CN201502112U - Composite seismic isolation bearing with spiral-coiled spring friction pendulum - Google Patents
Composite seismic isolation bearing with spiral-coiled spring friction pendulum Download PDFInfo
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- CN201502112U CN201502112U CN2009200993714U CN200920099371U CN201502112U CN 201502112 U CN201502112 U CN 201502112U CN 2009200993714 U CN2009200993714 U CN 2009200993714U CN 200920099371 U CN200920099371 U CN 200920099371U CN 201502112 U CN201502112 U CN 201502112U
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- coiled spring
- spiral
- polytetrafluoroethylene
- friction pendulum
- seismic isolation
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Abstract
Disclosed is a composite seismic isolation bearing with a spiral-coiled spring friction pendulum. From available seismic records, every seismic record has specific dominant frequency, that is to say certain frequency is provided with abundant energy. An ordinary non seismic isolation multi-storey building has high rigidity and short period, the basic period of the building lies exactly in the frequency range with the most seismic input energy, therefore corresponding acceleration response of the building is much larger than the ground movement. Structural seismic response can be reduced if structural movement frequency misses the dominant frequency containing abundant energy. The composite seismic isolation bearing with a spiral-coiled spring friction pendulum comprises a metallic cylindrical spiral-coiled spring 4, the upper portion of the metallic cylindrical spiral-coiled spring 4 extends into a polytetrafluoroethylene hollow circular rod 5, and a convex spherical surface 6 is arranged on the upper portion of the polytetrafluoroethylene hollow circular rod 5 and contacts with an upper bearing plate 9 via a polytetrafluoroethylene thin plate 7. The contact surface of the polytetrafluoroethylene thin plate 7 with the upper bearing plate 9 is a smooth spherical surface, the edge of the smooth spherical surface is welded with an annular limiting stopper 8, and the upper bearing plate 9 is connected to an upper cushion cap beam 10 via upper embedded reinforcing steel bars 11. The metallic cylindrical spiral-coiled spring 4 is fixed on a lower cushion cap plate 3 which is connected to a lower cushion cap beam 2 via lower embedded reinforcing steel bars 1. The composite seismic isolation bearing with a spiral-coiled spring friction pendulum is capable of resisting possible future strong earthquakes.
Description
Technical field:
The present invention relates to a kind of coil spring friction pendulum combined shock isolating pedestal.
Background technology:
From the seismographic record obtained as can be seen, because earthquake mechanism, different apart from distance and place soil layer property, each seismographic record all has its specific dominant frequency, promptly has abundant energy on some frequency.The rigidity of common non-shock insulation tier building is big, the cycle short, and its basic cycle is just in time imported on the frequency range of energy maximum in earthquake, so the relevant acceleration reaction is more much bigger than ground motion.If make the frequency of structure motion miss the abundant dominant frequency of these energy contents, just can reduce the seismic response of structure.
Summary of the invention:
The purpose of this invention is to provide a kind of coil spring friction pendulum combined shock isolating pedestal.
Above-mentioned purpose realizes by following technical scheme:
A kind of coil spring friction pendulum combined shock isolating pedestal, its composition comprises: be fixed on down the round metal cylindricality helical spring base on the apron piece, described helical spring top extend in the hollow round bar of polytetrafluoroethylene (PTFE) convex spherical, described convex spherical contacts with top deck by the polytetrafluoroethylene (PTFE) thin plate, and described top deck links to each other with last apron piece.
Further, described coil spring friction pendulum combined shock isolating pedestal top deck bottom is a smooth sphere, and the radius of the hollow round bar of described polytetrafluoroethylene (PTFE) convex spherical is consistent with the top deck smooth sphere, but the convex spherical chord length is less than the chord length of top deck.
Coil spring friction pendulum combined shock isolating pedestal, its composition comprises: 1, top deck, 2, the polytetrafluoroethylene (PTFE) bed course, 3, a seat body.Propping up seat body is made up of round metal cylindricality helical spring and the hollow round bar of polytetrafluoroethylene (PTFE) convex spherical.Described seat body convex spherical contacts with top deck, is fixed with embedded bar on the described top deck, is provided with bottom deck below described the seat body, is welded with down embedded bar under the described bottom deck.
This technical scheme has following beneficial effect:
1, coil spring friction pendulum combined shock isolating pedestal be arranged on building the bottom and the basis end face between, separate on the basis in making superstructure and being cemented in ground, the natural vibration period of extending structure.If the damping of building is constant, then acceleration response is greatly diminished, thereby reduces the earthquake response of structure, hinder seismic wave to the top structure-borne, reduce or eliminated the damage of structural element, guaranteed the safety of building better, reach the purpose of structure " no collapsing with strong earthquake ".Therefore the present invention can be used for resisting following contingent vibrations consumingly.
2, the slide plane of coil spring friction pendulum combined shock isolating pedestal device is a sphere, and dead load and vertical geological process are provided by helical spring restoring force.The distinctive circular sliding surface of coil spring friction pendulum shock isolating pedestal has from limit, from reset function and good stability of vibration it, need not to set up damping to concentric mechanism, makes it more easy in actual applications, increases the reliability of earthquake isolating equipment.
3, round metal cylindricality helical spring can also effectively be resisted vertical geological process, has effectively remedied the shortcoming that general friction-pendulum shock-insulation support can only be resisted horizontal earthquake action
4, the present invention is not particularly limited the form of structure and the number of plies, easy construction, but following applicable elements is arranged:
(1) more complete apron piece is arranged.
(2) superstructure structure connection (as collar tie beam, constructional column etc.) is more
Description of drawings: the 1st, the structural representation of this product.Description of reference numerals is as follows:
---following embedded bar; 2---following apron piece; 3---following bearing sheet; 4---round metal cylindricality helical spring; 5---the hollow round bar of polytetrafluoroethylene (PTFE); 6---convex spherical; 7---the polytetrafluoroethylene (PTFE) thin plate; 8---the annular stop device; 9---top deck; 10---go up apron piece; 11---go up embedded bar
The specific embodiment:
Embodiment 1:
Coil spring friction pendulum combined shock isolating pedestal, its composition comprises, round metal cylindricality helical spring 4, round metal cylindricality helical spring 4 tops extend in the hollow round bar 5 of polytetrafluoroethylene (PTFE), the hollow round bar of polytetrafluoroethylene (PTFE) 5 tops are convex spherical 6, convex spherical 6 contacts with top deck 9 by polytetrafluoroethylene (PTFE) thin plate 7, and round metal cylindricality helical spring 4 is fixed on down on the bearing sheet 3, and embedded bar 1 linked to each other with following apron piece 2 under following bearing sheet 3 passed through.
Embodiment 2:
Above-mentioned coil spring friction pendulum combined shock isolating pedestal, described top deck 9 soffits are smooth sphere, described top deck 9 links to each other with last apron piece 10 by last embedded bar 11, after the sphere of seat body (helical spring 4, the hollow round bar 5 of a polytetrafluoroethylene (PTFE)) relative top deck 9 of end face slides, the gravity of superstructure provides a restoring force of getting back to former balance position can for the top cap, convex spherical 6 radiuses of the hollow round bar 5 of described polytetrafluoroethylene (PTFE) are consistent with top deck 9 smooth spheres, but the convex spherical chord length will be controlled at 1/3～1/4 of top deck chord length.
The course of work is described:
Above-mentioned coil spring friction pendulum combined shock isolating pedestal for newly constructed house, will consider that bearing respectively needs one deck apron piece up and down when design, guarantee that each becomes whole to the bearing layer up and down.
In the middle of when shake takes place doughtily, the horizontal rigidity of earthquake isolating equipment is less, frictional force between hollow round bar 5 of polytetrafluoroethylene (PTFE) and the polytetrafluoroethylene (PTFE) thin plate 7 is very little, structure is the occurred level Flexible Sliding about this layer, the antidetonation system of " rigidity " the is become isolation structure system of " flexibility ", prolong (T=2～4s) for example its natural vibration period greatly, away from (Ts=0.2～1.2s) and the place eigenperiod (Tg=0.2～1.0s) natural vibration period of superstructure, thereby ground vibration is separated effectively, reduce the earthquake response of superstructure significantly.Round metal cylindricality helical spring 4 can not only effectively be resisted vertical geological process, also has the characteristic that elastic deformation, elasticity are recovered, born vertical load and earthquake energy simultaneously.
The effect of coil spring friction pendulum combined shock isolating pedestal is: the total weight of one side support of buildings, can prolong the natural vibration period of building on the other hand, the fundamental frequency of structure is in outside the high-energy seismic frequency scope, thereby can reduces the earthquake response of building effectively.Friction-pendulum shock-insulation support not only can not be lost its supporting capacity when support of buildings, but also wants to bear the big displacement between basis and the superstructure.
For have housing, when carrying out the antidetonation transformation, should implement as follows:
(1) security protection:, guarantee the safety during the damaged housing construction at carrying out necessary support, protection with the dangerous situation that occurs is whole or local to the house behind the house foundation periphery backfill excavation;
(2) excavation: in light of the circumstances, formulate the position that needs jacking, and determine the scope and the degree of depth of excavation of foundation pit in view of the above.The purpose of excavation is to create working space for cutting apart basis and ground;
(3) cut off: the stake in absolute altitude place, cushion cap bottom surface cuts off scope of design, and otch roughly flattened.Cut-out is from inside to outside in proper order, and underpins as temporary load(ing) with sleeper;
(4) jacking: according to engineering design, the air cushion jack of design quantity is filled in stake top after the cut-out, air cushion is inflated to a little higher than design height, underpins with sleeper, and the air cushion venting is removed, and on the stake top shock isolating pedestal is installed;
(5) basis protection: otch is used the steel strengthening member up and down, and with the high fluidity pea gravel concreten otch is sealed;
(6) basic earthwork backfill, compacting;
(7) superstructure trimming, body of wall adopt ferro-cement to reinforce.
Claims (2)
1. coil spring friction pendulum combined shock isolating pedestal, its composition comprises: be fixed on down the round metal cylindricality helical spring base on the apron piece, described helical spring top extend in the hollow round bar of polytetrafluoroethylene (PTFE) convex spherical, described convex spherical contacts with top deck by the polytetrafluoroethylene (PTFE) thin plate, and described top deck links to each other with last apron piece.
2. according to claim 1 described coil spring friction pendulum combined shock isolating pedestal, it is characterized in that: described top deck bottom is a smooth sphere, the radius of the hollow round bar of described polytetrafluoroethylene (PTFE) convex spherical is consistent with the top deck smooth sphere, but the convex spherical chord length is less than the chord length of top deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200993714U CN201502112U (en) | 2009-03-24 | 2009-03-24 | Composite seismic isolation bearing with spiral-coiled spring friction pendulum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200993714U CN201502112U (en) | 2009-03-24 | 2009-03-24 | Composite seismic isolation bearing with spiral-coiled spring friction pendulum |
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| Publication Number | Publication Date |
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| CN201502112U true CN201502112U (en) | 2010-06-09 |
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| CN2009200993714U Expired - Fee Related CN201502112U (en) | 2009-03-24 | 2009-03-24 | Composite seismic isolation bearing with spiral-coiled spring friction pendulum |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525953B (en) * | 2009-04-15 | 2011-05-18 | 杨海旭 | Coil spring friction pendulum combined shock isolator |
| CN102367674A (en) * | 2011-11-08 | 2012-03-07 | 北京工业大学 | Suspension type multi-dimensional input horizontal multi-directional shearing model casing device |
| CN104372554A (en) * | 2014-10-17 | 2015-02-25 | 年福东 | Upper support for lifting type space dyeing machine |
| CN104453268A (en) * | 2014-11-11 | 2015-03-25 | 云南震安减震技术有限公司 | Method for replacing seismic isolation rubber bearing with section steel beams |
| CN104776143A (en) * | 2015-03-26 | 2015-07-15 | 上海大学 | Damping-variable friction damper capable of preventing lateral buckling |
| CN106836929A (en) * | 2017-02-23 | 2017-06-13 | 同济大学 | A kind of friction pendulum support Seismic Isolation of Isolation Layer tension stopping means |
| CN108331415A (en) * | 2017-01-20 | 2018-07-27 | 文昌株式会社 | Water tank with the waterproof construction using composite plate |
-
2009
- 2009-03-24 CN CN2009200993714U patent/CN201502112U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525953B (en) * | 2009-04-15 | 2011-05-18 | 杨海旭 | Coil spring friction pendulum combined shock isolator |
| CN102367674A (en) * | 2011-11-08 | 2012-03-07 | 北京工业大学 | Suspension type multi-dimensional input horizontal multi-directional shearing model casing device |
| CN102367674B (en) * | 2011-11-08 | 2014-02-12 | 北京工业大学 | Suspension type multi-dimensional input horizontal multi-directional shearing model casing device |
| CN104372554A (en) * | 2014-10-17 | 2015-02-25 | 年福东 | Upper support for lifting type space dyeing machine |
| CN104453268A (en) * | 2014-11-11 | 2015-03-25 | 云南震安减震技术有限公司 | Method for replacing seismic isolation rubber bearing with section steel beams |
| CN104453268B (en) * | 2014-11-11 | 2016-08-24 | 云南震安减震技术有限公司 | A kind of method using section steel beam to change shock insulation rubber bearing |
| CN104776143A (en) * | 2015-03-26 | 2015-07-15 | 上海大学 | Damping-variable friction damper capable of preventing lateral buckling |
| CN108331415A (en) * | 2017-01-20 | 2018-07-27 | 文昌株式会社 | Water tank with the waterproof construction using composite plate |
| CN108331415B (en) * | 2017-01-20 | 2020-08-14 | 文昌株式会社 | Water tank having waterproof structure using composite board |
| CN106836929A (en) * | 2017-02-23 | 2017-06-13 | 同济大学 | A kind of friction pendulum support Seismic Isolation of Isolation Layer tension stopping means |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20120324 |