A highway bridge assembled rubber support

Abstract

The utility model relates to a kind of highway bridge assembly type rubber bearing, including two respectively with bridge and pier connection fixed positioning connecting seat, two groups of limiting ring, multiple bolts and support part, two groups of the limiting ring are respectively detachably connected and fixed between using several bolts and two positioning connecting seats, the support part is set between two groups of limiting ring, and the both ends of support part are respectively and between two groups of limiting ring clamping solid connection, every group of the limiting ring includes two symmetrically arranged hoop assembly, every the hoop assembly is positioned and inserted into adjacent positioning connecting seat. By the cooperation setting of positioning connecting seat, limiting ring, bolt and support part, the rubber bearing can be assembled and assembled to each component in a positioning manner when installing and using, so that the installation process is more standard, and when replacing and maintaining, each component can also be conveniently disassembled and separated, improving the convenience of rubber bearing replacement and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of rubber bearing technology, specifically a prefabricated rubber bearing for highway bridges. Background Technology

[0002] Laminated rubber bearings are support components made of multiple layers of rubber and two or more layers of thin steel plates of the same thickness, which are then laminated, bonded, and vulcanized. They can be divided into natural rubber bearings, lead-core rubber bearings, and high-damping rubber bearings. Among them, natural rubber bearings and lead-core rubber bearings are common laminated rubber bearings. They are made of upper and lower sealing plates, a lead core (lead-core rubber bearing), multiple layers of natural rubber, and multiple layers of thin steel plates of the same thickness, all vulcanized together. Vertically, they support the weight of building components. Horizontally, the shear deformation of the multiple layers of rubber improves the horizontal stiffness of the rubber bearing, thereby reducing horizontal seismic forces and providing horizontal recovery capacity. In addition, the lead core of the lead-core rubber bearing absorbs seismic energy through shear deformation, further reducing the seismic response.

[0003] Currently, laminated rubber bearings have the following problems: poor tensile strength, making them unsuitable for seismic isolation in high-seismic zones and buildings with large height-to-width ratios due to severe structural overturning and tension; laminated rubber bearings are generally vulcanized as a single unit in the factory, which results in excessive energy consumption due to the large volume of the bearings, long vulcanization time, and high vulcanization pressure, leading to high manufacturing costs and a high defect rate. The integrated nature of laminated rubber bearings also presents challenges for transportation and installation, especially in remote areas lacking loading and unloading equipment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This utility model provides a prefabricated rubber bearing for highway bridges, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated rubber bearing for highway bridges, comprising two positioning connecting seats respectively connected and fixed to the bridge and the pier, two sets of limiting rings, multiple bolts, and a bearing portion. The two sets of limiting rings are detachably connected and fixed to the two positioning connecting seats by a number of bolts. The bearing portion is disposed between the two sets of limiting rings, and both ends of the bearing portion are respectively clamped and connected to the two sets of limiting rings. Each set of limiting rings includes two symmetrically arranged clamping assemblies. Each clamping assembly is positioned and inserted into an adjacent positioning connecting seat, and the clamping assembly is connected and fixed to the positioning connecting seat by bolts. The cavity formed by the two clamping assemblies is adapted to the end of the bearing portion, so that the end of the bearing portion is clamped by the two clamping assemblies.

[0008] Preferably, the positioning connector includes a base plate, on which a plurality of connecting holes are formed, and a positioning retaining ring fixedly connected to the base plate is provided on the inner side of the plurality of connecting holes. A plurality of positioning protrusions are formed on the inner sidewall of the positioning retaining ring, which are distributed radially at intervals, and an opening through the positioning protrusion is provided at the center of each positioning protrusion.

[0009] In a further preferred embodiment, the clamp assembly includes an arc-shaped insert plate, on the outer edge of which are formed a plurality of positioning grooves that mate with positioning protrusions. An extension plate is formed on the side of the arc-shaped insert plate facing away from the positioning connector, and an arc-shaped cover plate is formed on the side of the extension plate facing away from the arc-shaped insert plate. The arc-shaped cover plate is located outside the positioning retaining ring, and a plurality of fixing holes that mate with openings are formed on the arc-shaped cover plate. The bolts pass through the fixing holes and are threadedly connected to the openings located above the fixing holes.

