CN1159502C - Earthquake damping and isolating mechanism - Google Patents
Earthquake damping and isolating mechanism Download PDFInfo
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- CN1159502C CN1159502C CNB021160481A CN02116048A CN1159502C CN 1159502 C CN1159502 C CN 1159502C CN B021160481 A CNB021160481 A CN B021160481A CN 02116048 A CN02116048 A CN 02116048A CN 1159502 C CN1159502 C CN 1159502C
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- alms bowl
- bowl body
- spin
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Abstract
The present invention relates to an earthquake damping and isolating device which is composed of a pot body, a rolling ball, an annular elastic damping body, a cover board, a base and a plurality of springs, wherein concave bottom surfaces (or annular concave curved surfaces) are arranged on both of the pot body and the cover board; each concave bottom surface is composed of a concave spherical crown surface and a concave circular conical surface; the rolling ball is arranged between the cover board and the pot body, is submitted to certain precompression and elastic deformation but does not perform the function of main load bearing; a building steady load is mainly borne by the circular ring-shaped plane of the cover board pressed on the pot body; the annular elastic damping body is arranged on an annular table top in the pot body; the springs are arranged between the pot body and the base. The present invention can ensure the horizontal stiffness and the vertical stiffness of a building during no earthquake in normal times and have the advantages of safety and firmness. When an earthquake occurs, horizontal force (comprising twisting force) submitted by the building can be effectively isolated, absorbed and dissipated. After the earthquake is finished, the building can be automatically reset to the original position. The present invention sufficiently considers the measures for lightening adverse consequences caused by a lift-off phenomenon.
Description
Technical field
The present invention is relevant with earthquake, relates to a kind ofly alleviating and avoiding the earthquake damping and isolating mechanism of earthquake to the infringement of damaging property of building.
Background technology
Earthquake brings great harm for human life's property safety, and the seismic wave that earthquake produces makes building produce the rippling of vertical direction, and the roll and pitch motion and the horizontal torsion of horizontal direction move.Wherein the destructive power maximum is the horizontal vibrating and the torsional shaking of building.Built industry usually with the method antidetonation that increases the building strength and stiffness, this has just increased building costs greatly, has reduced the appearance material ratio of building in the past, makes the main part of building seem that the eldest child is stupid thick.For the drawback that the method antidetonation that solves simple dependence increase building strength and stiffness is brought, domestic and international in recent years, developed multiple earthquake damping and isolating mechanism.Wherein rubber vibration isolation cushion is comparatively typical and uses more earthquake damping and isolating mechanism.Because during no earthquake, the vertical and horizontal rigidity of rubber vibration isolation cushion is still disliked deficiency, and when earthquake took place, horizontal rigidity was bigger than normal, and isolating affection is not good enough, and after earthquake stopped, its ability that automatically resets was relatively poor.
Another kind of earthquake damping and isolating mechanism is made of a base, a cover plate and a spin substantially, and the end face of base is an arc-shaped concave, and the bottom surface of cover plate has arc-shaped concave, places a spin and constitute between the arc-shaped concave of base and cover plate, and its shortcoming is:
1. spin and contacting of base, cover plate are a contact substantially, are to carry fully before the earthquake, can produce load mould under the long-term static load, and spin is broken easily during earthquake, can not play the damper effect;
2. because base and cover plate are arc-shaped concaves, earthquake can not form the return effect of building after finishing under some state status;
3. the phenomenon of lifting from that earthquake produces is not considered.
Summary of the invention
The technical problem to be solved in the present invention is the defective that overcomes above-mentioned prior art, and a kind of earthquake damping and isolating mechanism is provided, and it need not by increasing the strength and stiffness of building, the just destructive lesion that can alleviate and avoid earthquake that building is caused.This earthquake damping and isolating mechanism is installed between the foundation and pile foundation part of building, can play the effect of isolation, buffering, absorption and dissipation seismic wave energy, thereby reach the damper purpose.
