Bridge seismic reinforcement isolation support

Abstract

The utility model discloses a bridge seismic reinforcement's shock insulation support relates to bridge shock insulation support technical field, including mounting seat, shock insulation support, the mounting seat includes fixed ring, the upper surface of fixed ring is established and places the groove, the placing groove is two, two placing grooves are equidistant arrangement of the center of circle of fixed ring, the inner wall of fixed ring is established and has in the inner buckle groove, the inner buckle groove is two, two inner buckle groove with two placing groove are linked together, the shock insulation support includes rubber block, the upper surface of rubber block is established and has the recess, the utility model discloses mounting seat and shock insulation support are the split type design, convenient transportation, install shock insulation support, put into mounting seat when shock insulation support, the external convex tooth and placing groove are mutually aligned at this moment, then rotate 45 degrees with shock insulation support, rotate the external convex tooth and enter the inner buckle groove, thereby complete the installation of mounting seat and shock insulation support, and convenient installation and replacement need not use screw additionally.

Description

Technical Field

[0001] This utility model relates to the field of bridge seismic isolation bearing technology, and in particular to a seismic isolation bearing for bridge seismic reinforcement. Background Technology

[0002] With the increasing frequency of earthquakes worldwide, seismic isolation and mitigation in bridge structures are receiving more and more attention. Currently, the most widely used method for bridge seismic resistance is "seismic isolation bearings," which involves installing bearings between the superstructure and the piers to extend the structural period, dissipate seismic energy, and thus reduce the bridge's seismic response.

[0003] The main types of existing seismic isolation bearings are lead-core rubber bearings, pot bearings, and high-damping rubber bearings. These bearings all work by absorbing and dissipating seismic energy to prevent bridge damage and reduce the threat of seismic forces to human life and property. However, for some small- to medium-span bridges with lower seismic resistance requirements, using these seismic isolation bearings would undoubtedly lead to problems such as excess energy, high cost, and difficult installation. Furthermore, the bottom mounting plate and the seismic isolation bearing are usually designed as a single unit, which can cause transportation difficulties. Therefore, a seismic isolation bearing for bridge seismic strengthening is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a seismic isolation bearing for bridge seismic reinforcement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A seismic isolation bearing for bridge seismic reinforcement includes a mounting base and a seismic isolation bearing. The mounting base includes a fixing ring. The upper surface of the fixing ring has two placement grooves, which are equidistant from the center of the fixing ring. The inner wall of the fixing ring has two inner fastening grooves, which are connected to the two placement grooves.

[0007] The seismic isolation bearing includes a rubber block, the upper surface of which has a groove, and an upper support steel plate is sleeved on the rubber block at the groove. A lower support steel plate is fixedly connected to the lower surface of the rubber block, and an external protruding tooth is fixedly connected to the outer side wall of the lower support steel plate.

[0008] The size of the bottom of the protruding tooth matches the size of the placement groove, and the size of the protruding tooth matches the size of the inner groove.

[0009] Preferably, the outer wall of the fixing ring is provided with eight mounting holes, which are arranged at equal intervals around the center of the fixing ring.

[0010] Preferably, a convex ring is fixedly connected to the upper surface of the lower support steel plate, and the convex ring and the outer convex teeth are integrally formed with the lower support steel plate, and the bottom of the rubber block is fixedly sleeved with the convex ring.

[0011] Preferably, the rubber block has a plurality of equidistant inner support steel plates in the middle, and the plurality of inner support steel plates are located between the upper support steel plate and the lower support steel plate.

[0012] Preferably, the upper surface of the upper support steel plate is provided with a threaded hole, a gasket is placed on the upper surface of the upper support steel plate, a through hole is provided in the middle of the gasket, the through hole in the middle of the gasket corresponds to the threaded hole, a fixing screw is sleeved at the through hole of the gasket, the fixing screw is located above the gasket, and the bottom of the fixing screw is threadedly connected to the upper support steel plate through the threaded hole.

[0013] Preferably, there are multiple washers, and the length of the fixing screw is determined according to the number of washers.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, the mounting base and the seismic isolation support are designed separately, which is convenient for transportation. When installing the seismic isolation support, the seismic isolation support is placed into the mounting base. At this time, the outer protruding teeth are aligned with the placement groove. Then, the seismic isolation support is rotated 45 degrees to rotate the outer protruding teeth into the inner groove, thereby completing the installation of the mounting base and the seismic isolation support. This facilitates installation and replacement without the need for additional screws.

