Adjustable high bridge support

Abstract

The utility model belongs to bridge engineering technical field discloses a kind of adjustable high bridge support, including support body and heightening assembly.Support body includes rubber pad layer and stiffener, and heightening assembly includes first heightening piece, sealing washer and second heightening piece.First heightening piece, sealing washer and second heightening piece are collectively enclosed to form filling cavity.Filling channel one end is communicated with filling cavity, and other end is connected with filling assembly.When the height deviation of adjustable high bridge support occurs, filling assembly fills medium into filling cavity, so that the height of heightening assembly is increased, and sealing washer is used to seal filling cavity, to avoid leakage of medium.After filling medium, the adjustable high bridge support will not change its stress characteristics, and has high stability, which can effectively compensate the height deviation of adjustable high bridge support.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to an adjustable bridge bearing. Background Technology

[0002] Bridge bearings, as key components connecting the superstructure and substructure of a bridge, directly affect the safety and durability of the bridge. During bridge operation, factors such as foundation settlement, material aging, temperature changes, or load redistribution can cause problems such as height deviation and uneven stress on bridge bearings, leading to abnormal stress in the bridge structure and even localized damage. To compensate for height deviations in bridge bearings, various types of adjustable bridge bearings have been disclosed in the prior art, including bolt-adjustable, wedge-adjustable, hydraulically adjustable, or filler-adjustable types.

[0003] However, while traditional bridge height adjustment bearings can solve the bearing height problem, they still have many shortcomings in practical applications. For example, although mechanical height adjustment is easy to operate, the overall load-bearing stability is poor and stress concentration is easy to occur; there is a risk of sealing when adjusting the height with filling medium and hydraulic jacking, which is prone to leakage and failure; the mechanical properties of the bridge bearings change after height adjustment, which is inconsistent with the original bridge design. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable bridge bearing to solve the technical problem that existing infill-type adjustable bridge bearings have sealing risks and are prone to leakage and failure.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Adjustable bridge bearings, including:

[0007] The support body includes a rubber pad layer and a stiffening member, wherein the stiffening member is disposed inside the rubber pad layer;

[0008] The height adjustment assembly includes a first height adjustment component, a sealing gasket, and a second height adjustment component. The first height adjustment component is connected to the top or bottom of the rubber pad layer. The sealing gasket is connected to the side of the first height adjustment component away from the rubber pad layer. The second height adjustment component is connected to the sealing gasket. The first height adjustment component, the sealing gasket, and the second height adjustment component together form a filling cavity. A filling channel is provided on the first height adjustment component and / or the second height adjustment component. One end of the filling channel communicates with the filling cavity, and the other end is connected to a filling assembly. The filling assembly is configured to fill the filling cavity with a medium.

[0009] Optionally, the first height adjustment member is provided with a first limiting protrusion on the side near the second height adjustment member, and the second height adjustment member is provided with a second limiting protrusion on the side near the first height adjustment member. When the first height adjustment member and the second height adjustment member undergo relative displacement in the horizontal direction, the first limiting protrusion can abut against the second limiting protrusion.

[0010] Optionally, the first limiting protrusion is a plurality of first annular protrusions disposed on the first height adjustment member, the plurality of first annular protrusions being concentric and spaced apart, and the second limiting protrusion is a plurality of second annular protrusions disposed on the second height adjustment member, the plurality of second annular protrusions being able to be embedded in the groove formed by the plurality of first annular protrusions.

[0011] Optionally, multiple filling channels are provided on the first height adjustment member and / or the second height adjustment member, and the multiple filling channels are symmetrically distributed relative to the filling cavity.

[0012] Optionally, the sealing gasket is made of a sealing material that can be elastically stretched, and the sealing gasket is bonded and fixed to the first height adjustment component and the second height adjustment component respectively.

[0013] Optionally, the sealing gasket is made of rubber or polyurethane.

[0014] Optionally, both the first height adjustment component and the second height adjustment component are steel plates.

[0015] Optionally, the filling medium of the filling assembly is liquid rubber, polyurethane, or resin.

[0016] Optionally, the outer contours of both the support body and the height adjustment component are cylindrical or rectangular, and the cross-sectional areas of the support body and the height adjustment component are the same.

[0017] The beneficial effects of this utility model are:

[0018] This invention provides an adjustable-height bridge bearing, comprising a bearing body and an adjustment component. By incorporating stiffeners within the rubber pad layer, a sandwich structure of the rubber pad layer and stiffeners is formed, improving the bearing capacity and compressive strength of the bearing body. This effectively prevents the rubber pad layer from buckling under high pressure, allowing the bearing body to maintain structural stability under eccentric loads, thereby further enhancing the bearing capacity and durability of the adjustable-height bridge bearing. When a height deviation occurs in the adjustable-height bridge bearing, its height can be adjusted using a filling medium to compensate for the deviation. Specifically, the filling component injects a flowable medium into the filling cavity through the filling channel, chemically expanding the cavity. During filling, the volume of the filling cavity increases, thereby raising the height of the adjustment component. A sealing gasket is used to seal the filling cavity, preventing leakage of the flowable medium. Adjusting the height of the adjustable-height bridge bearing using the filling medium does not change its stress characteristics, avoids stress concentration, and exhibits high stability, effectively compensating for height deviations caused by foundation settlement or material aging. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the adjustable bridge support before height adjustment as described in this embodiment of the utility model;

[0020] Figure 2 This is a cross-sectional view of the adjustable bridge support after height adjustment according to an embodiment of the present invention;

[0021] Figure 3 This is a side view of the adjustable bridge support after height adjustment according to an embodiment of the present invention;

[0022] Figure 4 This is a top view of the first height adjustment component described in this embodiment of the utility model;

[0023] Figure 5 This is a top view of the second height adjustment component described in this embodiment of the utility model.

[0024] In the picture:

[0025] 1. Support body; 11. Rubber pad layer; 12. Stiffening component; 2. Height adjustment component; 21. First height adjustment component; 211. First limiting protrusion; 22. Sealing gasket; 23. Second height adjustment component; 231. Second limiting protrusion; 24. Filling cavity; 25. Filling channel; 26. Injection component. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-5 As shown, this utility model provides an adjustable bridge bearing, including a bearing body 1 and an adjusting component 2. The bearing body 1 includes a rubber pad layer 11 and a stiffening member 12, with the stiffening member 12 disposed inside the rubber pad layer 11. The adjusting component 2 includes a first adjusting member 21, a sealing gasket 22, and a second adjusting member 23. The first adjusting member 21 is connected to the top or bottom of the rubber pad layer 11, the sealing gasket 22 is connected to the side of the first adjusting member 21 away from the rubber pad layer 11, and the second adjusting member 23 is connected to the sealing gasket 22. The first adjusting member 21, the sealing gasket 22, and the second adjusting member 23 together form a filling cavity 24. A filling channel 25 is provided on the first adjusting member 21, or on the second adjusting member 23, or both the first adjusting member 21 and the second adjusting member 23 have filling channels 25. One end of the filling channel 25 is connected to the filling cavity 24, and the other end of the filling channel 25 is connected to the filling assembly 26, which is configured to fill the filling cavity 24 with a medium.

[0031] By setting a stiffener 12 inside the rubber pad 11, a sandwich structure of the rubber pad 11 and the stiffener 12 is formed, which improves the load-bearing capacity and compressive strength of the bearing body 1, effectively preventing the rubber pad 11 from buckling under high pressure, and enabling the bearing body 1 to maintain structural stability under eccentric load, thereby further improving the load-bearing capacity and durability of the adjustable bridge bearing. During bridge operation, the bridge bearing may experience height deviation due to factors such as foundation settlement, material aging, temperature changes, or load redistribution. When the adjustable bridge bearing experiences height deviation, its height can be adjusted by filling medium to compensate for the height deviation. Specifically, the filling component 26 fills the filling cavity 24 with a flowable medium through the filling channel 25, chemically expanding the filling cavity 24. During the filling process, the volume of the filling cavity 24 increases, thereby raising the height of the height adjustment component 2. The sealing gasket 22 is used to seal the filling cavity 24 to prevent leakage of the flowable medium. Adjustable bridge bearings, after being heightened by filling medium, do not change their own stress characteristics, do not cause stress concentration, have high stability, and can effectively compensate for height deviations caused by factors such as foundation settlement or material aging.

[0032] Optionally, such as Figure 1 and Figure 2 As shown, the support body 1 includes multiple stiffening members 12, which are stiffening steel plates. These stiffening steel plates are horizontally arranged within the rubber pad layer 11 and spaced apart vertically. By providing multiple horizontal stiffening steel plates within the rubber pad layer 11, the support body 1 forms a rubber-steel plate sandwich structure, significantly improving its mechanical properties. Specifically, the stiffening steel plates rigidly constrain the lateral deformation of the rubber pad layer 11, significantly increasing the compressive strength of the support body 1, enabling it to withstand greater vertical loads without excessive compression. The stiffening steel plates also effectively disperse concentrated stress, uniformly transferring localized loads to the lower rubber layer, preventing stress concentration from causing damage to the rubber pad layer 11.

[0033] Furthermore, such as Figure 2 , Figure 4 and Figure 5As shown, the first height adjustment component 21 has a first limiting protrusion 211 on the side near the second height adjustment component 23, and the second height adjustment component 23 has a second limiting protrusion 231 on the side near the first height adjustment component 21. When the first height adjustment component 21 and the second height adjustment component 23 undergo relative displacement in the horizontal direction, the first limiting protrusion 211 can abut against the second limiting protrusion 231. The first limiting protrusion 211 and the second limiting protrusion 231 can effectively prevent the height adjustment component 2 from undergoing excessive lateral displacement, thus affecting the mechanical performance of the adjustable bridge bearing. It can be understood that the first limiting protrusion 211 and the second limiting protrusion 231 can be located outside the filling cavity 24 or inside the filling cavity 24. When the first limiting protrusion 211 and the second limiting protrusion 231 are located inside the filling cavity 24, their structure does not affect the connectivity of the filling cavity 24 or the filling of the filling medium. For example, the first limiting protrusion 211 and the second limiting protrusion 231 can be annular, square, or elliptical, etc. The height or length of the first limiting protrusion 211 and the second limiting protrusion 231 can be flexibly designed according to the adjustable height parameters of the adjustable bridge bearing.

[0034] In one embodiment, such as Figure 4 and Figure 5 As shown, the first limiting protrusion 211 consists of multiple first annular protrusions on the first height adjustment component 21, which are concentric and spaced apart. The second limiting protrusion 231 consists of multiple second annular protrusions on the second height adjustment component 23, which can be embedded into the grooves formed by the multiple first annular protrusions. The first and second annular protrusions cooperate with each other to form multiple limiting and protective structures in the lateral direction, further preventing excessive lateral displacement of the height adjustment component 2 from affecting the mechanical performance of the adjustable bridge bearing.

[0035] Optionally, multiple filling channels 25 may be provided on the first height adjustment member 21, or multiple channels may be provided on the second height adjustment member 23, or multiple channels may be provided on both the first height adjustment member 21 and the second height adjustment member 23, and the multiple filling channels 25 may be symmetrically distributed with respect to the filling cavity 24. By providing multiple filling channels 25 that are symmetrically or uniformly distributed with respect to the filling cavity 24, the medium is more evenly distributed in the filling cavity 24 when the adjustable height bridge bearing is filled, resulting in a more uniform increase in the height of the adjustable height bridge bearing.

[0036] For example, the sealing gasket 22 is made of a sealing material that can be elastically stretched, and the sealing gasket 22 is bonded and fixed to the first height adjustment member 21 and the second height adjustment member 23 respectively. When the adjustable bridge bearing is filled with a medium, the volume of the filling cavity 24 increases, resulting in an increase in the gap between the first height adjustment member 21 and the second height adjustment member 23. The sealing gasket 22 can be elastically stretched to a certain extent, ensuring that the sealing gasket 22 can still seal the filling cavity 24 when the volume of the filling cavity 24 increases, preventing leakage of the filling medium and affecting the uniformity and effectiveness of the height adjustment of the adjustable bridge bearing.

[0037] Furthermore, the sealing gasket 22 is made of rubber or polyurethane. Rubber or polyurethane has good sealing performance and is elastic, allowing it to be stretched to a certain extent, effectively maintaining its sealing performance after stretching. When the gap between the first height adjustment member 21 and the second height adjustment member 23 increases, the sealing gasket 22 can undergo a certain elastic deformation, effectively sealing the filling cavity 24.

[0038] Preferably, both the first height adjustment component 21 and the second height adjustment component 23 are steel plates. Steel plates possess excellent compressive and shear strength, effectively bearing the vertical loads and horizontal forces transmitted by the bridge, ensuring the structural stability of the adjustable bridge bearing. Furthermore, steel plates exhibit superior corrosion resistance and aging resistance compared to other materials, making them less prone to deformation or failure over long-term use, and suitable for harsh outdoor environments. The first height adjustment component 21 and the bearing body 1 can be connected as a single unit through hot vulcanization, or through anchoring or welding; no specific limitation is made here.