Technical solution of the present invention is as follows:
A kind of earthquake damping and isolating mechanism contains spin, cover plate, base, also is provided with alms bowl body, cyclic spring damping body and a plurality of spring, is characterized in:
1. said alms bowl body is one to have the cylindrical shell of concave bottom surfaces, circular table, annular end face and external cylindrical surface, and this concave bottom surfaces is made of spill taper seat and a spill spherical crown surface; The radius of said spill spherical crown surface is slightly larger than the radius of spin, and the bottom surface of this alms bowl body is provided with a plurality of blind cylindrical hole;
2. have a cylindrical boss in the middle of the bottom surface of said cover plate, this cylindrical boss has concave bottom surfaces, and this concave bottom surfaces is made of spill taper seat and a spill spherical crown surface, and the radius of this spill spherical crown surface is slightly larger than the radius of spin; The periphery of this cover plate is a planar annular;
3. the top of said this base has inner cylinder face, and the bottom surface of base is provided with a plurality of and the corresponding blind cylindrical hole of blind cylindrical hole alms bowl body bottom surface;
4. its position relation is:
(1) in each blind cylindrical hole of base, puts into spring;
(2) the blind cylindrical hole alignment springs of alms bowl body is put into base, form between the external cylindrical surface of alms bowl body and the inner cylinder face of base and be slidingly matched;
(3) spin is placed on the spill spherical crown surface place of alms bowl body, the cyclic spring damping body is placed on the circular table of alms bowl body;
Cover cover plate, the spill spherical crown surface of cover plate is pressed on the spin, and the planar annular gland of cover plate is on the circular top plane of the cylindrical shell of alms bowl body.
In the described earthquake damping and isolating mechanism:
The concave bottom surfaces of 1. said alms bowl body is an annular concave curved surface, and the shape of the cross section of this annular concave curved surface is pressed from both sides a circular arc line segment by two oblique line sections and constituted;
2. the concave panel of said cover plate is an annular shape groove, and the shape of the cross section of this annular shape groove is pressed from both sides a circular arc line segment by two oblique line sections and constituted, and forming a circular cross section is taper and arc-shaped surface;
3. between this annular groove and annular groove, be provided with a plurality of spin.
Description of drawings
Fig. 1 is the cross-sectional schematic of the embodiment of the invention 1.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is the schematic diagram of the embodiment of the invention 2.
Fig. 4 is the schematic top plan view of Fig. 3.
Among the figure:
1-alms bowl body 11-concave bottom surfaces 111-spill taper seat 112-spill spherical crown surface 12-circular table 13-circular top plane
14-blind cylindrical hole 15-external cylindrical surface 16-annular groove
The 161-cross section is that the ring-type curved surface 162-cross section of taper is the ring-type curved surface 17-inner cylinder face 2-spin of circular arc
3-cyclic spring damping body 4-cover plate 41-round boss
42-concave bottom surfaces 421-spill taper seat 422-spill spherical crown surface
43-planar annular 44-external cylindrical surface 45-annular groove 451-oblique line section
452-circular arc line segment 5-base 51-inner cylinder face 52-blind cylindrical hole
The 6-spring
The specific embodiment
See also Fig. 1, Fig. 2, Fig. 1, Fig. 2 are respectively cross-sectional schematic and the schematic top plan view of earthquake damping and isolating mechanism embodiment 1 of the present invention.This shows that earthquake damping and isolating mechanism of the present invention mainly is made up of alms bowl body 1, spin 2, cyclic spring damping body 3, cover plate 4, base 5 and spring 6.
Alms bowl body 1: make with the high strength rigid material.The concave bottom surfaces of forming by spill taper seat 111 and spill spherical crown surface 112 on the alms bowl body 1 11, circular table 12, inner cylinder face 17, circular top plane 13, external cylindrical surface 15 and a plurality of blind cylindrical hole 14.The radius of sphere 112 is slightly larger than the radius of spin 2.After spin 2 was subjected to an amount of elastic deformation of precompression generation, proper and spherical crown surface 112 was fitted, and formed tight face contact.
Spin 2: make with high strength, high resiliency, shock proof material.Spin 2 is placed between the spill spherical crown surface 111 and 422 of alms bowl body 1 and cover plate 4.
Cyclic spring damping body 3: make with high resiliency, anti-aging viscous type damping material, be placed on the circular table 12 of alms bowl body 1.
Cover plate 4: make with the high strength rigid material, have round boss 41 in the middle of the bottom surface of cover plate 4, the bottom of this round boss 41 is provided with the concave bottom surfaces 42 of spill taper seat 421 and spill hemisphere face 422 compositions, planar annular 43, external cylindrical surface 44.The radius of spherical crown surface 422 is slightly larger than the radius of spin 2.After spin 2 was subjected to an amount of elastic deformation of precompression generation, proper and spherical crown surface 422 was fitted, and became tight face contact.
Base 5: make by the high strength rigid material, inner cylinder face 51 and several blind cylindrical hole 52 are arranged on the base 5.
Spring 6: make with spring steel.Be placed between the blind cylindrical hole 14 of the corresponding with it alms bowl body 1 of blind cylindrical hole 52 of base 5 and be subjected to elastic compression.
This device damper principle is as follows:
This earthquake damping and isolating mechanism is installed between the foundation and pile foundation part of building, and base 5 is connected with the pile foundation partially rigid, and cover plate 4 is rigidly connected with foundation.
(1) during no earthquake:
The main pipeline of vertical load that building produces is: circular top plane 13 → base, 5 → building pile base section of planar annular 43 → alms bowl body 1 of building foundation part → cover plate 4 → underground.And less relatively by the vertical load of spin 2 transmission, this moment, 2 of spin were born certain precompression and elastic deformation.Because planar annular 43 is that rigidity contacts with circular top plane 13, contact area is bigger, so good vertical stiffness is arranged, when building is subjected to big horizontal load such as storm wind, typhoon, owing between 13 and 43 very big stiction is arranged, can not produce relative slip between 13 and 43, so enough horizontal rigidities are arranged.This device has enough vertical and horizontal rigidities when no earthquake, make building image routine building thing equally have good stable.
When (1) earthquake takes place:
The earthquake statistics data shows that the damage of building is mainly caused by horizontal motion (containing horizontal twist motion) during earthquake.Building does not almost have because of the situation that the vertical direction vibrations are destroyed.Therefore main is that example illustrates that the damper principle of this device is as follows with the horizontal direction earthquake:
When horizontal vibrating is made with a certain acceleration in ground, pile foundation is done to quicken to move with ground together with base 5 and alms bowl body 1, because building has very big inertia, alms bowl body 1 is difficult to do to quicken synchronously to move with alms bowl body 1 by drive cover plate 4 of the frictional force between circular top plane 13 and the planar annular 43 and building, certainly leads to horizontal relative displacement between alms bowl body 1 and the cover plate 4.In the relative horizontal movement process of alms bowl body 1 and cover plate 4, spin 2 is rolled on spill spherical crown surface 112 and 442, because of the radius of spherical crown surface 112 and 422 less, bigger with the slope of spin 2 contact positions, spin 2 is climbed rapidly along spherical crown surface 112 in rolling process, cover plate 4 also climbs rapidly at spin 2 upper edge spherical crown surfaces 422 simultaneously, make building in company with cover plate 4 relative alms bowl body 1 rapid pan-ups, planar annular 43 on the cover plate 4 hightails with circular top plane 13 on the alms bowl body 1 and contacts, and the frictional force between 43 and 13 is disappeared thereupon.43 and 13 emaciated faces from preceding, seismic forces mainly is to transmit by the frictional force between 43 and 13, and 43 and 13 emaciated faces from after, seismic forces can only be by the frictional force between spin 2 and the raceway, cyclic spring damping body 3 and other additional damping devices transmit.Obvious 43 and 13 emaciated faces from after, the main pipeline of seismic forces is cut off, thereby reduces to pass to from ground the seismic forces of building greatly, plays good function of shock insulation.When spin 2 climb with taper seat 111 when 421 contact because the slope at 111 and 421 each point places is less, cover plate 4 relative alms bowl body 1 levels relatively move and the vertical-lift amount that produces is also less.
In alms bowl body 1 and cover plate 4 relative horizontal movement processes, cyclic spring damping body 3 is gradually reduced and is played the effect of buffering and absorption and dissipative part seismic energy.
External cylindrical surface 44 on the cover plate 4 and the inner cylinder face 17 on the alms bowl body 1 can limit the maximum horizontal relative shift between cover plate 4 and the alms bowl body 1, play position-limiting action.
(2) after earthquake stops:
Because all there is certain slope at spherical crown surface 112,422 and taper seat 111,421 each point places, the movement locus terminal point of the spin 2 in this device must be the home position.So no matter which kind of position building is in the horizontal direction, it can both be by the potential energy of own wt generation, and the dump energy of passing to building in moving back and forth seismic process several times all exhausts, and finally accurately resets.
After resetting, because spin 2 is between spherical crown surface 112 and 422, be subjected to certain precompression and elastic deformation, spin 2 after the elastic deformation fits tightly and bears the part vertical load with spherical crown surface 112 and 422, meanwhile, the circular top plane on the planar annular 43 of cover plate 4 and the alms bowl body 1 13 is recovered rigidity and is contacted and bear main vertical load.Building and this device return to the preceding state of shake again.