[0016] 2. In this utility model, the weight of the beam can be transferred to the bridge pier in sequence through the upper support steel plate, rubber block and outward protruding teeth. The outward protruding teeth can play an automatic adjustment function for vertical load bearing, which can ensure that the force of each support structure is uniform, prevent local stress on the beam, and have a good vibration reduction and isolation effect.

[0017] 3. In this utility model, the design of upper supporting steel plate, rubber block, inner supporting steel plate and outer protruding teeth enhances the vertical bearing capacity and horizontal flexibility of the seismic isolation bearing, which can resist the damage to small and medium-sized beam bridges under the action of seismic force, and effectively avoids the problems of excess energy and high cost when using seismic isolation bearings in small and medium-span bridges.

[0018] 4. In this utility model, the outer surface of the upper support steel plate is wrapped with a rubber block, and the inner support steel plate is located inside the rubber block. The bottom of the rubber block is sleeved with the convex ring, which also ensures that the upper support steel plate, the lower support steel plate and the rubber block are completely and tightly connected, increasing the overall thickness of the seismic isolation bearing, optimizing the stress performance of the seismic isolation bearing, and preventing the seismic isolation bearing from falling off when subjected to external forces.

[0019] 5. In this utility model, shims are placed on the upper surface of the upper support steel plate, the overall height of the vibration isolation support is adjusted by the shims, and fixing screws of corresponding size and length are selected according to the number of shims, and the shims are fixed by the fixing screws. Attached Figure Description

[0020] Figure 1 This is a top view of the mounting base of a seismic isolation bearing for bridge seismic reinforcement according to this utility model.

[0021] Figure 2 This utility model relates to a seismic isolation bearing for bridge seismic reinforcement. Figure 1 Cross-sectional view of AA.

[0022] Figure 3 This is a top view of the seismic isolation bearing and fixing screws of a bridge seismic reinforcement bearing according to this utility model.

[0023] Figure 4 This utility model relates to a seismic isolation bearing for bridge seismic reinforcement. Figure 3 Cross-sectional view of BB.

[0024] Figure 5 This is a schematic diagram of the lower support steel plate of a seismic isolation bearing for bridge seismic reinforcement according to this utility model.

[0025] Figure 6 This is a schematic diagram of the rubber block and upper supporting steel plate of a seismic isolation bearing for bridge seismic reinforcement according to this utility model.

[0026] Figure 7 This is a structural diagram of the upper support steel plate, fixing screws, and shims of a seismic isolation bearing for bridge seismic reinforcement according to this utility model.

[0027] Figure 8 This is a schematic diagram of the structure of a gasket for a seismic isolation bearing for bridge seismic reinforcement according to the present invention.

[0028] Figure 9 This is a structural diagram of the mounting base, seismic isolation bearing, fixing screws, and gaskets for a bridge seismic reinforcement method according to this utility model.

[0029] The following are the labels in the diagram: 1. Mounting base; 101. Fixing ring; 102. Mounting hole; 103. Placement groove; 104. Inner groove; 2. Vibration isolation bearing; 201. Rubber block; 202. Groove; 203. Upper support steel plate; 204. Lower support steel plate; 205. Outer protruding tooth; 206. Protruding ring; 207. Inner support steel plate; 208. Threaded hole; 3. Fixing screw; 4. Washer. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example:

[0032] As attached Figure 1 To be continued Figure 9 As shown:

[0033] A seismic isolation bearing for bridge seismic reinforcement includes a mounting base 1 and a seismic isolation bearing 2. The mounting base 1 includes a fixing ring 101, and two placement grooves 103 are formed on the upper surface of the fixing ring 101. The two placement grooves 103 are arranged equidistantly along the center of the fixing ring 101. Two inner buckle grooves 104 are formed on the inner wall of the fixing ring 101 and are connected to the two placement grooves 103. The seismic isolation bearing 2 includes a rubber block 201, and a groove 202 is formed on the upper surface of the rubber block 201. An upper support steel plate 203 is sleeved on the rubber block 201 at the groove 202. A lower support steel plate 204 is fixedly connected to the lower surface of the rubber block 201. An outer protruding tooth 205 is fixedly connected to the outer wall of the lower support steel plate 204. The size of the bottom of the outer protruding tooth 205 matches the size of the placement groove 103 and the size of the inner buckle groove 104.

