is equipped with a steel central column (13), and the edge of the steel central column (13) extends to one side with an installation plate (14). The surface of the rubber bearing body (1) is equipped with a ring (15). Several gear teeth are provided above the installation plate (14) and the ring (15). The center of the steel central column (13) is equipped with a reinforcing column (16) made of steel bars. The support column (4) includes a central support ring (41) sleeved in the middle, and a screw (42) is installed on the top of the support column (4), and a conical ring (43) is installed below the screw (42). A bottom platform (44) is fixedly installed at the bottom end of the support column (4).

2. The road and bridge slab rubber bearing according to claim 1, characterized in that: The rubber support body (1) is equipped with steel rings (11) at intervals inside, and the bottom steel rings (11) are thickly stacked on the lower part of the rubber support body (1). The upper and lower edges of the rubber support body (1) are equipped with side connecting posts (12) in a ring shape, and one end of the side connecting post (12) is provided with a round hole.

3. A road and bridge slab rubber bearing according to claim 1, characterized in that: The edge of the rubber support body (1) is provided with a wear-resistant layer, and the wear-resistant layer is made of polytetrafluoroethylene material.

4. A road and bridge slab rubber bearing according to claim 2, characterized in that: The support column (4) is inserted into the round hole inside the side column (12), and the screw (42) is fixedly installed on the surface of the upper bridge abutment (2).

5. A road and bridge slab rubber bearing according to claim 2, characterized in that: The bottom platform (44) is located inside the lower bridge platform (3), and the support column (4) is made of steel bars.

6. A road and bridge slab rubber bearing according to claim 5, characterized in that: The end of the side column (12) extends to one side and coincides with the top of the lower bridge abutment (3), and rubber rings are provided on the upper and lower sides of the steel ring (11).

7. A road and bridge slab rubber bearing according to claim 2, characterized in that: The midpoint of the rubber bearing body (1) and the midpoint of the upper bridge platform (2) and the lower bridge platform (3) are located on the same horizontal line, and the upper bridge platform (2) and the lower bridge platform (3) are concrete structures.

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