Energy remaining mainly is consumed absorption by following approach after the earthquake:
A, cyclic spring damping body 3 in deformation process with form dissipative part energy such as heatings.
The energy that friction and distortion dissipated between b, spin 2 and raceway.
C, when cover plate 4 relative alms bowl bodies 1 move near the extreme lower position (promptly shaking preceding home position), the energy of friction consumption in the of short duration contact process between the planar annular 43 and 13.
The additional damping device of installing on d, the building dissipates to the absorption of energy.
(3) adverse effect is lifted from elimination:
Under the bigger situation of vertical direction oscillatory acceleration, might produce between this device cover plate 4 and the alms bowl body 1 and lift from phenomenon, make and produce huge impact power between spin 2 and raceway.Lift from the adverse effect of phenomenon for alleviating, the external cylindrical surface 15 of alms bowl body 1 and the inner cylinder face 51 of base 5 are designed to the state of being slidingly matched this device; Set up several springs 6 between alms bowl body 1 and base, by elastic compression, and elastic force is much larger than the weight of whole alms bowl body 1 in the blind hole of alms bowl body 1 and base 5 for spring 6.When lifting from, promote alms bowl body 1 by spring 6 and in base 5, upwards slide, alms bowl body 1, spin 2 are remained with cover plate 4 contact, the face of lifting from only is the circular contact surface on alms bowl body 1 bottom surface and base top.During the whereabouts, spring 6 can play cushioning effect again, and this just makes the impact of lifting from generation alleviate greatly.Make spin 2 and raceway be unlikely to be damaged.
Secondly, see also Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are analysing and observe of the embodiment of the invention 2 and schematic top plan view, as seen from the figure, earthquake damping and isolating mechanism embodiment 2 of the present invention also is made up of alms bowl body 1, spin 2, cyclic spring damping body 3, cover plate 4, base 5 and spring 6, and its material is identical with the corresponding part of embodiment 1 described device.
Four, the characteristics of apparatus of the present invention:
When 1, no earthquake takes place, because Main Load is by two planar annulars 43 of rigidity contact Bear with circular top plane 13, so this device has enough vertical and horizontal rigidities, build at ordinary times Build thing and can be in very stable state.
2, ball 2 is after bearing an amount of distortion of part vertical load generation, with spherical crown surface 1 12 Form closely with 422 that face contacts, greatly increased vertical bearing and the shock resistance energy of spin Power.
3, on being subjected to horizontal plane during any direction seismic force, because spin 2 is at spherical crown surface 112 With 422 on the effect of climbing fast when rolling, can make rapidly main load plane 43 and 13 Rapidly separate, thereby cut off the main path that seismic force is passed to building, make and pass to building Horizontal seismic force greatly reduce, play significant isolating affection. Separate with 13 when 43 After, cover plate 4 moves by the rolling track of spin 2 in taper seat 111 and 421 together with building.
4, cyclic spring damping body 3 can cushion and absorb the earthquake on the horizontal any direction of dissipation Energy.
5, cover plate 4 and the maximum relative displacement of alms bowl body 1 on horizontal any direction are by alms bowl body 1 On inner cylinder face 17 and the external cylindrical surface 44 on the cover plate 4 limit.
6, when occurring lifting from phenomenon, the elastic force by spring 6 makes alms bowl body 1 in base 5 Upward sliding makes alms bowl body 1, spin 2 remain with cover plate 4 and contacts unlikely disengaging. The alms bowl body 1 when gliding in base 5, and spring 6 plays again cushioning effect. So just can make spin and roll Can not be subjected to excessive shock loading between the road, avoid the damage of spin and raceway.