[0034] In the above technical solution, when installing the seismic isolation bearing 2, the seismic isolation bearing 2 is placed into the mounting base 1. At this time, the outer protruding tooth 205 is aligned with the placement groove 103. Then, the seismic isolation bearing 2 is rotated 45 degrees, and the outer protruding tooth 205 is rotated into the inner fastening groove 104, thereby completing the installation of the mounting base 1 and the seismic isolation bearing 2, which facilitates the installation and replacement of the seismic isolation bearing 2.

[0035] The weight of the beam can be transferred to the bridge piers in sequence through the upper support steel plate 203, rubber block 201, and outward protruding teeth 205. Among them, the outward protruding teeth 205 can play an automatic adjustment function for vertical load, which can ensure that the force of each support structure is uniform, prevent local stress on the beam, and have a good vibration reduction and isolation effect.

[0036] The outer wall of the fixing ring 101 has eight mounting holes 102, which are arranged at equal intervals along the center of the fixing ring 101.

[0037] In the above technical solution, a through hole corresponding to the mounting hole 102 is opened on the bridge pier, the mounting seat 1 is placed on the bridge pier, and the expansion bolt passes through the mounting hole 102 to fix the mounting seat 1.

[0038] A convex ring 206 is fixedly connected to the upper surface of the lower support steel plate 204. The convex ring 206 and the outer convex tooth 205 are integrally formed with the lower support steel plate 204. The bottom of the rubber block 201 is fixedly sleeved with the convex ring 206. Multiple inner support steel plates 207 are arranged at equal intervals in the middle of the rubber block 201. The multiple inner support steel plates 207 are located between the upper support steel plate 203 and the lower support steel plate 204.

[0039] In the above technical solution, the outer surface of the upper support steel plate 203 is wrapped with a rubber block 201, and the inner support steel plate 207 is wrapped inside the rubber block 201. The bottom of the rubber block 201 is sleeved with the convex ring 206, which also ensures that the upper support steel plate 203, the lower support steel plate 204 and the rubber block 201 are completely and tightly connected, increasing the overall thickness of the seismic isolation bearing 2, optimizing the stress performance of the seismic isolation bearing 2, and preventing the seismic isolation bearing 2 from falling off when subjected to external forces.

[0040] The upper surface of the upper support steel plate 203 is provided with a threaded hole 208. A gasket 4 is placed on the upper surface of the upper support steel plate 203. A through hole is provided in the middle of the gasket 4. The through hole in the middle of the gasket 4 corresponds to the threaded hole 208. A fixing screw 3 is sleeved at the through hole of the gasket 4. The fixing screw 3 is located above the gasket 4. The bottom of the fixing screw 3 is threadedly connected to the upper support steel plate 203 through the threaded hole 208. There are multiple gaskets 4. The size and length of the fixing screw 3 are determined according to the number of gaskets 4.

[0041] In the above technical solution, shims 4 are placed on the upper surface of the upper support steel plate 203, the overall height of the seismic isolation support 2 is adjusted by the shims 4, and fixing screws 3 of corresponding size and length are selected according to the number of shims 4, and the shims 4 are fixed by the fixing screws 3.

[0042] The specific usage and function of this embodiment are as follows:

[0043] When using this utility model, a through hole corresponding to the mounting hole 102 is opened on the bridge pier, the mounting seat 1 is placed on the bridge pier, and the expansion bolt passes through the mounting hole 102 to fix the mounting seat 1. When installing the seismic isolation bearing 2;

[0044] Place the seismic isolation bearing 2 into the mounting base 1. At this time, the outer protruding tooth 205 is aligned with the placement groove 103. Then rotate the seismic isolation bearing 2 by 45 degrees and rotate the outer protruding tooth 205 into the inner groove 104, thereby completing the installation of the mounting base 1 and the seismic isolation bearing 2, which is convenient for installation and replacement.

