CN211113147U - Spherical shock absorption and isolation support with easily-replaced limiting device after earthquake - Google Patents
Spherical shock absorption and isolation support with easily-replaced limiting device after earthquake Download PDFInfo
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- CN211113147U CN211113147U CN201921279968.7U CN201921279968U CN211113147U CN 211113147 U CN211113147 U CN 211113147U CN 201921279968 U CN201921279968 U CN 201921279968U CN 211113147 U CN211113147 U CN 211113147U
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Abstract
The utility model provides a ball-type subtracts isolation bearing that back stop device easily changed shakes, the upper and lower side of well bedplate is equipped with bedplate A and bedplate B respectively, the upper and lower surface center of well bedplate is convex spherical, bedplate A and bedplate B are respectively with the one side center department that the upper and lower surface of well bedplate faces mutually for concave spherical, concave spherical cooperatees with convex spherical, stop device all sets up at the both ends of the concave spherical surface of bedplate A, stop device includes the limiting plate, the shearing pin, bending resistance screw and fixture block, set up the draw-in groove that the cross-section that link up the direction of movement both sides face is "Z" shape on the both ends terminal surface of bedplate A's concave spherical surface, the fixture block is established in the draw-in groove with the draw-in groove phase-match card, the limiting plate passes through the shearing pin and bending resistance screw fixation on the surface of fixture block, and make. Through changing the limiting device structure of the spherical seismic isolation bearing, the limiting device is easy to replace on the bridge after the earthquake, the whole bearing does not need to be replaced, the normal operation of the bearing after the earthquake is ensured, and the cost is effectively saved.
Description
Technical Field
The utility model relates to a bridge and building structure field, what specifically says so is a ball-type of stopping means easily changing after shake subtracts isolation bearing.
Background
The limiting device of the spherical seismic isolation and reduction support is a switch for switching the support from a normal state to a seismic isolation and reduction state. The limiting device plays a limiting role under the normal condition and the small earthquake effect, and when the horizontal force borne by the support reaches the design value under the design earthquake, the limiting device is sheared and damaged, the sliding constraint of the support is removed, and the support plays a role in shock absorption and isolation. After the earthquake, the limiting device of the earthquake reduction and isolation support is damaged, the limiting device needs to be replaced smoothly, and the normal operation of the earthquake-reduced and isolation support is ensured.
in the prior design, a support limiting device is usually composed of a shear pin or a shear bolt and a limiting ring (Z L patent numbers 200420010939.8 and 200920254729.6), and whether the limiting device is composed of the limiting ring and the shear pin or the limiting ring and the bolt, the two design methods are that the shear strength of the shear pin or the shear bolt is used as the design horizontal force of the limiting device.
Because the anti-shear pin or the anti-shear bolt and the seat plate A are in tight fit or in threaded connection, the limiting device is damaged and removed after the seismic isolation bearing shakes, but the part of the anti-shear pin or the anti-shear bolt remained in the seat plate A of the bearing is difficult to remove, so that the replacement of the limiting device of the bearing is very difficult.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an easy ball-type of changing of back stop device subtracts isolation bearing, subtracts isolation bearing's stop device structure through the change ball-type, makes and shakes back stop device and easily change on the bridge, need not to change whole support, guarantees to shake the normal operating of back support and effectively saves the cost.
In order to realize the technical purpose, the adopted technical scheme is as follows: a spherical shock absorption and isolation support with an easily replaced limiting device after earthquake comprises a seat plate A, a seat plate B, a middle seat plate and a limiting device, wherein the upper side and the lower side of the middle seat plate are respectively provided with the seat plate A and the seat plate B, the centers of the upper surface and the lower surface of the middle seat plate are convex spherical surfaces, the centers of the seat plate A and the seat plate B which are respectively adjacent to the upper surface and the lower surface of the middle seat plate are concave spherical surfaces, the concave spherical surfaces are matched with the convex spherical surfaces, a spherical friction pair is arranged between the concave spherical surface and the convex spherical surface, two ends of the concave spherical surface of the seat plate A are respectively provided with a limiting device, the limiting devices comprise a limiting plate, a shearing pin, an anti-bending screw and a clamping block, the two end faces of the concave spherical surface of the seat plate A are provided with clamping grooves which penetrate through the two side faces in the moving direction and are Z-shaped in cross section, the clamping blocks are matched with the clamping grooves and clamped in the clamping grooves, the limiting plate is fixed on the surface of the clamping blocks through shearing pins and bending-resistant screws, and the inner side face of the limiting plate is arranged corresponding to the outer side face of the seat plate B in the limiting direction.
The shear pin is disposed outside the buckling-resistant screw.
The two sides of the clamping block in the moving direction are respectively provided with a baffle plate, the baffle plates are fixed on the seat plate A through fastening bolts, and the two sides of the clamping block are limited and fixed.
The utility model has the advantages that:
Through the above, the shearing pin of the spherical seismic isolation and reduction support limiting device is only subjected to the shearing action of the horizontal force of the support, and the bending moment action of the horizontal force of the support on the limiting plate is eliminated through the bending-resistant screw through the Z-shaped clamping groove. Therefore, the shearing pin is guaranteed to be subjected to pure shearing without being subjected to the action of bending moment under the horizontal force, the horizontal limit bearing capacity of the limiting device is determined by the shearing resistance of the shearing pin, the accurate control of the horizontal limit bearing capacity of the limiting device is guaranteed, and the function conversion function of the seismic isolation bearing from the hard-resisting type bearing to the seismic isolation bearing is exerted. The limiting device is in the process of receiving horizontal force, the clamping block and the seat plate A are relatively fixed, and the horizontal force and the bending moment transmitted by the limiting plate are effectively resisted through the matching between the inner clamping groove and the boss. The two sides of the limiting device are fixed by the baffle and the fastening bolt, so that the displacement of the limiting device along the direction of the clamping groove is restrained, and the horizontal stress of the limiting device is effectively guaranteed.
In the earthquake process, the shearing pin is sheared and damaged, the bending-resistant screw is damaged subsequently, the limiting plate loses the limiting effect, the restraint of the support in the limiting direction is relieved, and the horizontal reciprocating sliding is realized through the synthetic effect of the hyperboloid. In the reciprocating sliding process, the frictional resistance is obtained through the sliding surface to dissipate the earthquake capability, and the self-vibration period of the structure is prolonged, so that the earthquake reduction and isolation effect is achieved. After the earthquake, the self weight of the upper structure forms restoring force, so that the support is reset.
After the earthquake, the fastening bolts are firstly screwed out, and the baffle plates on the two sides are dismounted; removing the residual part of the limiting device along the direction of the clamping groove; the replaced limiting device is installed along the direction of the clamping groove again; finally, the baffle plates at the two sides are installed again and are screwed down by fastening bolts until the replacement is finished.
Through realize on the bridge that stop device's change after shaking, and need not the whole change of support, will save the change expense greatly, guarantee to shake the quick recovery of back bridge and pass.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial enlarged view of the limiting device of the present invention.
Fig. 3 is a partial enlarged view of the broken position limiter of the present invention.
Fig. 4 is a partial enlarged view of the abutment stop with the remainder removed.
In the figure, the base plate B, the.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
A spherical shock absorption and isolation support with an easily replaced limiting device after earthquake comprises a seat plate A5, a seat plate B1, a middle seat plate 3 and a limiting device 6, wherein the upper side and the lower side of the middle seat plate 3 are respectively provided with a seat plate A5 and a seat plate B1, namely, a seat plate A5 is arranged above the middle seat plate 3, a seat plate B1 is arranged below the middle seat plate 3, or a seat plate A5 is arranged below the middle seat plate 3, a seat plate B1 is arranged above the middle seat plate, the two arrangement modes do not affect the use of the support, the centers of the upper surface and the lower surface of the middle seat plate 3 are convex spherical surfaces, the centers of the surfaces of the seat plate A5 and the seat plate B1, which are adjacent to the upper surface and the lower surface of the middle seat plate 3, are concave spherical surfaces, the concave spherical surfaces on each side are matched with the convex spherical surfaces, a spherical friction pair is arranged between the concave spherical surface and the convex spherical surface, two ends of the concave spherical surface of the seat plate A5 are both provided with a limiting device 6, the stopper 6 is located at the upper or lower portion of the seat plate a5 depending on the installation direction of the seat plate a when the seat is used.
A lower spherical friction pair is arranged between the support seat plate B and the middle seat plate, and an upper spherical friction pair is arranged between the middle seat plate B and the seat plate A. The lower spherical friction pair and the upper spherical friction pair are both composed of spherical stainless steel sliding plates and spherical non-metallic sliding plates; taking the case that the seat board B is arranged below the middle seat board, the upper part of the seat board B is embedded with a concave spherical non-metallic sliding plate, the bottom of the middle seat board is welded with a convex spherical stainless steel sliding plate, and the spherical stainless steel sliding plate and the non-metallic sliding plate form a lower spherical friction pair; the upper part of the middle seat plate is embedded with a convex spherical non-metallic sliding plate, the bottom of the seat plate A is welded with a concave spherical stainless steel sliding plate, and the spherical stainless steel sliding plate and the non-metallic sliding plate form an upper spherical friction pair.