Claims (2)
1, a kind of earthquake damping and isolating mechanism contains spin (2), cover plate (4), base (5), it is characterized in that:
Has a cylindrical boss (41) in the middle of the bottom surface of 1. said cover plate (4), this cylindrical boss (41) has concave bottom surfaces (42), this concave bottom surfaces (42) is made of a spill taper seat (421) and a spill spherical crown surface (422), and the radius of this spill spherical crown surface (422) is slightly larger than the radius of spin (2); This cover plate (4) has planar annular (43);
2. also be provided with alms bowl body (1) and be one and have the cylindrical shell of concave bottom surfaces (11), circular table (12), circular top plane (13) and external cylindrical surface (15), this concave bottom surfaces (11) is made of a spill taper seat (111) and a spill spherical crown surface (112); The radius of said spill spherical crown surface (112) is slightly larger than the radius of spin (2), and the bottom surface of this alms bowl body (1) is provided with a plurality of blind cylindrical hole (14);
3. also be provided with cyclic spring damping body (3), a plurality of spring (6) and drum shape base (5), have inner cylinder face (51) on this base (5), inner bottom surface is provided with a plurality of and the corresponding blind cylindrical hole of blind cylindrical hole (14) (52) alms bowl body (1) bottom surface;
4. its position relation is:
(1) in the blind cylindrical hole (14) of each blind cylindrical hole (52) of base (5) and alms bowl body (1), puts into spring (6); Form between the external cylindrical surface (15) of alms bowl body (1) and the inner cylinder face (51) of base (5) and be slidingly matched;
(2) the spill spherical crown surface (112) that spin (2) is placed on alms bowl body (1) is located, and cyclic spring damping body (3) is placed on the circular table (12) of alms bowl body (1);
(3) cover cover plate (4), the spill spherical crown surface (422) of cover plate (4) is pressed on the spin (2), and planar annular (43) gland of cover plate (4) is on the circular top plane (13) of alms bowl body (1).
2, a kind of earthquake damping and isolating mechanism contains spin (2), cover plate (4), base (5), it is characterized in that:
Has a cylindrical boss (41) in the middle of the bottom surface of 1. said cover plate (4), this cylindrical boss (41) has concave bottom surfaces (42), this concave bottom surfaces (42) is an annular concave curved surface (45), and the shape of the cross section of this annular concave curved surface (45) is made of two oblique line sections (451) folder, one circular arc line segment (452); The radius of this circular arc line segment (452) is slightly larger than the radius of spin (2); This cover plate (4) has planar annular (43);
2. also be provided with alms bowl body (1) and be one and have the cylindrical shell of concave bottom surfaces (11), circular table (12), circular top plane (13) and external cylindrical surface (15), this concave bottom surfaces (11) is an annular concave curved surface (16), and the shape of the cross section of this annular concave curved surface (16) is made of two oblique line sections (161) folder, one circular arc line segment (162); The radius of this circular arc line segment (162) is slightly larger than the radius of spin (2), and the bottom surface of this alms bowl body (1) is provided with a plurality of blind cylindrical hole (14);
3. also be provided with cyclic spring damping body (3), a plurality of spring (6) and drum shape base (5), have inner cylinder face (51) on this base (5), inner bottom surface is provided with a plurality of and the corresponding blind cylindrical hole of blind cylindrical hole (14) (52) alms bowl body (1) bottom surface;
4. its position relation is:
(1) in the blind cylindrical hole (14) of each blind cylindrical hole (52) of base (5) and alms bowl body (1), puts into spring (6); Form between the external cylindrical surface (15) of alms bowl body (1) and the inner cylinder face (51) of base (5) and be slidingly matched;
(2) the circular arc line segment (162) that spin (2) is placed on alms bowl body (1) is located, and cyclic spring damping body (3) is placed on the circular table (12) of alms bowl body (1);
(3) cover cover plate (4), the circular arc line segment (452) of cover plate (4) is pressed on the spin (2), and planar annular (43) gland of cover plate (4) is on the circular top plane (13) of alms bowl body (1);
(4) between this annular concave curved surface (16) and annular concave curved surface (45), be provided with a plurality of spin (2).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021160481A CN1159502C (en) | 2001-07-06 | 2002-04-28 | Earthquake damping and isolating mechanism |
| PCT/CN2002/000483 WO2003093585A1 (en) | 2002-04-28 | 2002-07-09 | An seismic isolator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01122286 CN1342821A (en) | 2001-04-29 | 2001-07-06 | Earthquake damper and construction method for earthquake-damping building |
| CN01122286.7 | 2001-07-06 | ||
| CNB021160481A CN1159502C (en) | 2001-07-06 | 2002-04-28 | Earthquake damping and isolating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1396353A CN1396353A (en) | 2003-02-12 |
| CN1159502C true CN1159502C (en) | 2004-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021160481A Expired - Fee Related CN1159502C (en) | 2001-07-06 | 2002-04-28 | Earthquake damping and isolating mechanism |
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| Country | Link |
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| CN (1) | CN1159502C (en) |
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2002
- 2002-04-28 CN CNB021160481A patent/CN1159502C/en not_active Expired - Fee Related
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