[0045] Place shims 4 on the upper surface of the upper support steel plate 203, adjust the overall height of the seismic isolation support 2 by using shims 4, select fixing screws 3 of corresponding size and length according to the number of shims 4, and fix the shims 4 by using fixing screws 3.

[0046] The weight of the beam can be transferred to the bridge piers in sequence through the upper support steel plate 203, rubber block 201, and external protruding tooth 205. Among them, the external protruding tooth 205 can play an automatic adjustment function for vertical load, which can ensure that the force of each support structure is uniform, prevent local stress on the beam, and have a good vibration reduction and isolation effect.

[0047] The design of the upper support steel plate 203, rubber block 201, inner support steel plate 207, and outer protruding teeth 205 enhances the vertical bearing capacity and horizontal flexibility of the seismic isolation bearing 2, enabling it to resist the damage to small and medium-sized beam bridges under seismic forces and effectively avoid the problems of excess energy and high cost when the seismic isolation bearing 2 is used in small and medium-span bridges.

[0048] The outer surface of the upper support steel plate 203 is wrapped with a rubber block 201, and the inner support steel plate 207 is located inside the rubber block 201. The bottom of the rubber block 201 is connected to the convex ring 206, which also ensures that the upper support steel plate 203, the lower support steel plate 204 and the rubber block 201 are completely and tightly connected, increasing the overall thickness of the seismic isolation bearing 2, optimizing the stress performance of the seismic isolation bearing 2, and preventing the seismic isolation bearing 2 from falling off when subjected to external forces.

[0049] Please refer to the above structure and process. Figure 1-9 .

[0050] 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 seismic isolation bearing for bridge seismic reinforcement, comprising a mounting base (1) and a seismic isolation bearing (2), characterized in that, The mounting base (1) includes a fixing ring (101), and the upper surface of the fixing ring (101) is provided with a placement groove (103). There are two placement grooves (103), which are arranged equidistantly from the center of the fixing ring (101). The inner wall of the fixing ring (101) is provided with an inner buckle groove (104), which is also provided with two inner buckle grooves (104). The two inner buckle grooves (104) are connected to the two placement grooves (103). The seismic isolation bearing (2) includes a rubber block (201), the upper surface of the rubber block (201) is provided with a groove (202), the upper support steel plate (203) is sleeved on the rubber block (201) at the groove (202), the lower surface of the rubber block (201) is fixedly connected to a lower support steel plate (204), and the outer side wall of the lower support steel plate (204) is fixedly connected to an external protruding tooth (205); The size of the bottom of the protruding tooth (205) matches the size of the placement groove (103), and the size of the protruding tooth (205) matches the size of the inner groove (104).

2. The seismic isolation bearing for bridge seismic reinforcement according to claim 1, characterized in that, The outer wall of the fixing ring (101) is provided with mounting holes (102), and there are eight mounting holes (102) arranged at equal intervals along the center of the fixing ring (101).

3. The seismic isolation bearing for bridge seismic reinforcement according to claim 1, characterized in that, A convex ring (206) is fixedly connected to the upper surface of the lower support steel plate (204). The convex ring (206) and the outer convex tooth (205) are integrally formed with the lower support steel plate (204). The bottom of the rubber block (201) is fixedly sleeved with the convex ring (206).

4. The seismic isolation bearing for bridge seismic reinforcement according to claim 1, characterized in that, The rubber block (201) has a plurality of equidistantly arranged inner support steel plates (207) in the middle, and the plurality of inner support steel plates (207) are located between the upper support steel plate (203) and the lower support steel plate (204).

5. A seismic isolation bearing for bridge seismic reinforcement according to claim 1, characterized in that, The upper surface of the upper support steel plate (203) is provided with a threaded hole (208). A gasket (4) is placed on the upper surface of the upper support steel plate (203). A through hole is provided in the middle of the gasket (4). The through hole in the middle of the gasket (4) corresponds to the threaded hole (208). A fixing screw (3) is sleeved in the through hole of the gasket (4). The fixing screw (3) is located above the gasket (4). The bottom of the fixing screw (3) is threaded to the upper support steel plate (203) through the threaded hole (208).

6. A seismic isolation bearing for bridge seismic reinforcement according to claim 5, characterized in that, There are multiple washers (4), and the size and length of the fixing screw (3) are determined according to the number of washers (4).

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