Anti-seismic check block for concrete bridge
By designing removable buffer components and limiting parts, the existing earthquake-resistant stop maintenance problem is solved, the convenience and cost reduction of replacement components are achieved, and the bridge's earthquake resistance is improved.
Patent Information
- Application Number
- CN202420837712.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing concrete bridge seismic stops are prone to wear or damage after long-term use or earthquake, resulting in difficulty in maintenance and replacement and increasing maintenance costs.
A shock-resistant block consisting of a cover beam, a shock-resistant block body, a baffle, a guard plate, a limiting member and a buffer assembly are designed. The buffer assembly is removably installed, and the damaged buffer assembly is conveniently replaced by a telescopic spring and a sliding block mechanism. , reduce maintenance costs.
It realizes the convenience of replacing damaged buffer components, reduces maintenance costs, extends the service life of shock-resistant stops, and improves structural strength and shock-resistant performance through rubber pads and steel bars.
Smart Images
Figure CN222160911U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of seismic stoppers, and in particular to a seismic stopper for a concrete bridge. Background Art
[0002] The seismic stops of bridges are seismic structures installed on both sides of the cap beam or abutment. Their purpose is to prevent the main beam from falling laterally under the action of seismic loads. In my country, most small and medium-span continuous beam bridges use plate rubber bearings. For such bridges, the bearings will undergo large displacements under the action of earthquakes. In order to prevent the occurrence of lateral bridge falls, seismic stops are usually installed at both ends of the piers and cap beams.
[0003] According to Chinese patent number CN220598125U, an ultra-high performance concrete bridge seismic stopper includes a buffer rubber pad, energy-absorbing steel bars and a block body cast by concrete. The energy-absorbing steel bars are anchored on a cap beam, the energy-absorbing steel bars are integrally cast with the block body, and the buffer rubber pad is arranged on one side of the block body close to the main beam.
[0004] During use, the seismic block of this patent number has a buffering effect on the displacement of the main beam through the support box installed on the block and multiple fixed cylinders in the block. The spring buffer assembly in the support box and the fixed cylinder can reduce the impact force of the main beam on the block when an earthquake occurs, and the function of the spring buffer assembly is to provide additional damping and energy dissipation capacity. These components may be worn or damaged after long-term use or earthquake, and therefore need to be inspected and maintained and replaced regularly. The fixed cylinder is installed inside and on the top of the block by casting, which requires the replacement of the entire seismic block during subsequent maintenance and replacement. The replacement is more troublesome and the maintenance cost is high. Therefore, a concrete bridge seismic block is proposed to solve the above problems. Utility Model Content
[0005] In view of the deficiencies in the prior art, the present application provides a seismic stopper for a concrete bridge, which has the advantages of being easy to replace the buffer assembly on the stopper after it is damaged.
[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a seismic stop block for a concrete bridge, comprising a cap beam, a seismic stop block body, a baffle, a protective plate, a limit piece and a buffer assembly, wherein the seismic stop block body is mounted on the top of the cap beam, the baffle plate is mounted on the side wall of the cap beam, the protective plate is detachably mounted on the seismic stop block body through a limit piece, and the buffer assembly is mounted inside the protective plate.
[0007] The limiting member includes a limiting rod, a clamping plate, a sliding block and a telescopic spring. The limiting rod passes through a through hole provided inside the baffle. The sliding block is slidably connected in a sliding groove provided on the side wall of the limiting rod. The clamping plate is rotatably connected in a groove provided on one side of the sliding block through a rotating shaft. The telescopic spring is fixedly connected between the clamping plate and the inner wall of the sliding groove.
[0008] The buffer assembly includes a fixed cylinder, a buffer plate, a buffer spring, a buffer block and a movable rod. The fixed cylinder is threadedly connected to the inside of the protective plate, the buffer spring is installed in the inside of the fixed cylinder, the buffer plate is fixedly connected to one side of the fixed cylinder, the movable rod is fixedly connected to the side of the buffer plate away from the buffer spring, and the buffer block is fixedly connected to the side of the movable rod away from the buffer plate.
[0009] By adopting the above technical solution, when the main beam hits the buffer assembly and the protective plate on the protective plate during an earthquake, if the protective plate and the buffer assembly are worn or damaged, the clamping plates on the upper and lower sides can be pressed to expand and contract the telescopic spring, and the clamping plates can be moved into the interior of the sliding groove. After that, the limiting rod can be pulled out of the through hole, so that the protective plate can be removed from the anti-seismic block body, and the fixed tube can be driven to rotate by rotating the buffer block to remove it from the threaded groove, thereby facilitating the replacement of damaged buffer assemblies and reducing maintenance costs.
[0010] Furthermore, the top and bottom of the buffer plate are fixedly connected with a limiting slide block, the inner top wall and the inner bottom wall of the fixed cylinder are provided with a limiting slide groove, and the limiting slide block is slidably connected inside the limiting slide groove.
[0011] By adopting the above technical solution, by setting a limit sliding block slidably connected to the inside of the limit sliding groove, the fixed cylinder can be driven to rotate when the buffer block is rotated.
[0012] Furthermore, one end of the movable rod away from the buffer plate passes through the fixed tube and extends to the outside, the buffer block is a circular block, and a plurality of buffer protrusions are installed on one side of the buffer block close to the protective plate.
[0013] By adopting the above technical solution, the buffering protrusion is made of rubber material, and when the buffering block is impacted, the buffering protrusion plays a preliminary buffering effect.
[0014] Furthermore, a plurality of thread grooves are formed on the outer wall of the protective plate, and the fixing tubes are threadedly connected inside the thread grooves, and the number of the fixing tubes is the same as the number of the thread grooves.
[0015] By adopting the above technical solution, by setting the fixing cylinder to be threadedly connected inside the thread groove, it is convenient to disassemble the entire buffer assembly from the protective plate, so that it is convenient to replace only the damaged buffer assembly.
[0016] Furthermore, a rubber pad is installed on the outer wall of the anti-seismic stopper body, and the protective plate is attached to a side of the rubber pad away from the anti-seismic stopper body.
[0017] By adopting the above technical solution, the rubber pad is provided to further achieve a buffering effect, thereby alleviating the impact caused by the collision on the anti-vibration block body.
[0018] Furthermore, a plurality of steel bars are installed inside the anti-seismic stopper body, and the steel bars and the anti-seismic stopper body are integrally cast.
[0019] By adopting the above technical solution and arranging steel bars, the structural strength and seismic resistance of the seismic stop block body are increased.
[0020] Furthermore, a T-shaped slider is fixed to one side of the sliding block close to the limiting rod, a T-shaped slot is provided inside the limiting rod and is located on one side of the sliding slot, and the T-shaped slider is slidably connected inside the T-shaped slot.
[0021] By adopting the above technical solution, a T-shaped slider is provided to be slidably connected inside the limiting rod so that the clamping plate can move into the sliding groove when pressed downward.
[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0023] When the main beam of the concrete bridge hits the buffer assembly and the protective plate on the protective plate during an earthquake, if the protective plate and the buffer assembly are worn or damaged, the clamping plates on the upper and lower sides can be pressed to expand and contract the telescopic spring, so that the clamping plates can be moved into the sliding groove. After that, the limit rod can be pulled out of the through hole, so that the protective plate can be removed from the anti-seismic block body, and the buffer block can be rotated to drive the fixing tube to rotate so that the protective plate can be removed from the threaded groove, thereby facilitating the replacement of damaged buffer assemblies and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a cross-sectional view of the structure of this application;
[0025] Figure 2 For the structure of this application Figure 1 A magnified view of the structure at center A;
[0026] Figure 3 For the structure of this application Figure 1 A magnified view of the structure at B in the middle;
[0027] Figure 4 A three-dimensional diagram of the sliding block of the structure of the present application.
[0028] In the figure: 1. cap beam; 2. protective plate; 3. rubber pad; 4. anti-seismic block body; 5. steel bar; 6. baffle; 7. sliding block; 8. groove; 9. T-shaped slider; 10. clamping plate; 11. through hole; 12. limit rod; 13. telescopic spring; 14. T-shaped slide groove; 15. sliding groove; 16. movable rod; 17. buffer block; 18. buffer plate; 19. threaded groove; 20. buffer spring; 21. plug rod; 22. slot; 23. fixing cylinder. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0030] See also Figure 1-3 A seismic stopper for a concrete bridge in this embodiment includes a cap beam 1, a seismic stopper body 4, a baffle 6, a protective plate 2, a limiter and a buffer assembly. The seismic stopper body 4 is installed on the top of the cap beam 1, the baffle 6 is installed on the side wall of the cap beam 1, the protective plate 2 is detachably installed on the seismic stopper body 4 through a limiter, and the buffer assembly is installed inside the protective plate 2.
[0031] Among them, the seismic block body 4 is made of ultra-high performance concrete, which is a new type of concrete material with extremely high strength, high durability and excellent seismic resistance.
[0032] See also Figure 1 , Figure 3 , Figure 4 The limit member includes a limit rod 12, a card plate 10, a sliding block 7 and a telescopic spring 13. The limit rod 12 passes through a through hole 11 provided inside the baffle 6. The sliding block 7 is slidably connected in a sliding groove 15 provided on the side wall of the limit rod 12. The card plate 10 is rotatably connected in a groove 8 provided on one side of the sliding block 7 through a rotating shaft. The telescopic spring 13 is fixedly connected between the card plate 10 and the inner wall of the sliding groove 15. A rubber pad 3 is installed on the outer wall of the anti-seismic block body 4. The protective plate 2 is attached to the side of the rubber pad 3 away from the anti-seismic block body 4. A plurality of plug rods 21 are fixedly connected to the inner wall of the plug rod 21. The plug rod 21 passes through the rubber pad 3 and is inserted into the inside of the slot 22. A T-shaped slider 9 is fixed on the side of the sliding block 7 close to the limit rod 12. A T-shaped slide groove 14 located on one side of the slide groove 15 is provided inside the limit rod 12, and the T-shaped slide groove 9 is slidably connected inside the T-shaped slide groove 14.
[0033] Among them, by setting a T-shaped slider 9 to be slidably connected to the inside of the limit rod 12, the card plate 10 can move into the inside of the sliding groove 15 when pressed down, and the two opened card plates 10 have a limiting effect, making it difficult for the limit rod 12 to be pulled out from the through hole 11. When the limit rod 12 needs to be pulled out, the two card plates 10 are pressed relatively to move into the inside of the sliding groove 15, and then it can be pulled out.
[0034] It is worth mentioning that the arrangement of the groove 8 has the effect of limiting the rotation range of the clamping plate 10 , so that the clamping plate 10 can only move to one side of the sliding groove 15 .
[0035] See also Figure 1 , Figure 2 The buffer assembly includes a fixed cylinder 23, a buffer plate 18, a buffer spring 20, a buffer block 17 and a movable rod 16. The fixed cylinder 23 is threadedly connected to the inside of the protective plate 2, the buffer spring 20 is installed in the inside of the fixed cylinder 23, the buffer plate 18 is fixedly connected to one side of the fixed cylinder 23, the movable rod 16 is fixedly connected to the side of the buffer plate 18 away from the buffer spring 20, the buffer block 17 is fixedly connected to the side of the movable rod 16 away from the buffer plate 18, the top and bottom of the buffer plate 18 are fixedly connected to the limiting slider, the inner top wall and the inner bottom wall of the fixed cylinder 23 are provided with limiting slide grooves, and the limiting slider is slidably connected to the inside of the limiting slide groove.
[0036] One end of the movable rod 16 away from the buffer plate 18 passes through the fixed tube 23 and extends to the outside. The buffer block 17 is a circular block. A plurality of buffer protrusions are installed on one side of the buffer block 17 close to the protective plate 2 .
[0037] It can be understood that by setting a limit slider slidably connected to the inside of the limit slide groove, when the buffer block 17 is rotated, the fixed cylinder 23 can be driven to rotate. The buffer protrusion is made of rubber material. When the buffer block 17 is hit, the buffer protrusion plays a preliminary buffering effect.
[0038] See also Figure 1 The outer wall of the protective plate 2 is provided with a plurality of thread grooves 19 , and the fixing tubes 23 are threadedly connected to the inside of the thread grooves 19 , and the number of the fixing tubes 23 is the same as the number of the thread grooves 19 .
[0039] Among them, by setting up multiple buffer components, the bridge first uses the buffer components to buffer the impact force before colliding with the protective plate 2, and then further buffers through the rubber pad 3, thereby increasing the service life of the anti-seismic block body 4.
[0040] It is worth mentioning that, by providing the fixing tube 23 to be threadedly connected to the inside of the thread groove 19 , it is convenient to remove the entire buffer assembly from the protective plate 2 , thereby facilitating the replacement of only the damaged buffer assembly.
