Shock insulation rubber support
By setting up slurry holes and slurry tanks on the second support plate of the bridge support, the problem of untightening grouting and partial emptying is solved, and the stable connection between the support and the pier is achieved and the efficient load transmission is achieved.
Patent Information
- Application Number
- CN202421586703.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-05
AI Technical Summary
During the installation and construction of bridge support, the contact area between the steel plates of the support and the pier is large, resulting in unsolid grouting and partial emptying, which affects the bearing's ability to withstand loads.
A shock-isolating rubber support is designed, including a first support plate, a support body and a second support plate. The second support plate is provided with a slurry hole and a slurry groove. The slurry hole penetrates its axial end faces, and the slurry groove is in communication with the slurry hole, and is used to transport the slurry between the second support plate and the pier to the external environment.
Through the design of the overflow hole and overflow tank, the full slurry between the support and the pier is achieved without empty space, avoiding the problem of too much or too little slurry, and improving the connection stability and load bearing capacity of the support.
Smart Images
Figure CN222834719U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge bearings, and in particular relates to a seismic isolation rubber bearing. 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] During the installation and construction of bridge bearings, the contact area between the steel plate of the bearing and the pier is large. During the grouting and leveling process of the bearing, it is easy for the grouting to be loose and local voids to occur, which affects the bearing's ability to bear loads. Utility Model Content
[0004] The purpose of this application is to provide a seismic isolation rubber bearing to solve the above-mentioned technical problems existing in the prior art.
[0005] This application is implemented as follows:
[0006] An embodiment of the present application provides a seismic isolation rubber bearing, comprising a first bearing plate, a bearing body and a second bearing plate which are arranged in sequence and overlap each other, the bearing body being fixed between the first bearing plate and the second bearing plate, the first bearing plate being used to be connected to a beam body, and the second bearing plate being used to be connected to a pier; the second bearing plate is provided with an overflow hole, the overflow hole passes through both axial end faces of the second bearing plate, and an overflow groove is also provided on the end face of the second bearing plate close to the pier, the overflow groove being connected to the overflow hole, for transporting the slurry between the second bearing plate and the pier to the external environment.
[0007] The technical solution provided by this application can achieve the following beneficial effects:
[0008] In the present application, overflow holes are set through the two axial end faces of the second bearing plate, so that the space between the second bearing plate and the pier can be connected to the external environment. In the process of grouting and leveling the bearing, excessive slurry can overflow from the overflow holes into the external environment, so that the space between the second bearing plate and the pier is full of slurry without emptiness; the situation of excessive slurry between the second bearing plate and the pier is avoided, and the amount of slurry can be judged through the overflow holes to avoid the phenomenon of loose grouting, local voids, etc. caused by too little slurry, which affects the connection stability between the second bearing plate and the pier; and an overflow groove is further provided on the end face of the second bearing plate close to the pier, which is connected to the overflow hole. The overflow groove expands the coverage of the overflow hole and makes it easier to transport excess slurry between the second bearing plate and the pier; in addition, the slurry can be filled into the overflow groove, which expands the contact area between the slurry and the second bearing plate. After the slurry solidifies, the connection stability between the pier and the second bearing plate can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] 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.
[0010] Figure 1 This is a schematic diagram of the structure of the support provided in some embodiments of the present application. Figure 1 ;
[0011] Figure 2 This is a schematic diagram of the split structure of the support provided in some embodiments of the present application Figure 1 ;
[0012] Figure 3 This is a schematic diagram of the structure of the support provided in some embodiments of the present application. Figure 2 ;
[0013] Figure 4 This is a schematic diagram of the split structure of the support provided in some embodiments of the present application Figure 2 ;
[0014] Figure 5 Structural schematic diagram of the support provided in some embodiments of the present application Figure 3 ;
[0015] Figure 6 A top view of a support provided in some embodiments of the present application Figure 1 ;
[0016] Figure 7 A top view of a support provided in some embodiments of the present application Figure 2 .
[0017] In the figure: 100-first support plate, 200-support body, 210-installing groove, 300-second support plate, 310-overflow hole, 320-overflow groove, 321-first sub-groove, 322-second sub-groove, 400-anchoring assembly, 500-embedded steel plate, 600-shear pin, 710-first clamping protrusion, 720-first clamping groove, 810-second clamping protrusion, 820-second clamping groove. DETAILED DESCRIPTION
[0018] 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.