[0010] In a further preferred embodiment, the support portion includes a plurality of rubber positioning grooves and rubber discs, and two lead cores. The plurality of rubber positioning grooves and rubber discs are staggered, and each of the rubber positioning grooves has a rubber positioning groove formed on both sides opposite to the rubber disc. The two lead cores are fixedly connected to the rubber positioning grooves located at both ends of the support portion, and the sum of the lengths of the two lead cores is less than the height of the plurality of rubber discs and lead cores stacked together.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides a prefabricated rubber bearing for highway bridges, which has the following advantages:

[0013] In this invention, the positioning connector, limiting ring, bolts, and support are designed to allow for precise assembly of each component during installation and use, making the installation process more standardized. Furthermore, during replacement and maintenance, the components can be easily disassembled, improving the convenience of replacement and maintenance. Additionally, the prefabricated production of this rubber bearing increases production efficiency and reduces energy consumption. The use of a steel disc and a rubber disc to jointly bear vertical forces in the support section results in a smaller tensile-compressive stiffness ratio, thereby improving the overturning tensile strength of the seismic isolation building and further optimizing horizontal stiffness to enhance seismic isolation efficiency. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a prefabricated rubber bearing for a highway bridge according to the implementation plan;

[0015] Figure 2 for Figure 1A schematic diagram of the disassembled structure of a prefabricated rubber bearing for a highway bridge.

[0016] Figure 3 This is a structural schematic diagram of the positioning connector according to the implementation plan;

[0017] Figure 4 This is a structural schematic diagram of the clamp assembly according to the implementation plan;

[0018] Figure 5 This is a structural schematic diagram of the support portion according to the implementation plan.

[0019] In the diagram: 10. Positioning connector; 11. Base plate; 111. Connecting hole; 12. Positioning retaining ring; 121. Positioning protrusion; 122. Opening; 20. Limiting ring; 21. Clamp assembly; 211. Arc-shaped insert plate; 212. Positioning groove; 213. Extension plate; 214. Arc-shaped cover plate; 215. Fixing hole; 30. Bolt; 40. Support part; 41. Steel disc; 411. Rubber positioning groove; 42. Rubber disc; 43. Lead core. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 2 A prefabricated rubber bearing for highway bridges includes two positioning connecting seats 10, which are respectively connected and fixed to the bridge and the pier; two sets of limiting rings 20; multiple bolts 30; and a bearing portion 40. The two sets of limiting rings 20 are detachably connected and fixed to the two positioning connecting seats 10 using several bolts 30. The bearing portion 40 is disposed between the two sets of limiting rings 20, and both ends of the bearing portion 40 are respectively secured to the two sets of limiting rings 20.

[0022] In this embodiment, each set of limiting rings 20 includes two symmetrically arranged clamping assemblies 21. Each clamping assembly 21 is positioned and inserted into an adjacent positioning connecting seat 10, and the clamping assembly 21 is connected and fixed to the positioning connecting seat 10 by bolts 30. After the two clamping assemblies 21 are fixed, the cavity formed by their enclosing arrangement can be adapted to the end of the support portion 40, so that the end of the support portion 40 is secured by the two clamping assemblies 21.

[0023] See Figure 3The positioning connector 10 includes a base plate 11, on which a plurality of connecting holes 111 are formed. When the positioning connector 10 is installed and fixed to a bridge or pier, bolts or other locking devices can be used to pass through the connecting holes 111 to fix it to the bridge or pier. A positioning retaining ring 12 fixedly connected to the base plate 11 is provided on the inner side of the plurality of connecting holes 111. A plurality of positioning protrusions 121 are formed on the inner sidewall of the positioning retaining ring 12, which are radially spaced. Each positioning protrusion 121 has an opening 122 at its center. The positioning retaining ring 12 is used to cooperate with the positioning and fixing of the clamp assembly 21.

[0024] See Figure 4 The clamp assembly 21 includes an arc-shaped insert plate 211. Several positioning grooves 212 are formed on the outer edge of the arc-shaped insert plate 211, which mate with the positioning protrusions 121. This allows the clamp assembly 21 to be positioned and placed by utilizing the position and shape of the positioning grooves 212 and the positioning protrusions 121 when inserted into the positioning retaining ring 12. An extension plate 213 is formed on the side of the arc-shaped insert plate 211 facing away from the positioning connecting seat 10, and an arc-shaped cover plate 214 is formed on the side of the extension plate 213 facing away from the arc-shaped insert plate 211. The arc-shaped cover plate 214 is located outside the positioning retaining ring 12, and several fixing holes 215 are formed on the arc-shaped cover plate 214, which mate with the openings 122. When fixing the positioned clamp assembly 21, bolts 30 can be passed through the fixing holes 215 and then tightened with threads between them and the openings 122 located above the fixing holes 215 to complete the connection and fixation.

[0025] See Figure 5 The support portion 40 includes several rubber positioning grooves 411, rubber discs 42, and two lead cores 43. Each rubber positioning groove 411 has a corresponding rubber positioning groove 411 on both sides, which engages with the rubber disc 42. The rubber positioning grooves 411 and rubber discs 42 are stacked alternately. The two lead cores 43 are fixedly connected to the rubber positioning grooves 411 at both ends of the support portion 40, and the sum of the lengths of the two lead cores 43 is less than the height of the stacked rubber discs 42 and lead cores 43, thus preventing interference when the support portion 40 deforms under stress.

[0026] During replacement and maintenance, first remove the bolts 30 tightened on the positioning connector 10 under the bridge. Then, use a jacking device to lift the bridge upwards, raising the bridge and the positioning connector 10 connected below it to a certain height. Next, remove the limiting ring 20 at the top of the support part 40 and replace the corresponding rubber disc 42 in the support part 40. After replacement, put the removed limiting ring 20 on the top of the support part 40, and use the jacking device to lower the bridge and the positioning connector 10 connected below it to their original positions. Finally, use bolts 30 to securely fasten the limiting ring 20 at the top of the support part 40 to the corresponding positioning connector 10.

[0027] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A prefabricated rubber bearing for highway bridges, comprising two positioning connecting seats (10) respectively fixed to the bridge and the pier, characterized in that, It also includes two sets of limiting rings (20), multiple bolts (30), and a support portion (40). The two sets of limiting rings (20) are detachably connected and fixed to two positioning connecting seats (10) by multiple bolts (30). The support portion (40) is disposed between the two sets of limiting rings (20), and both ends of the support portion (40) are respectively locked and connected to the two sets of limiting rings (20). Each of the limiting rings (20) includes two symmetrically arranged clamping assemblies (21). Each clamping assembly (21) is positioned and inserted into the adjacent positioning connecting seat (10). The clamping assembly (21) is connected and fixed to the positioning connecting seat (10) by bolts (30). The cavity formed by the two clamping assemblies (21) is adapted to the end of the support part (40), so that the end of the support part (40) is secured by the two clamping assemblies (21).

2. The prefabricated rubber bearing for highway bridges according to claim 1, characterized in that: The positioning connector (10) includes a base plate (11), on which a plurality of connecting holes (111) are formed. A positioning retaining ring (12) fixedly connected to the base plate (11) is provided on the inner side of the plurality of connecting holes (111). A plurality of positioning protrusions (121) are formed on the inner sidewall of the positioning retaining ring (12) at radial intervals. An opening (122) is provided at the center of each positioning protrusion (121).

3. A prefabricated rubber bearing for highway bridges according to claim 1 or 2, characterized in that: The clamp assembly (21) includes an arc-shaped insert plate (211). Several positioning grooves (212) that cooperate with positioning protrusions (121) are formed on the outer edge of the arc-shaped insert plate (211). An extension plate (213) is formed on the side of the arc-shaped insert plate (211) facing away from the positioning connecting seat (10). An arc-shaped cover plate (214) is formed on the side of the extension plate (213) facing away from the arc-shaped insert plate (211). The arc-shaped cover plate (214) is located outside the positioning retaining ring (12), and several fixing holes (215) that cooperate with openings (122) are formed on the arc-shaped cover plate (214).

4. The prefabricated rubber bearing for highway bridges according to claim 3, characterized in that: The bolt (30) passes through the fixing hole (215) and is threadedly connected to the opening (122) located above the fixing hole (215).

5. A prefabricated rubber bearing for highway bridges according to claim 1, characterized in that: The support portion (40) includes several rubber positioning grooves (411) and rubber discs (42) as well as two lead cores (43). The several rubber positioning grooves (411) and rubber discs (42) are staggered. Each rubber positioning groove (411) has a rubber positioning groove (411) on its opposite sides that is positioned and matched with the rubber disc (42). The two lead cores (43) are fixedly connected to the rubber positioning grooves (411) located at both ends of the support portion (40).

6. A prefabricated rubber bearing for highway bridges according to claim 5, characterized in that: The sum of the lengths of the two lead cores (43) is less than the height of the stack of several rubber discs (42) and lead cores (43).

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