CN1128913C - Roll-swing type earthquake isolator - Google Patents
Roll-swing type earthquake isolator Download PDFInfo
- Publication number
- CN1128913C CN1128913C CN 98112897 CN98112897A CN1128913C CN 1128913 C CN1128913 C CN 1128913C CN 98112897 CN98112897 CN 98112897 CN 98112897 A CN98112897 A CN 98112897A CN 1128913 C CN1128913 C CN 1128913C
- Authority
- CN
- China
- Prior art keywords
- roll
- swing type
- circular arc
- spin
- radius
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a rolling pendulum type seismic vibration isolator which comprises a spherical base. A circular arc is arranged in the middle of the spherical base, and a rolling ball is arranged in the circular arc in a rolling mode; a flat bottom support is arranged on the rolling ball, and the flat bottom support is fixed on the spherical base through a friction flat plate; rolling vibration type movement can be formed in the range of the movement of the flat bottom support. When an earthquake breaks out, because the frequency is large, the obvious vibration isolating effect can be achieved, and the present invention has the advantages of simple structure and high reliability.
Description
The present invention relates to a kind of seismic isolation device, particularly a kind of roll-swing type earthquake isolator.
The prevention earthquake disaster is thought a technical barrier always, and now rubber, steel plate laminations used form column, with the supporting building construction more.When earthquake, the shear strain meeting of each layer of rubber relaxes the jigging motion of ground, because it need build a basement, expense is big, is difficult to be applied to general civilian construction.
The bobbin type vibration isolation device of Japan's release at present is that spin is rolled on taper seat, utilizes a brood of little ball between foundations and spin, to realize the relative motion between the two.Damping force is from the pump type damper, this scenario-frame complexity, the as easy as rolling off a log crushing of spin, poor reliability.
Chinese patent application 96115840.9 (publication number: CN 1144871A) also disclose a kind of building, bridge Aseismic device, it adopts spheroid on the recessed spheroid of two mutual make-ups, instantly concave spherical surface body vibrations the time have driven spheroid at it down and roll on the concave spherical surface on it, meanwhile, its fovea superior spheroid on spheroid but keeps static, dredges thereby reached shock-absorbing.This structure only adapts to less earthquake intensity rank, and when earthquake magnitude did not increase, its stability was just weaker.
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, propose a kind of roll-swing type earthquake isolator, in its range of movement, form a kind of rolling pendulum motion, when earthquake takes place,, can reach tangible isolating affection because frequency ratio is bigger, and the reliability height, simple in structure.
The technical solution used in the present invention is, the roll-swing type earthquake isolator, comprise a sphere base 8, one circular arc 9 is arranged in the middle of the sphere base 8, roll in the circular arc 9 and dispose a spin 7, place a flat supporting 2 on the spin 7, flat supporting 2 is fixed on the sphere base 8 by holddown spring 4, adjustment screw 3 by friction plates 6, adjusts configuration one stop 5 between screw 3 and the friction plates 6.Arc radius is that R and spin r dispose by following relation:
F wherein
nBe construction platform 1, the intrinsic frequency of the body that promptly shakes, W is the weight of construction platform, N
sNormal pressure for 6 pairs of flat supportings 2 of friction plates.
Fig. 1 is a structure principle chart of the present invention.
Fig. 2 is the experimental data figure of the embodiment of the invention.
Below in conjunction with accompanying drawing structural principle of the present invention and operating principle are done detailed explanation.
Referring to Fig. 1, the present invention includes a sphere base 8, it is the circular arc 9 of R that sphere base 8 intermediate configurations have a radius, configuration one radius that rolls in the circular arc 9 is the spin 7 of r, place a flat supporting 2 on the spin 7, flat supporting 2 is fixed on the sphere base 8 by holddown spring 4, adjustment screw 3 by friction plates 6, adjusts configuration one stop 5 between screw 3 and the friction plates 6.In addition, among the figure, the 1st, by the construction platform of flat supporting 2 supportings, radius is that R and r dispose by following relation:
F wherein
nBe construction platform 1, the intrinsic frequency of the body that promptly shakes, W is the weight of construction platform 1, N
sBe the normal pressure of 6 pairs of flat supportings 2 of friction plates, R is the radius of circular arc 9, and r is the radius of spin 7.
Contact with base 8 below the spin 7, contact with flat supporting 2 above, when range of movement was little, upper and lower contact point all belonged to pure rolling.When spin 7 is rolled, form the typical pendulum that rolls among a small circle.The intrinsic frequency of swing depends mainly on spherical radius r.So it is very low that intrinsic frequency can design.Thereby the higher forcing frequency ratio of also easy acquisition.The dry friction that flat supporting 2 and friction plates are 6 can be by the holddown spring adjustment.Thereby also acquisition the best easily rubs and best friction parameter.So also just elimination and control method are provided for the resonance region peak amplitude that may occur.
This vibration isolator is simple in structure, and vibration isolating effect is good, and no consumable accessory need not frequent maintenance, and has certain capability of anti-wind.When meeting extreme wind, vibration isolator meeting self-locking after the wind, can automatically reset.
With reference to Fig. 2, in mechanical property test, output, input are and subtract harmonic wave.Earthquake is represented in input, and the output representative is behind vibration isolator, and the earthquake that construction platform (being foundations) is experienced is exported and represented transmissibility with the ratio (i.e. output/input) of input, expression vibration isolator usefulness.Now data and the curve adjustment report of the receipts of freight and miscellany that several differences are shaken under the physique amount situation is as follows:
Roll-swing type earthquake isolator test data table (part)
| The physique of shaking amount (kg) | Harmonic frequency (Hz) | Input p-p acceleration (gal) | Output p-p acceleration (gal) | Transmissibility | The earthquake intensity level is transmitted | Curve number |
| 150 | 5.5 | 511.8 | 86.0 | 0.168 | 8 grades → 4.4 grades | ARH8 |
| 225 | 5.5 | 520.7 | 61.7 | 0.118 | 8 grades → 4.9 grades | ARH12 |
| 300 | 3.0 | 562.2 | 95.4 | 0.169 | 8.1 level → 5.5 grades | ARH23 |
Claims (4)
1. the roll-swing type earthquake isolator comprises a sphere base [8], and a circular arc [9] is arranged in the middle of the sphere base [8], roll in the circular arc [9] and dispose a spin [7], it is characterized in that go up in spin [7] and place a flat supporting [2], flat supporting [2] is fixed on the sphere base [8] by friction plates [6].
2. roll-swing type earthquake isolator according to claim 1 is characterized in that, said flat supporting [2] is fixed on the sphere base [8] by holddown spring [4], adjustment screw [3] by friction plates [6].
3. roll-swing type earthquake isolator according to claim 1 and 2 is characterized in that, configuration one stop [5] between said adjustment screw [3] and the friction plates [6].
4. roll-swing type earthquake isolator according to claim 1 is characterized in that, the radius of the radius of said circular arc [9] and spin [7] disposes by following relation:
Wherein: f
nBe the intrinsic frequency of construction platform [1], W is the weight of construction platform [1], N
sBe the normal pressure of friction plates [6] to flat supporting [2], R is the radius of circular arc [9], and r is the radius of spin [7].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112897 CN1128913C (en) | 1998-07-01 | 1998-07-01 | Roll-swing type earthquake isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112897 CN1128913C (en) | 1998-07-01 | 1998-07-01 | Roll-swing type earthquake isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1245241A CN1245241A (en) | 2000-02-23 |
| CN1128913C true CN1128913C (en) | 2003-11-26 |
Family
ID=5222689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98112897 Expired - Fee Related CN1128913C (en) | 1998-07-01 | 1998-07-01 | Roll-swing type earthquake isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128913C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007072777A1 (en) * | 2005-12-21 | 2007-06-28 | Oiles Corporation | Negative rigidity device and vibration isolating construction provided with this negative rigidity device |
| CN102433933B (en) * | 2011-10-12 | 2014-01-22 | 北京工业大学 | Anti-pulling type horizontal roller support |
| CN102425235B (en) * | 2011-10-12 | 2014-04-09 | 北京工业大学 | Anti-pulling universal rolling supporting base |
| CN103307196B (en) * | 2013-06-19 | 2015-01-14 | 同济大学 | Novel tuned mass damper with independent bi-direction rigidity |
| CN105299393B (en) * | 2014-07-15 | 2017-08-01 | 冠研（上海）专利技术有限公司 | Multi-functional shock-proof runners with locking part |
| CN106594144B (en) * | 2016-12-05 | 2018-09-18 | 中国航空规划设计研究总院有限公司 | A kind of locking device and unlock design method of earthquake isolating equipment |
| CN107606046B (en) * | 2017-11-06 | 2018-08-14 | 杭州德泰人防设备有限公司 | A kind of ball type earthquake isolation device |
-
1998
- 1998-07-01 CN CN 98112897 patent/CN1128913C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1245241A (en) | 2000-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4974378A (en) | Seismic-isolator | |
| CN105971148B (en) | Universal swing track brace type tuned mass damper | |
| US4718206A (en) | Apparatus for limiting the effect of vibrations between a structure and its foundation | |
| CN1128913C (en) | Roll-swing type earthquake isolator | |
| CN112240062A (en) | Three-dimensional shock insulation structure system | |
| CN207794356U (en) | A kind of big shake lower caging device of base isolation bearing | |
| JP2002147058A (en) | Base isolation structure for building | |
| JPS6469842A (en) | Vibration absorbing and vibration isolating device | |
| JP4138534B2 (en) | Semi-fixing device for seismic isolation structure | |
| CN201170283Y (en) | Shock insulation apparatus | |
| JP2000266116A (en) | Swinging bearing type base isolation device | |
| JP4439694B2 (en) | High-damping frame of high-rise building | |
| CN205399192U (en) | One -way mobile support in grades combats earthquake on inclined plane | |
| CN213062076U (en) | Building engineering foundation earthquake-resistant structure | |
| CN110924551B (en) | Friction sliding bearing seat vibration reduction structure between ground and building | |
| CN102306472A (en) | Seismic simulation device and aseismatic design | |
| JP3713645B2 (en) | Seismic isolation device using laminated rubber | |
| CN220565429U (en) | Anti-seismic support for building | |
| JPH11325177A (en) | Vibration resistant support device for structure | |
| CN108412066A (en) | A kind of big shake lower caging device of base isolation bearing | |
| CN204803924U (en) | Basis isolating device | |
| JP2001207552A (en) | Trigger device for base isolation mechanism | |
| CN211850119U (en) | Damping device of civil engineering structure | |
| CN214219228U (en) | Steel spring floating plate convenient to install | |
| CN215329334U (en) | Basin-type rubber support anchoring device for newly-built bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |