Self-adaptive horizontal force support and bridge structure
By designing an adaptive horizontal force support in the bridge support, using the combination of the first stop and the elastic abutment member, the problem of insufficient force on some support in the prior art is solved, and a more efficient seismic force dissipation and shock absorption effect is achieved.
Patent Information
- Application Number
- CN202421533155.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-01
AI Technical Summary
During earthquakes, some of the existing bridge support are too small or almost no force, and the utilization rate is low, resulting in poor dissipation effect of seismic force.
An adaptive horizontal force support is designed, using a combination of a first stop and an elastic abutment member, and the block body is connected to the first support plate. The elastic abutment member can eliminate dimensional errors during earthquakes and directly abut with the support body or the second support plate, so that each support can bear force and dissipate seismic force.
Through adaptive connection, each bearing can be subjected to force during earthquakes, which improves the utilization rate and shock absorption effect of the bearings, and enhances the dissipation ability of the earthquake force.
Smart Images
Figure CN222862059U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge supports, and in particular relates to an adaptive horizontal force support and a bridge structure. Background Art
[0002] Bridge bearings are important structural components that connect the superstructure and substructure of a bridge. They can reliably transfer the load and deformation (displacement and rotation) borne by the superstructure of the bridge to the substructure of the bridge, and are important force transmission devices of the bridge.
[0003] In some existing support structures, lateral blocks are installed. When an earthquake occurs, the blocks are sheared off first, consuming part of the seismic force, avoiding the period of outstanding seismic response, and reducing the seismic force response, thereby achieving the purpose of shock absorption.
[0004] Bridges are usually equipped with multiple bearings, which work together to dissipate earthquake forces. However, in actual use, some bearings are under little or almost unloaded, resulting in low utilization of the bearings and poor dissipation of earthquake forces. Utility Model Content
[0005] The purpose of this application is to provide an adaptive horizontal force support and a bridge structure to solve the above-mentioned technical problems existing in the prior art.
[0006] This application is implemented as follows:
[0007] In the first aspect, an embodiment of the present application provides an adaptive horizontal force bearing, comprising a first bearing plate, a bearing body and a second bearing plate, the bearing body being movably arranged between the first bearing plate and the second bearing plate, one of the first bearing plate and the second bearing plate being used to connect the beam body, and the other being used to connect the pier; the first bearing plate is connected to a first stop block, the first stop block comprising a block body and an elastic abutment, the block body being mounted on the first bearing plate, the elastic abutment being mounted on the block body, and the elastic abutment being configured to abut against the bearing body or the second bearing plate under its elastic action.
[0008] In a second aspect, an embodiment of the present application provides a bridge structure, including the adaptive horizontal force bearing provided by the embodiment of the first aspect.
[0009] The technical solution provided by this application can achieve the following beneficial effects:
[0010] In the present application, a first stop block is provided, comprising a block body and an elastic abutment, wherein: the block body is connected to the first support plate, and when an earthquake occurs, the block body can be sheared off, thereby dissipating the seismic force; the elastic abutment can eliminate the dimensional error between the block body and the support body or the second support plate according to its own elastic properties, and directly abut with the support body or the second support plate, so that the first stop block can contact the support body or the second support plate through the elastic abutment; in the event of an earthquake, it is ensured that multiple supports connected to the bridge can be subjected to force through the first stop block, thereby dissipating the seismic force, making full use of each support and enhancing the shock-absorbing effect of the support. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0012] Figure 1 This is a schematic diagram of the structure of the bridge support provided in some embodiments of the present application. Figure 1 ;
[0013] Figure 2 This application is about Figure 1 Detailed view of point A;
[0014] Figure 3 This application is about Figure 1 Schematic diagram of structural decomposition at A;
[0015] Figure 4 is a top view of a bridge bearing provided by some embodiments of the present application;
[0016] Figure 5 This application is about Figure 4 Detail of point B;
[0017] Figure 6 is a schematic structural diagram of a fixed bridge bearing provided in some embodiments of the present application;
[0018] Figure 7 is a schematic structural diagram of a one-way bridge bearing provided in some embodiments of the present application;
[0019] Figure 8 It is a schematic diagram of the installation of bridge bearings provided in some embodiments of the present application.
[0020] In the figure: 10-bridge bearing, 100-first bearing plate, 200-second bearing plate, 300-bearing body, 400-first stopper, 410-block body, 411-inner wall surface, 412-installation groove, 412a-use gap, 420-elastic member, 430-abutment member, 510-first sliding plate, 520-second sliding plate, 600-second stopper, 20-beam body. DETAILED DESCRIPTION
[0021] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.
[0022] In the related art, a plurality of bearings arranged longitudinally along the bridge are installed on the bridge. The bearings include two bearing plates and a bearing body slidably and / or rotatably installed between the two bearing plates. A stopper is installed on one of the bearing plates and abuts against the other bearing plate or the bearing body.
[0023] When an earthquake strikes, the bearing plate slides or rotates relative to the bearing body, and the stopper touches the bearing body, or the stopper touches another bearing plate, so that the stopper is sheared off and the earthquake force is dissipated. However, due to the influence of manufacturing errors, assembly errors, installation errors, etc., not all of the multiple bearings can be installed in place. There may be errors between the stopper of some bearings and the bearing plate or the bearing body, and they cannot abut against each other, resulting in the stopper of the bearing not being able to cooperate with the stopper of other bearings to dissipate the earthquake force, and the shock absorption effect of the bearing corresponding to the stopper is poor.
[0024] In view of this, the embodiment of the present application provides an adaptive horizontal force support, including a first support plate 100, a support body 300 and a second support plate 200, referring to Figure 1 , Figure 6 and Figure 7 As shown. The support body 300 is movably arranged between the first support plate 100 and the second support plate 200. The movable arrangement is to enable the support body 300 to move relative to the first support plate 100 and the second support plate 200. For example, the movable arrangement can be a rotation arrangement or a sliding arrangement. One of the first support plate 100 and the second support plate 200 is used to connect the beam body 20, and the other is used to connect the pier. In the embodiment of the present application, the specific installation positions of the first support plate 100 and the second support plate 200 are not limited.
[0025] The first support plate 100 is connected to a first stopper 400, Figures 1 to 3As shown, the first stopper 400 includes a block body 410 and an elastic abutment member, wherein the block body 410 is mounted on the first support plate 100, and the elastic abutment member is mounted on the block body 410, and the elastic abutment member is configured to abut against the support body 300 or the second support plate 200 under its elastic action.
[0026] The block body 410 is connected to the first support plate 100, and generally pins and bolts are arranged to connect the block body 410 and the first support plate 100. When the earthquake force comes, the block body 410 is sheared off by the relative movement of the first support plate 100 and the second support plate 200, or by the relative movement of the first support plate 100 and the support body 300. It should be noted that the shearing in the embodiment of the present application refers to the shearing of the connecting piece between the block body 410 and the first support plate 100, that is, the pins and screws are sheared off, so that the first stopper 400 falls off from the first support plate 100.
[0027] Even when the support is installed, the block body 410 cannot directly contact the support body 300 or the second support plate 200 due to manufacturing errors, assembly errors, or installation errors, but the elastic abutment can eliminate the dimensional error between the block body 410 and the support body 300, or the block body 410 and the second support plate 200 due to its elastic characteristics, and directly abut against the support body 300 or the second support plate 200.
[0028] The first stop block 400 realizes an adaptive connection with the support body 300 or the second support plate 200 through an elastic abutment. When an earthquake occurs, the first stop block 400 of each of the multiple supports connected to the bridge can be simultaneously subjected to the horizontal seismic force. On the one hand, it can enhance the utilization rate of the supports and prevent some supports from being unable to play their shock-absorbing role. On the other hand, multiple supports dissipate the seismic force at the same time, so that the seismic force borne by each support is reduced, thus preventing a single support from being subjected to excessive pressure, which results in the inability of the support to dissipate all the seismic forces. This can correspondingly enhance the dissipation effect of each support on the seismic force and enhance the shock-absorbing effect of the support.
[0029] The first stopper 400 is fixed to the first support plate 100 and can be in contact with the support body 300. When an earthquake occurs, the first support plate 100 and the support body 300 move relative to each other, and the first stopper 400 is sheared off. The first stopper 400 can also be in contact with the second support plate 200. When an earthquake occurs, the first support plate 100 and the second support plate 200 move relative to each other, and the first stopper 400 is sheared off to dissipate the earthquake force.
[0030] In some preferred embodiments, in the radial direction of the support, the surface of the block body 410 close to the support is an inner wall surface 411, and the inner wall surface 411 is provided with a mounting groove 412. Figure 2 and Figure 3 As shown, at least part of the elastic abutment is located in the mounting groove 412. The elastic abutment is elastic, and when squeezed by external force, the entire elastic abutment can be compressed into the mounting groove 412; when not squeezed by external force, a part of the elastic abutment can protrude from the mounting groove 412 and abut against the support body 300 or the first support plate 100 outside the mounting groove 412.
[0031] Exemplarily, when the installation position of the first stopper 400 is appropriate, the block body 410 of the first stopper 400 can directly abut against the support body 300 or the second support plate 200, the elastic abutment is completely compressed into the installation groove 412, and the elastic abutment and the inner wall surface 411 abut against the support body 300 and the second support plate 200. In the event of an earthquake, the elastic abutment and the block body 410 are subjected to force together.
[0032] Exemplarily, the installation position of the first stop block 400 is inappropriate, and the elastic abutment part protrudes from the inner wall surface 411 to abut against the support body 300 or the second support plate 200. When an earthquake occurs, the second support plate 200 or the support body 300 first compresses the elastic abutment toward the installation groove 412. After the elastic abutment is compressed to a certain extent, the second support or the support body 300 abuts against the inner wall surface 411, and the elastic abutment and the block body 410 are subjected to force together, thereby avoiding the situation where the elastic abutment is subjected to force alone when an earthquake occurs.
[0033] Further preferably, the inner wall surface 411 of the block body 410 includes an abutting area for abutting against the support body 300 or the second support plate 200, and the abutting area is arranged around the mounting groove 412. The elastic abutting member can be restricted all around to prevent the elastic abutting member from being compressed in a direction other than the preset direction.
[0034] In the event of an earthquake, the support body 300 or the second support plate 200 abutting against the first stopper 400 pushes the first stopper 400, and under the action of shear force, the first stopper 400 is sheared off. Figure 1 As shown, in the axial direction of the support, the abutment area is located at a position of the block body 410 away from the first support plate 100, so that when the block body 410 is subjected to force, the force arm is longer and easier to be sheared. At the same time, the abutment area is away from the first support plate 100, making the overall structural layout of the support more reasonable. Exemplarily, when the elastic abutment member abuts against the second support plate 200, the distance between the elastic abutment member and the first support plate 100 corresponds to the support body 300, which is more in line with the structure of the support.
[0035] In the first stopper 400, the component that plays the role of dissipating seismic force is mainly the block body 410. Compared with the prior art, the structural strength of the block body 410 cannot be too low. At the same time, since the mounting groove 412 is provided on the block body 410, it is necessary to reduce the influence of the mounting groove 412 on the structural strength of the block body 410 as much as possible. The depth of the mounting groove 412 cannot be too deep. If the depth of the mounting groove 412 is too deep, the structural strength of the block body 410 will be greatly affected. In some embodiments of the present application, in the radial direction of the support, the depth dimension of the mounting groove 412 is less than half of the thickness dimension of the block body 410 in the radial direction of the support, so that the mounting groove 412 has enough space to place the elastic abutment, and at the same time, the influence of the mounting groove 412 on the structural strength of the block body 410 is reduced. In addition, the depth of the mounting groove 412 should not be too shallow. The depth of the mounting groove 412 needs to be determined according to the size of the elastic abutment. The mounting groove 412 needs to be able to accommodate the elastic abutment and keep a certain margin of activity for the elastic abutment.
[0036] In some embodiments of the present application, the elastic abutment may be a rubber structure. In other embodiments, the elastic abutment may include an elastic member 420 and an abutment 430. The elastic member 420 is installed in the mounting groove 412. The elastic member 420 can be compressed under the action of an external force. At least part of the abutment 430 is installed in the mounting groove 412. The abutment 430 is used to abut against the support body 300 or the second support plate 200. The elastic member 420 can select a spring with a suitable elastic coefficient according to actual needs. The elastic member 420 can also select elastic rubber, etc. The abutment 430 needs to abut against the support body 300. The abutment 430 can select a structural member with a low surface roughness and a relatively smooth overall surface.
[0037] refer to Figure 2 As shown, in some preferred embodiments, a gap 412a is provided between the elastic member 420 and the inner wall of the mounting groove 412 to provide deformation space for the elastic member 420 and ensure that the abutting member 430 can be smoothly pressed into the interior of the mounting groove 412 .
[0038] The support generally has two sliding directions, namely the horizontal direction of the bridge and the vertical direction of the bridge. The first stopper 400 is generally arranged in the horizontal direction to prevent the horizontal movement of the support. When the support moves in the vertical direction, the first stopper 400 will slide relative to the support body 300 or the second support plate 200 abutting against it. In some embodiments of the present application, the support further includes a sliding assembly, which includes a first sliding plate 510 and a second sliding plate 520. Figure 2 and Figure 3As shown, the first sliding plate 510 is fixed to the support body 300 or the second support plate 200, the second sliding plate 520 is fixed to the elastic abutment, the first sliding plate 510 abuts against the second sliding plate 520, and at the same time, the friction coefficient between the first sliding plate 510 and the second sliding plate 520 is small, smaller than the friction coefficient between the elastic abutment and the support body 300, or smaller than the friction coefficient between the elastic abutment and the second support plate 200, so as to ensure that the first stopper 400 can slide relative to the support body 300 or the second support plate 200. When the elastic abutment abuts against the support body 300, the first sliding plate 510 is fixed to the support body 300, and when the elastic abutment abuts against the second support plate 200, the first sliding plate 510 is fixed to the support body 300.
[0039] In the case where the elastic abutment member includes two parts, the elastic member 420 and the abutment member 430, refer to Figure 5 As shown, the second sliding plate 520 is fixed to the surface of the abutment member 430 away from the elastic member 420 .
[0040] Further preferably, in the axial direction of the support, the height of the first sliding plate 510 is smaller than the height of the mounting groove 412, and the height of the second sliding plate 520 is smaller than the height of the mounting groove 412. When the support body 300 or the second support plate 200 presses the abutment 430 into the mounting groove 412, the first sliding plate 510 and the second sliding plate 520 can also be pressed into the inside of the mounting groove 412, so that the support body 300 or the second support plate 200 can abut against the inner wall surface 411, thereby increasing the contact area between the support body 300 or the second support plate 200 and the block body 410, and avoiding the first sliding plate 510 and the second sliding plate 520 from being blocked between the first stop block 400 and the support body 300, or the second support plate 200.
[0041] In actual engineering applications, bridge bearings 10 are generally divided into three types, namely fixed type, one-way type and two-way type. In the fixed type bearing, blocks are arranged around the bearing. Figure 4 As shown, two first stoppers 400 are arranged in the transverse direction, and the first stoppers 400 have elastic abutment members, and two second stoppers 600 are arranged in the longitudinal direction, and the two second stoppers 600 prevent the first support plate 100 from moving in the longitudinal direction. Figure 6 In the one-way support, two first blocks 400 or second blocks 600 are only provided in one of the longitudinal and transverse directions, and no block is provided in the other direction to limit the support. The cross-sectional schematic diagram of the one-way support in the direction without the block can be referred to Figure 7 As shown, the one-way bearing can slide in the horizontal direction. In the bidirectional bearing, no block is set in the horizontal and vertical directions. The cross-sectional diagram of the bidirectional bearing can be referred to Figure 7shown.
[0042] The bridge is generally connected with a plurality of bridge bearings 10, Figure 8 As shown, a plurality of bridge supports 10 are located below the beam body 20, wherein: Figure 8 The x direction shown indicates the longitudinal direction of the bridge, and the y direction indicates the transverse direction of the bridge. The bridge bearing 10 provided with arrows in both the x direction and the y direction indicates a bidirectional bearing, and the bridge bearing 10 provided with arrows only in the x direction or the y direction indicates a unidirectional bearing. Figure 8 There are a total of four bridge supports 10 that can move along the x-direction, and these bridge supports 10 are all provided with a first stopper 400 in the y-direction. There is a bridge support 10 that can move along the y-direction, and the bridge support 10 is provided with a second stopper 600 in the x-direction. The bridge support 10 without an arrow is a fixed support.
[0043] When an earthquake occurs, the beam 20 moves along the y direction, and the elastic abutment members of the fixed and one-way bridge bearings 10 abut against the bearing body 300 or the second bearing plate 200. Multiple bridge bearings 10 can share the seismic force together, and the first blocks 400 of multiple bridge bearings 10 can all be sheared off to dissipate the seismic force.
[0044] An embodiment of the present application also provides a bridge structure, comprising the adaptive horizontal force support provided by any of the above embodiments.
[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An adaptive horizontal force support, characterized in that: The invention comprises a first support plate (100), a support body (300) and a second support plate (200), wherein the support body (300) is movably arranged between the first support plate (100) and the second support plate (200), and one of the first support plate (100) and the second support plate (200) is used to connect the beam body (20), and the other is used to connect the pier; The first support plate (100) is connected to a first stop block (400), and the first stop block (400) includes a block body (410) and an elastic abutment member, the block body (410) is installed on the first support plate (100), and the elastic abutment member is installed on the block body (410), and the elastic abutment member is configured to abut against the support body (300) or the second support plate (200) under its elastic action.
2. The adaptive horizontal force support according to claim 1, characterized in that: In the radial direction of the support, the surface of the block body (410) close to the support body (300) is an inner wall surface (411), and the inner wall surface (411) is provided with a mounting groove (412). At least a part of the elastic abutment member is located in the mounting groove (412), and the elastic abutment member and the inner wall surface (411) can be jointly abutted to the support body (300) or the second support plate (200).
3. The adaptive horizontal force support according to claim 2, characterized in that: The inner wall surface (411) comprises a contact area for contacting with the support body (300) or the second support plate (200), and the contact area is arranged around the installation groove (412).
4. The adaptive horizontal force support according to claim 3, characterized in that: In the axial direction of the support, the abutment area is located at a portion of the block body (410) away from the first support plate (100).
5. The adaptive horizontal force support according to claim 2, characterized in that: In the radial direction of the support, the depth dimension of the installation groove (412) is less than half of the thickness dimension of the block body (410).
6. The adaptive horizontal force support according to claim 2, characterized in that: The elastic abutment member comprises an elastic member (420) and an abutment member (430); the elastic member (420) is installed in the installation groove (412); at least a portion of the abutment member (430) is located in the installation groove (412) and is connected to the elastic member (420); the abutment member (430) is used to abut against the support body (300) or the second support plate (200).
7. The adaptive horizontal force support according to claim 6, characterized in that: A usable gap (412a) is provided between the elastic member (420) and the inner wall of the mounting groove (412).
8. The adaptive horizontal force support according to claim 2, characterized in that: The support further includes a sliding assembly, which includes a first sliding plate (510) and a second sliding plate (520), wherein the first sliding plate (510) is fixed to the support body (300) or the second support plate (200), and the second sliding plate (520) is fixed to the elastic abutment member, and the first sliding plate (510) abuts against the second sliding plate (520), and the friction coefficient between the first sliding plate (510) and the second sliding plate (520) is smaller than the friction coefficient between the elastic abutment member and the support body (300), or smaller than the friction coefficient between the elastic abutment member and the second support plate (200).
9. The adaptive horizontal force support according to claim 8, characterized in that: In the axial direction of the support, the height of the first sliding plate (510) is smaller than the height of the mounting groove (412), and the height of the second sliding plate (520) is smaller than the height of the mounting groove (412); The support body (300) or the second support plate (200) can press the first sliding plate (510) and the second sliding plate (520) into the installation groove (412) so as to abut against the inner wall surface (411).
10. A bridge structure, characterized in that: Comprising the adaptive horizontal force support as described in any one of claims 1-9.