[0039] For example, the filling medium of the filling component 26 is liquid rubber, polyurethane, or resin. These materials are flowable, easy to fill, and have good curing properties after filling, while also possessing a certain elastic modulus, making them suitable as filling and adjusting media. It is understood that the filling medium can also be other flowable media with good curing properties, such as epoxy mortar or high-strength cement-based materials. The filling component 26 is prior art in this field, and its structure and working principle will not be described in detail here.

[0040] Optionally, both the bearing body 1 and the height adjustment component 2 have cylindrical or rectangular outer contours, and their cross-sectional areas are the same. When both the bearing body 1 and the height adjustment component 2 have cylindrical outer contours, the bearing body 1, after being connected to the height adjustment component 2, forms a cylindrical adjustable bridge bearing. This design eliminates directional restrictions during installation, allowing the adjustable bridge bearing to rotate and adjust freely, facilitating construction and installation, reducing alignment errors, and improving construction efficiency. The cylindrical contour ensures uniform load distribution along the axial direction, avoiding eccentric stress, reducing the risk of localized wear, and extending the service life of the adjustable bridge bearing. When the outer contours of both the bearing body 1 and the height adjustment component 2 are rectangular, the bearing body 1 is connected to the height adjustment component 2, and the two form a rectangular adjustable bridge bearing. The rectangular section has a large moment of inertia on both longitudinal and transverse bridges, which enables the adjustable bridge bearing to provide strong bending and lateral displacement resistance when bearing vehicle loads, wind loads and seismic loads, effectively controlling the displacement of the top of the pier and ensuring traffic safety.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An adjustable bridge bearing, characterized in that, include: The support body (1) includes a rubber pad layer (11) and a stiffening member (12), wherein the stiffening member (12) is disposed inside the rubber pad layer (11); The height adjustment component (2) includes a first height adjustment element (21), a sealing gasket (22), and a second height adjustment element (23). The first height adjustment element (21) is connected to the top or bottom of the rubber pad layer (11). The sealing gasket (22) is connected to the side of the first height adjustment element (21) away from the rubber pad layer (11). The second height adjustment element (23) is connected to the sealing gasket (22). The first height adjustment element (21), the sealing gasket (22), and the second height adjustment element (23) together form a filling cavity (24). A filling channel (25) is provided on the first height adjustment element (21) and / or the second height adjustment element (23). One end of the filling channel (25) is connected to the filling cavity (24), and the other end is connected to a filling component (26). The filling component (26) is configured to fill the filling cavity (24) with a medium.

2. The adjustable bridge bearing according to claim 1, characterized in that, The first height adjustment member (21) is provided with a first limiting protrusion (211) on the side near the second height adjustment member (23), and the second height adjustment member (23) is provided with a second limiting protrusion (231) on the side near the first height adjustment member (21). When the first height adjustment member (21) and the second height adjustment member (23) undergo relative displacement in the horizontal direction, the first limiting protrusion (211) can abut against the second limiting protrusion (231).

3. The adjustable bridge bearing according to claim 2, characterized in that, The first limiting protrusion (211) is a plurality of first annular protrusions disposed on the first height adjustment member (21), the plurality of first annular protrusions being concentric and spaced apart, and the second limiting protrusion (231) is a plurality of second annular protrusions disposed on the second height adjustment member (23), the plurality of second annular protrusions being able to be embedded in the groove formed by the plurality of first annular protrusions.

4. The adjustable bridge bearing according to claim 1, characterized in that, The filling channels (25) are provided on the first height adjustment member (21) and / or the second height adjustment member (23), and the multiple filling channels (25) are symmetrically distributed relative to the filling cavity (24).

5. The adjustable height bridge bearing according to claim 1, characterized in that, The sealing gasket (22) is made of a sealing material that can be elastically stretched, and the sealing gasket (22) is bonded and fixed to the first height adjustment member (21) and the second height adjustment member (23) respectively.

6. The adjustable bridge bearing according to claim 5, characterized in that, The sealing gasket (22) is made of rubber or polyurethane.

7. The adjustable bridge bearing according to any one of claims 1-6, characterized in that, Both the first height adjustment component (21) and the second height adjustment component (23) are steel plates.

8. The adjustable bridge bearing according to any one of claims 1-6, characterized in that, The filling medium of the filling component (26) is liquid rubber, polyurethane or resin.

9. The adjustable bridge bearing according to any one of claims 1-6, characterized in that, The outer contours of the support body (1) and the height adjustment component (2) are both cylindrical or rectangular, and the cross-sectional areas of the support body (1) and the height adjustment component (2) are the same.

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