[0019] The present application embodiment provides a seismic isolation rubber bearing, referring to Figures 1 to 5 As shown, the support includes a first support plate 100, a support body 200 and a second support plate 300 which are arranged in sequence and overlapped. The first support plate 100 is used to connect with the beam body, and the second support plate 300 is used to connect with the pier. The support is installed between the beam body and the pier for use, and the support body 200 is the core component of the support that bears load and deformation, and the deformation includes displacement and rotation.
[0020] The second bearing plate 300 has an overflow hole 310, which passes through both end surfaces of the second bearing plate 300 in the axial direction. The overflow hole 310 connects the two axial sides of the second bearing plate 300. During the grouting and leveling process of the bearing, the excess grout between the second bearing plate 300 and the pier can overflow into the external environment through the overflow hole 310, thereby avoiding excessive grout between the second bearing plate 300 and the pier, so that the second bearing plate 300 and the pier are full of grout without emptiness; at the same time, the grout can overflow from the overflow hole 310, which can avoid too little grout, avoid the phenomenon of loose grouting and partial hollowing of the bearing due to too little grout, and avoid too little grout affecting the connection stability of the second bearing plate 300 and the pier.
[0021] The pier refers to the lower structure of the bridge. In other embodiments, the pier may also be represented by other names, such as bridge pier, pier stone, pad stone, etc. The second support plate 300 is a part of the support, so the axial direction of the support is the axial direction of the second support plate 300, and the radial direction of the support is the radial direction of the second support plate 300. The radial and axial directions of the support are determined by its position in the use state. For the support in the use state, its axial direction is the gravity direction, and the radial direction is the horizontal direction passing through the center point of the support.
[0022] The end surface of the second support plate 300 close to the pier is also provided with an overflow groove 320, which is connected to the overflow hole 310 and serves as a transmission channel for the slurry. The excess slurry between the second support plate 300 and the pier can be transported to the overflow hole 310 through the overflow groove 320, and overflows into the external environment through the overflow hole 310.
[0023] The presence of the overflow groove 320 is more conducive to balancing the amount of slurry in each contact area between the second support plate 300 and the pier, and transporting the slurry in the area with excessive slurry to the area with less slurry, so that the amount of slurry between the second support plate 300 and the pier is stable, and each area of the second support plate 300 can be stably connected to the pier.
[0024] In addition, the overflow groove 320 can transport excess slurry to the overflow hole 310, thereby expanding the corresponding effective range of the overflow hole 310 and making it easier to transport excess slurry between the second support plate 300 and the pier, thereby making the amount of slurry in each area between the pier and the second support plate 300 more appropriate, further improving the density of the slurry between the second support plate 300 and the pier.
[0025] The overflow groove 320 is provided on one end surface of the second support plate 300. The slurry is filled into the overflow groove 320, which increases the contact area between the slurry and the second support plate 300. After the slurry solidifies, the connection stability between the pier and the second support plate 300 can be further increased. Since the overflow groove 320 is formed by being relatively concave relative to the end surface of the second support plate 300, the solidified slurry in the overflow groove 320 and the second support plate 300 are mutually limited, so as to improve the connection stability between the pier and the second support plate 300 and improve the load bearing capacity of the second support plate 300.
[0026] During the installation of the support, the first support plate 100 and the second support plate 300 are respectively connected to the anchoring assembly 400 pre-embedded in the beam body or the pier, and the support is initially fixed between the beam body and the pier. Figure 6 and Figure 7 As shown, in some preferred embodiments, the overflow groove 320 extends to the portion of the second support plate 300 connected to the anchor assembly 400, and is connected to the anchor assembly 400. During the grouting and leveling process of the support, since the overflow groove 320 is connected to the anchor assembly 400, the grout can be connected to the anchor assembly 400, thereby improving the connection stability of the second support plate 300 and the anchor assembly 400.
[0027] The second support plate 300 is generally provided with a mounting through hole, which is aligned with the anchor assembly 400, and then a screw is used to pass through the mounting through hole to connect with the anchor assembly 400, thereby fixing the second support plate 300 to the anchor assembly 400. The overflow groove 320 extends to the portion of the second support plate 300 that is connected to the anchor assembly 400, and actually extends to the mounting through hole, and is connected to the mounting through hole, thereby improving the connection stability between the connector in the mounting through hole and the anchor assembly 400. The depth of the overflow groove 320 is generally not too deep, so even if the slurry is in contact with the connector, the contact area will not be too large. After the slurry solidifies, if the connector needs to be removed during the subsequent use of the support, the slurry will not affect the removal of the connector. The anchor assembly 400 generally includes one or more structures such as an anchor rod, a sleeve, and an anchor bolt.
[0028] The overflow groove 320 disposed on the second support plate 300 has various structures. In some preferred embodiments, refer to Figure 6 and Figure 7As shown, the overflow groove 320 includes a first sub-groove 321 extending along the circumference of the second support plate 300, and also includes a second sub-groove 322 extending along the radial direction of the support. Both ends of the second sub-groove 322 are connected to the first sub-groove 321 and communicate with each other. In order to facilitate observation of the structure of the overflow groove 320, Figure 6 and Figure 7 The structure of the first support plate 100 is not shown. With such a layout, the coverage of the overflow groove 320 on the second support plate 300 can be increased, the slurry distribution between the pier and the second support plate 300 can be made more uniform, and the excess slurry between the pier and the second support plate 300 can be removed as much as possible. In addition, the coverage of the overflow groove 320 is large, and the contact area between the slurry and the second support plate 300 is also large, which can further improve the stability of the second support plate 300 installed on the pier.
[0029] The first sub-groove 321 is arranged to extend along the circumference of the second support plate 300, and to increase the contact area with the slurry in the circumference of the second support plate 300, thereby improving the fixing effect of the pier on the second support plate 300 in the circumference of the support. The second sub-groove 322 extends along the radial direction of the support, filling the gap in the space enclosed by the first sub-groove 321. At the same time, the first sub-groove 321 and the second sub-groove 322 are interconnected and coordinated with each other, dividing the second support plate 300 into multiple smaller areas, which is conducive to balancing the amount of slurry in each smaller area, and each area is close to the corresponding overflow groove 320, and the excess slurry in multiple areas can flow to the overflow hole 310 through the corresponding overflow groove 320 and then overflow, thereby improving the leveling effect between the second support plate 300 and the pier, and improving the density of the slurry.
[0030] In some specific embodiments, reference Figure 6 and Figure 7 As shown, the first sub-grooves 321 are enclosed to form an annular structure, and there are two second sub-grooves 322, which intersect each other, thereby evenly dividing the second support plate 300 into multiple areas. Figure 6 As shown, the two second sub-grooves 322 are respectively extended along the length direction and the width direction of the second support plate 300. Figure 7 As shown, the two sub-grooves are respectively extended along the diagonal direction of the second support plate 300 .
[0031] Further preferably, the anchor assembly 400 is located on the extension path of the first sub-groove 321 and the second sub-groove 322. The anchor assembly 400 is located at the junction of the first sub-groove 321 and the second sub-groove 322. The slurry transported through the first sub-groove 321 and the slurry transported through the second sub-groove 322 can both flow to the location of the anchor assembly 400, thereby improving the connection stability between the anchor assembly 400 and the second support plate 300 in multiple directions of the anchor assembly 400.
[0032] There are multiple overflow holes 310 on the second support plate 300, and the multiple overflow holes 310 are evenly distributed on the overflow groove 320. It should be noted that the overflow hole 310 needs to be located outside the support body 200, and the overflow hole 310 is set as close to the edge of the second support plate 300 as possible to avoid the overflow of slurry from affecting the support body 200. In addition, the overflow hole 310 can be set close to the anchor assembly 400, that is, the overflow hole 310 is set close to the junction of the first sub-groove 321 and the second sub-groove 322. There is more slurry collected at the junction of the first sub-groove 321 and the second sub-groove 322, and the overflow hole 310 is close to the junction, which is conducive to the stable discharge of excess slurry.
[0033] The support body 200 is the core component of the support, and its ability to bear load and deformation directly affects the shock absorption effect of the support. Figures 1 to 5 As shown, one of the support body 200 and the first support plate 100 is provided with a first clamping protrusion 710, and the other is provided with a first clamping groove 720, and the first clamping protrusion 710 is correspondingly clamped into the first clamping groove 720, thereby increasing the contact area between the support body 200 and the first support plate 100, so as to improve the fixing effect of the first support plate 100 on the support body 200, and enhance the ability of the support body 200 to resist horizontal shear. And / or, similar to the first support plate 100, one of the second support plate 300 and the support body 200 is provided with a second clamping protrusion 810, and the other is provided with a second clamping groove 820, and the second clamping protrusion 810 is correspondingly clamped into the second clamping groove 820, so as to improve the connection stability between the second support plate 300 and the support body 200, and enhance the ability of the support body 200 to resist horizontal shear.
[0034] In some embodiments, the support body 200 can be selected from polymer composite materials and / or other high elastic materials, and cross-laminated with steel plates and / or other composite materials, vulcanized or bonded together, wherein the polymer composite material can be a high damping rubber material, a natural rubber material, a synthetic rubber material, and other composite high elastic materials. High damping seismic isolation rubber bearings can be made using high damping rubber materials. In some preferred embodiments, in order to adapt to the use environment of the support, when designing or selecting the support body 200, it should be noted that the vertical bearing capacity range of the support body 200 should be between 100kN and 20000kN, the value range of the first shape coefficient S1 of the support body 200 should be between 7 and 20, the value range of the design compressive stress of the support body 200 should be between 7MPa and 20MPa, and the design rotation angle of the support body 200 should not be less than 0.006rad.
[0035] The snap-fitting protrusions or snap-fitting grooves on the first support plate 100 and the second support plate 300 can be formed by extrusion, machining or welding. The shape of the snap-fitting protrusion needs to correspond to the corresponding snap-fitting groove. The embodiment of the present application has no requirements on the specific shapes of the snap-fitting protrusions and the snap-fitting grooves, and conventional settings such as arc-shaped and square structures are all acceptable.
[0036] In some embodiments, reference Figure 3 and Figure 4 As shown, the first clamping groove 720 is disposed on the first support plate 100 , and the second clamping groove 820 is disposed on the second support plate 300 .
[0037] In other embodiments, reference Figure 1 to Figure 2 As shown, the first clamping groove 720 is provided on the support body 200, and / or the second clamping groove 820 is provided on the support body 200, and correspondingly, the first clamping protrusion 710 is provided on the first support plate 100, and the second clamping protrusion 810 is provided on the second support plate 300. The clamping protrusions are all provided on the support plate, on the one hand, to avoid weakening the structural strength of the support plate; on the other hand, when the support body 200 is subjected to horizontal shear force, the clamping protrusion provided on the support plate has a higher structural strength than the clamping protrusion provided on the support body 200, and the support can have a stronger ability to resist horizontal shear.
[0038] Further, in the radial direction of the support body 200, the distance between the first clamping groove 720 located on the outside and the outer side wall of the support body 200 is greater than the distance between any two adjacent first clamping grooves 720, and / or, in the radial direction of the support body 200, the distance between the second clamping groove 820 located on the outside and the outer side wall of the support body 200 is greater than the distance between any two adjacent second clamping grooves 820, refer to Figure 1 and Figure 2 shown.
[0039] During the use of the support body 200, the outer side wall of the support body 200 is exposed to the external environment. Since the support body 200 is provided with the first clamping groove 720 and the second clamping groove 820, the structural strength of the support body 200 will be affected. If the outermost clamping groove is too close to the outer side wall of the support body 200, the thickness of the support body 200 between the outermost clamping groove and the outer side wall of the support body 200 will be thinner, which is more likely to be damaged under the influence of the external environment. Therefore, in some embodiments of the present application, the outermost clamping groove is arranged closer to the adjacent clamping groove rather than close to the outer side wall of the support body 200, so that the part of the support body 200 located at the outermost clamping groove can be thicker, the structural strength is higher, and it is less likely to be damaged under the influence of external factors.
[0040] The support provided in the embodiment of the present application further includes an embedded steel plate 500 and a shear pin 600. The embedded steel plate 500 is arranged between the beam body and the first support plate 100, embedded in a suitable position in advance, and connected to the anchor assembly 400 located in the beam body. Figures 1 to 4 The shear pin 600 is embedded between the embedded steel plate 500 and the first support plate 100. For example, a portion of the shear pin 600 is embedded in the first support plate 100 close to the embedded steel plate 500, and another portion of the shear pin 600 is embedded in the embedded steel plate 500 close to the first support plate 100. Figures 1 to 4 As shown. The shear pin 600 is used as a connecting piece between the first support plate 100 and the embedded steel plate 500 to fix the relative position between the first support plate 100 and the embedded steel plate 500, and is mainly used to withstand vertical pressure and horizontal shear force. Figure 5 As shown, the first support plate 100 is directly fixed to the anchor assembly 400 located in the beam body.
[0041] Further preferably, a mounting groove 210 is provided on one side of the support body 200 close to the beam body, and the first support plate 100 is installed in the mounting groove 210. Figure 1 and Figure 3 As shown. After the first support plate 100 is installed in the installation groove 210, the support body 200 encloses the circumference of the first support plate 100 to limit the first support plate 100. In the process of the support bearing horizontal shear force, the first support plate 100 is limited by the support body 200, which is conducive to maintaining the stability of the position of the first support plate 100, thereby stabilizing the relative position between the first support plate 100 and the embedded steel plate 500 through the shear pin 600, thereby improving the overall stability of the support.
[0042] The bearing provided in the embodiment of the present application can be used in a bridge structure. In some preferred embodiments, the bearing can be an LNR natural rubber bearing, an HDR (I) type high damping seismic isolation rubber bearing, an HDR (II) type high damping seismic isolation rubber bearing, a composite rubber bearing, etc.
[0043] 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. A seismic isolation rubber bearing, characterized in that: It comprises a first support plate (100), a support body (200) and a second support plate (300) which are arranged in sequence and overlap each other, the support body (200) is fixed between the first support plate (100) and the second support plate (300), the first support plate (100) is used to be connected to a beam body, and the second support plate (300) is used to be connected to a pier; The second support plate (300) is provided with a grout overflow hole (310), the grout overflow hole (310) passes through both axial end surfaces of the second support plate (300), and the end surface of the second support plate (300) close to the pier is also provided with a grout overflow groove (320), the grout overflow groove (320) is connected with the grout overflow hole (310), and is used to transport the slurry between the second support plate (300) and the pier to the external environment.
2. The seismic isolation rubber bearing according to claim 1, characterized in that: The second support plate (300) is fixedly connected to an anchor assembly (400) pre-buried in the pier, and the overflow groove (320) extends to a portion of the first support plate (100) connected to the anchor assembly (400), and is connected to the anchor assembly (400).
3. The seismic isolation rubber bearing according to claim 2, characterized in that: The overflow groove (320) comprises a first sub-groove (321) extending along the circumference of the second support plate (300), and a second sub-groove (322) extending along the radial direction of the support, wherein both ends of the second sub-groove (322) are connected to the first sub-groove (321) and are in communication with each other.
4. The seismic isolation rubber bearing according to claim 3, characterized in that: The anchoring assembly (400) is located simultaneously on the extension paths of the first sub-groove (321) and the second sub-groove (322).
5. The seismic isolation rubber bearing according to claim 1, characterized in that: One of the support body (200) and the first support plate (100) is provided with a first clamping protrusion (710), and the other is provided with a first clamping groove (720), and the first clamping protrusion (710) is correspondingly clamped into the first clamping groove (720); And / or, one of the support body (200) and the second support plate (300) is provided with a second snap-fitting protrusion (810), and the other is provided with a second snap-fitting groove (820), and the second snap-fitting protrusion (810) is correspondingly snap-fitted into the second snap-fitting groove (820).
6. The seismic isolation rubber bearing according to claim 5, characterized in that: The first clamping groove (720) is provided on the support body (200), and / or the second clamping groove (820) is provided on the support body (200).
7. The seismic isolation rubber bearing according to claim 6, characterized in that: In the radial direction of the support body (200), the distance between the first clamping groove (720) located on the outside and the outer side wall of the support body (200) is greater than the distance between any two adjacent first clamping grooves (720).
8. The seismic isolation rubber bearing according to claim 6, characterized in that: In the radial direction of the support body (200), the distance between the second clamping groove (820) located on the outside and the outer side wall of the support body (200) is greater than the distance between any two adjacent second clamping grooves (820).
9. The seismic isolation rubber bearing according to claim 1, characterized in that: The support further comprises an embedded steel plate (500) and a shear pin (600); the embedded steel plate (500) is located between the beam body and the first support plate (100); a portion of the shear pin (600) is embedded in a side of the first support plate (100) close to the embedded steel plate (500); and another portion of the shear pin (600) is embedded in a side of the embedded steel plate (500) close to the first support plate (100).
10. The seismic isolation rubber bearing according to claim 9, characterized in that: A mounting groove (210) is provided on one side of the support body (200) close to the beam body, and the first support plate (100) is mounted in the mounting groove (210).