The limiting device 6 comprises a limiting plate 8, a shearing pin 9, an anti-bending screw 10 and a clamping block 7, clamping grooves 5-1 which are communicated with two side faces in the moving direction and have Z-shaped sections are formed in the surfaces of two ends of a concave spherical surface of the seat plate A5, the clamping grooves 5-1 are inwards opened from the staggered positions of the side faces and the bottom face, so that a seat plate A clamping groove boss is arranged in each clamping groove 5-1, the clamping block 7 is matched with the clamping groove 5-1 and clamped in the clamping groove 5-1, the limiting plate 8 is fixed on the surface of the clamping block 7 through the shearing pin 9 and the anti-bending screw 10, and the inner side face of the limiting plate 8 is arranged corresponding to the outer side face of.
As shown in fig. 2, 3 and 4, the limiting plate is provided with a pin hole connected with the shear pin and a cylindrical hole connected with the bending-resistant screw; the clamping block is provided with a pin hole connected with the shearing pin, a threaded hole connected with the bending-resistant screw and a boss matched with the clamping groove; the limiting direction of the seat plate A is provided with a clamping groove and a lug boss which are matched with the clamping block at two ends of the concave spherical surface; the limiting plate and the clamping block are connected through the shearing pin and the bending-resistant screw. The shearing pin, the limiting plate and the clamping block are connected in a tight fit mode; the nut of the bending-resistant screw is pressed on the limiting plate, and a proper gap is reserved between the screw rod part of the bending-resistant screw and the cylindrical hole of the limiting plate; the bending-resistant screw is connected with the clamping block through threads.
The shear pin 9 is arranged outside the bending-resistant screw 10, so that the horizontal force of the seat plate A is firstly applied to the bending-resistant screw, and the effect of the bending-resistant screw is exerted to the maximum extent.
The replacement steps of the support limiting device are as follows: firstly, screwing out the fastening bolt, and detaching the baffles on the two sides; removing the residual part of the limiting device along the direction of the clamping groove; the replaced limiting device is installed along the direction of the clamping groove again; finally, the baffle plates at the two sides are installed again and are screwed down by fastening bolts until the replacement is finished.
Example 1
A spherical seismic isolation and reduction support with an easily replaced post-earthquake limiting device is provided, and is shown in figure 1. A spherical seismic isolation bearing with a position-limiting device easy to replace comprises a seat plate B1, a lower spherical friction pair 2, a middle seat plate 3, an upper spherical friction pair 4, a seat plate A5, a position-limiting device 6 and the like. The upper portion of well bedplate 3 is equipped with bedplate 5A, and bedplate A5 is connected with the roof beam body, and the below of well bedplate 3 is equipped with bedplate B1, and bedplate B1 is connected with the pier, is provided with down spherical friction pair 2 between support bedplate B1 and the well bedplate 3, is provided with spherical friction pair 4 between well bedplate 3 and the bedplate A5.
All be equipped with stop device 6 in the both sides of the spacing direction of bedplate A, stop device includes limiting plate 8, shear pin 9, bending-resistant screw 10 and fixture block 7, and fixture block 7 passes through shear pin 9 and bending-resistant screw 10 to be fixed in the below of limiting plate 8, and the inboard outside that corresponds bedplate B1 of limiting plate 8 has certain clearance between the two, and this clearance prevents to produce the friction between bedplate B1, nevertheless makes bedplate B1 can not remove at spacing direction. The switch of the clamping block is Z-shaped, the shape enables the seat plate A to have a horizontal direction and a boss matched with the clamping block, and therefore the force applied to the clamping block is the force in the horizontal direction. Baffles can be added on two sides of the mounting direction (moving direction) of the clamping block to prevent the clamping block from being separated from the clamping groove.