[0041] See also Figure 1A plurality of steel bars 5 are installed inside the anti-seismic stopper body 4. The steel bars 5 are integrally cast with the anti-seismic stopper body 4. By providing the steel bars 5, the structural strength and anti-seismic performance of the anti-seismic stopper body 4 are increased.
[0042] The working principle of the above embodiment is as follows: when the protective plate 2 is damaged and needs to be replaced, the telescopic spring 13 is extended and retracted by pressing the upper and lower sides of the card plate 10, and the T-shaped slider 9 is made to slide in the T-shaped slide groove 14, so that the card plate 10 can be moved into the interior of the sliding groove 15, and then the limit rod 12 can be pulled out from the through hole 11, and the protective plate 2 can be translated to pull the insertion rod 21 out of the slot 22, so that the protective plate 2 can be removed from the anti-seismic block body 4. If the buffer assembly needs to be replaced, the fixed cylinder 23 can be driven to rotate by rotating the buffer block 17 so that it can be moved out of the threaded groove 19, thereby facilitating the replacement of damaged buffer assemblies and reducing maintenance costs.
[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0044] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A concrete bridge anti-seismic block, comprising a cap beam (1), an anti-seismic block body (4), a baffle (6), a protective plate (2), a stopper and a buffer assembly, Features: The anti-seismic stopper body (4) is mounted on the top of the cap beam (1), the baffle plate (6) is mounted on the side wall of the cap beam (1), the protective plate (2) is detachably mounted on the anti-seismic stopper body (4) via a limiting member, and the buffer assembly is mounted inside the protective plate (2); The limiting member comprises a limiting rod (12), a clamping plate (10), a sliding block (7) and a telescopic spring (13); the limiting rod (12) passes through a through hole (11) provided inside the baffle (6); the sliding block (7) is slidably connected in a sliding groove (15) provided on a side wall of the limiting rod (12); the clamping plate (10) is rotatably connected in a groove (8) provided on one side of the sliding block (7) via a rotating shaft; and the telescopic spring (13) is fixedly connected between the clamping plate (10) and the inner wall of the sliding groove (15); The buffer assembly comprises a fixed cylinder (23), a buffer plate (18), a buffer spring (20), a buffer block (17) and a movable rod (16); the fixed cylinder (23) is threadedly connected to the interior of the protective plate (2); the buffer spring (20) is installed in the interior of the fixed cylinder (23); the buffer plate (18) is fixedly connected to one side of the fixed cylinder (23); the movable rod (16) is fixedly connected to a side of the buffer plate (18) away from the buffer spring (20); and the buffer block (17) is fixedly connected to a side of the movable rod (16) away from the buffer plate (18).
2. A concrete bridge seismic stopper according to claim 1, Features: The top and bottom of the buffer plate (18) are fixedly connected to a limiting slide block, the inner top wall and the inner bottom wall of the fixed cylinder (23) are both provided with a limiting slide groove, and the limiting slide block is slidably connected inside the limiting slide groove.
3. The concrete bridge anti-seismic stopper according to claim 1, Features: One end of the movable rod (16) away from the buffer plate (18) passes through the fixed tube (23) and extends to the outside. The buffer block (17) is a circular block. A plurality of buffer protrusions are installed on one side of the buffer block (17) close to the protective plate (2).
4. The concrete bridge anti-seismic stopper according to claim 1, Features: The outer wall of the protective plate (2) is provided with a plurality of thread grooves (19), the fixing cylinder (23) is threadedly connected inside the thread grooves (19), and the number of the fixing cylinders (23) is the same as the number of the thread grooves (19).
5. The concrete bridge anti-seismic stopper according to claim 1, Features: A rubber pad (3) is installed on the outer wall of the anti-vibration stopper body (4), and the protective plate (2) is attached to a side of the rubber pad (3) away from the anti-vibration stopper body (4).
6. The concrete bridge anti-seismic stopper according to claim 1, Features: A plurality of steel bars (5) are installed inside the anti-seismic stopper body (4), and the steel bars (5) and the anti-seismic stopper body (4) are integrally cast and formed.
7. The concrete bridge anti-seismic stopper according to claim 1, Features: A T-shaped sliding block (9) is fixed to one side of the sliding block (7) close to the limiting rod (12); a T-shaped sliding groove (14) located on one side of the sliding groove (15) is provided inside the limiting rod (12); and the T-shaped sliding block (9) is slidably connected inside the T-shaped sliding groove (14).