Through the invention, the shearing pin 9 of the spherical seismic isolation and reduction support limiting device 6 is only sheared by the horizontal force of the support, and the bending moment effect of the horizontal force of the support on the limiting plate 8 is eliminated through the bending-resistant screw 10. Therefore, the shearing pin 9 is guaranteed to be subjected to pure shearing without being subjected to the action of bending moment under the horizontal force, the horizontal limit bearing capacity of the limiting device 6 is determined by the shearing resistance of the shearing pin 9, the accurate control of the horizontal limit bearing capacity of the limiting device is guaranteed, and the function conversion function of the seismic isolation bearing from the hard-resisting type bearing to the seismic isolation bearing is exerted. In the process of receiving horizontal force, the limiting device 6 is fixed relatively to the seat plate A5 through the fixture block 7 and the seat plate A5, and the horizontal force and the bending moment transmitted by the limiting plate 8 are effectively resisted through the matching between the seat plate A clamping groove 5-1 and the boss 5-2. Two sides of the limiting device 6 are fixed by the baffle 11 and the fastening bolt 12, so that the displacement of the limiting device 6 along the direction of the seat plate A clamping groove 5-1 is restrained, and the horizontal stress of the limiting device 6 is effectively guaranteed.
In the earthquake process, the shearing pin 9 is sheared and damaged, the bending-resistant screw 10 is damaged subsequently, so that the limiting plate 9 loses the limiting effect, the restraint of the support in the limiting direction is released, and the horizontal reciprocating sliding is realized through the synthetic effect of the hyperboloids. In the reciprocating sliding process, the frictional resistance is obtained through the sliding surface to dissipate the earthquake capability, and the self-vibration period of the structure is prolonged, so that the earthquake reduction and isolation effect is achieved. After the earthquake, the self weight of the upper structure forms restoring force, so that the support is reset.
After the earthquake, the fastening bolts 12 are firstly screwed out, and the baffle plates 11 on the two sides are dismounted; removing the residual parts of the limiting device 6 along the direction of the clamping groove 5-1 of the seat plate A; the replaced limiting device 6 is installed along the direction of the clamping groove 5-1 of the seat plate A again; finally, the two side baffles 11 are installed again and are screwed down by the fastening bolts 12 until the replacement is finished.
Through realize on the bridge that stop device 6's change after shaking, and need not the whole change of support, will save the change expense greatly, guarantee to shake the quick recovery of back bridge and pass.
Claims (3)
1. The utility model provides a ball-type of stopper easy change after shake subtracts isolation bearing which characterized in that: comprises a seat board A (5), a seat board B (1), a middle seat board (3) and a limiting device (6), wherein the upper side and the lower side of the middle seat board (3) are respectively provided with the seat board A (5) and the seat board B (1), the centers of the upper surface and the lower surface of the middle seat board (3) are convex spherical surfaces, the centers of one surface of the seat board A (5) and one surface of the seat board B (1) which are adjacent to the upper surface and the lower surface of the middle seat board (3) are respectively concave spherical surfaces, the concave spherical surfaces of all sides are matched with the convex spherical surfaces, a spherical friction pair is arranged between the concave spherical surfaces and the convex spherical surfaces, the two ends of the concave spherical surface of the seat board A (5) are respectively provided with the limiting device (6), the limiting device (6) comprises a limiting plate (8), a shearing pin (9), an anti-bending screw (10) and a clamping block (7), the two end surfaces of the concave spherical surface of the, the clamping block (7) is matched with the clamping groove (5-1) and clamped in the clamping groove (5-1), the limiting plate (8) is fixed on the surface of the clamping block (7) through the shearing pin (9) and the bending-resistant screw (10), and the inner side surface of the limiting plate (8) is arranged corresponding to the outer side surface of the limiting direction of the seat plate B (1).
2. The spherical seismic mitigation and isolation bearing with the easily replaced post-earthquake limiting device as defined in claim 1, is characterized in that: the shear pin (9) is arranged outside the bending-resistant screw (10).
3. The spherical seismic mitigation and isolation bearing with the easily replaced post-earthquake limiting device as defined in claim 1, is characterized in that: the two sides of the fixture block (7) in the moving direction are respectively provided with a baffle (11), the baffles (11) are fixed on the seat plate A (5) through fastening bolts (12), and the fixture block (7) is limited and fixed at two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921279968.7U CN211113147U (en) | 2019-08-08 | 2019-08-08 | Spherical shock absorption and isolation support with easily-replaced limiting device after earthquake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921279968.7U CN211113147U (en) | 2019-08-08 | 2019-08-08 | Spherical shock absorption and isolation support with easily-replaced limiting device after earthquake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211113147U true CN211113147U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921279968.7U Active CN211113147U (en) | 2019-08-08 | 2019-08-08 | Spherical shock absorption and isolation support with easily-replaced limiting device after earthquake |
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| Country | Link |
|---|---|
| CN (1) | CN211113147U (en) |
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- 2019-08-08 CN CN201921279968.7U patent/CN211113147U/en active Active
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |