CN101806097A - Tensile prestress rubber earthquake isolation support - Google Patents

Tensile prestress rubber earthquake isolation support Download PDF

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Publication number
CN101806097A
CN101806097A CN 201010130595 CN201010130595A CN101806097A CN 101806097 A CN101806097 A CN 101806097A CN 201010130595 CN201010130595 CN 201010130595 CN 201010130595 A CN201010130595 A CN 201010130595A CN 101806097 A CN101806097 A CN 101806097A
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CN
China
Prior art keywords
rubber
prestress
steel plate
bearing
tensile
Prior art date
Application number
CN 201010130595
Other languages
Chinese (zh)
Inventor
韩强
杜修力
刘文光
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北京工业大学
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Application filed by 北京工业大学 filed Critical 北京工业大学
Priority to CN 201010130595 priority Critical patent/CN101806097A/en
Publication of CN101806097A publication Critical patent/CN101806097A/en

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Abstract

The invention relates to a prestress rubber earthquake isolation support and belongs to the field of structural earthquake isolation control. The tensile prestress rubber earthquake isolation support consists of upper and lower connecting steel plates, an internal thin steel plate, an internal rubber layer, a prestress steel strand and an anchorage device. The internal thin steel plate and the internal rubber layer are alternately overlapped; and the internal thin steel plate, the internal rubber layer and an external rubber protective layer are connected with the upper and lower connecting steel plates by high-temperature and high-pressure vulcanization, and the internal prestress steel stand is connected with the upper and lower connecting plates by the anchorage device. In the prestress rubber support, the insufficient tensile strength is compensated by the large tensile pressure bearing capacity of the rubber support; and before the support bears a service load, a pressure stress is applied in advanced, so that the support, in high-level earthquake, maintains a pressed or low-tensile stress state for ensuring the safety of a earthquake isolation structure system. The support has a simple structure, applies a clear earthquake isolation mechanism and is suitable for earthquake isolation control of large structures with high earthquake-resistance requirements, such as high-rise buildings, tower structures and large-span bridges.

Description

Tensile prestress rubber earthquake isolation support
Technical field
The present invention relates to structure shock isolating pedestal devices such as building, bridge, especially relate to a kind of tensile prestress rubber earthquake isolation support that is applied to large-scale structure such as highrise building, pyramidal structure and Longspan Bridge.
Background technology
In earthquake, bring into play due function in order to ensure structure such as building, bridges, reduce earthquake disaster, seismic isolation technology is as a kind of effective structural damping control technology, be subjected to the extensive concern of engineering and academia, and at home and abroad be widely used in the engineering structures antidetonations such as building, bridge.The shock isolating pedestal performance has determined the isolating affection and the anti-seismic performance of isolation structure system, thereby develops high performance vibration absorption and isolation support and become the key issue in the seismic isolation technology.
Good shock isolation system should satisfy four basic functions, and (1) is flexibility reasonably; (2) good energy dissipation capacity; (3) initial rigidity, yield force; (4) rapid reset capability.At present, be used to build, the earthquake isolating equipment that subtracts of bridge and other structure mainly contains energy-dissipating devices such as laminated rubber bases, lead core rubber support, high-damping rubber bearing, friction pendulum system and various dampers.All there is weak point in these bearings should be in highrise building, Longspan Bridge and other large-scale structure the time.
There is result of use preferably in the friction pendulum system to the medium and small footpath bridge of striding, but under shake effect doughtily, the horizontal movement amplitude is restricted, and is difficult to guarantee the needs of highrise building, the big displacement of long-span bridge girder construction under severe earthquake action.
The resistance to tension of conventional neoprene bearing (laminated rubber bases, lead core rubber support and high-damping rubber bearing etc.) is poor, the vertical stretch capability of neoprene bearing is much smaller than vertical compressed capability, its boundary stretch capability only is 1/tens of a compressed capability, reaches 1~2N/mm in tensile stress under stretching or the shear strain state merely 2, the tensile stress state may appear in bearing.Present stage is owing to tensile stress appears in strict control rubber earthquake isolation support in the design, or the strict regulations tensile stress the regulation little stress range in, under the rarely occurred earthquake effect, tensile stress should not appear in shock isolating pedestal, when unavoidably being in tension state, its tensile stress should≤1.2MPa.Can satisfy for the average physique shock-insulating building this regulation, but under the acting in conjunction of horizontal earthquake and vertical earthquake, in the isolation structure systems such as highrise building, pyramidal structure and Longspan Bridge isolation structure, be difficult to guarantee that bigger tensile stress appears in bearing, may make the generation tensile failure of bearing, and then the destruction that causes engineering structures.
Summary of the invention
It is poor to the objective of the invention is at existing lead core rubber support resistance to tension, under the acting in conjunction of horizontal earthquake and vertical earthquake, lead core rubber support is prone to the tensile failure problem in highrise building, pyramidal structure and the Longspan Bridge isolation structure, provide a kind of tensile prestress rubber earthquake isolation support, to solve the stretch-proof problem of shock isolating pedestals such as highrise building, pyramidal structure and Longspan Bridge.
Technical scheme of the present invention is as follows:
A kind of tensile prestress rubber earthquake isolation support; by last; under connect steel plate; the inner thin steel plate; inner rubber; the high-purity lead for retractable pencil; prestress wire and ground tackle are formed; it is characterized in that: described inner thin steel plate and inner rubber are superimposed to form overlapping layers; on the overlapping layers; soffit is respectively arranged with; under connect steel plate; the overlapping layers periphery is enclosed with outside rubber cover; the overlapping layers center is provided with a bearing centre bore; be provided with the high-purity lead for retractable pencil in the bearing centre bore; the inner thin steel plate; inner rubber; outside rubber cover and last; under connect steel plate and high-purity lead for retractable pencil through high temperature; high pressure sulfides the formation lead core rubber support; lead core rubber support is provided with prestress wire, and the prestress wire two ends are anchored at respectively; connect down on the ground tackle in the steel plate.
Before bearing bears service load, this bearing is applied compressive stress in advance, thereby form tensile prestress rubber earthquake isolation support.
Described prestress wire can be arranged in the bearing overlapping layers, vertically runs through overlapping layers, constitutes tensile prestress formula lead core rubber support in the bearing body.
Described prestress wire also can be arranged at outside the bearing overlapping layers, and prestress wire directly is anchored on the interior ground tackle of upper and lower connection steel plate, constitutes the outer tensile prestress formula lead core rubber support of bearing body.
Described upper and lower connection steel plate is provided with the connecting bolt hole, is connected with structure.
Beneficial effect: tensile prestress rubber earthquake isolation support of the present invention utilizes neoprene bearing resistance to compression bearing capacity to remedy the resistance to tension deficiency greatly, and under rarely occurred earthquake, bearing remains on pressurized or little tensile stress state, guarantees isolation structure safety.This seat structure is simple, and shock insulation mechanism is clear and definite, is applicable to the shock insulation control of the demanding highrise building of anti-seismic performance, pyramidal structure, Longspan Bridge and other large-scale structure.
Description of drawings
Fig. 1 is the structural representation of tensile prestress shock isolating pedestal (tensile prestress formula in the bearing body);
Fig. 2 is the profile of tensile prestress shock isolating pedestal (tensile prestress formula in the bearing body);
Fig. 3 is the structural representation of tensile prestress shock isolating pedestal (the outer tensile prestress formula of bearing body);
Fig. 4 is the profile of tensile prestress shock isolating pedestal (the outer tensile prestress formula of bearing body).
Description of reference numerals:
1-connecting bolt hole; 2-prestress wire; 3-upper end connects steel plate; 4-lead for retractable pencil; 5-ground tackle; 6-outside rubber layer; 7-inner rubber; 8-inner thin steel plate; 9-lower end connects steel plate.
The specific embodiment
Tensile prestress rubber earthquake isolation support has two kinds to execute mode, and a kind of is tensile prestress formula rubber earthquake isolation support in the bearing body, as depicted in figs. 1 and 2; A kind of is the outer tensile prestress formula rubber earthquake isolation support of bearing body, as shown in Figure 3 and Figure 4.
Embodiment 1
Now this discovery is described further in conjunction with tensile prestress formula rubber earthquake isolation support in the bearing body.
Fig. 1 is a tensile prestress formula rubber earthquake isolation support structural representation in the bearing body, and Fig. 2 is a tensile prestress formula rubber earthquake isolation support profile in the bearing body.This bearing is by last; under connect steel plate 3 and 9; inner rubber 7; inner thin steel plate 8; high-purity lead for retractable pencil 4; prestress wire 2 and ground tackle 5 are formed; inner rubber 7 is superimposed to form overlapping layers with inner thin steel plate 8; on the overlapping layers; soffit is respectively arranged with; under connect steel plate 3 and 9; the overlapping layers periphery is enclosed with outside rubber cover 6; the overlapping layers center is provided with a bearing centre bore; be provided with high-purity lead for retractable pencil 4 in the bearing centre bore; inner rubber 7; inner thin steel plate 8; outside rubber cover 6 is with last; under connect steel plate 3 and 9 and high-purity lead for retractable pencil 4 be through high temperature; high pressure sulfides the formation neoprene bearing; neoprene bearing is provided with prestress wire 2, and prestress wire 2 two ends connect respectively and are anchored at; connect down on the ground tackle 5 in steel plate 3 and 9.Wherein, prestress wire 2 is arranged in the bearing overlapping layers, vertically runs through overlapping layers, constitutes tensile prestress formula neoprene bearing in the bearing body.Before bearing bears service load, this bearing is applied compressive stress in advance, and connect with the upper and lower steel plate 3,9 that is connected by ground tackle 5.
Embodiment 2
Now the invention will be further described in conjunction with the outer formula tensile prestress rubber earthquake isolation support of bearing body.
Fig. 3 is the outer tensile prestress formula rubber earthquake isolation support structural representation of bearing body, and Fig. 4 is the outer tensile prestress formula rubber earthquake isolation support profile of bearing body.This bearing is by last; under connect steel plate 3 and 9; inner rubber 7; inner thin steel plate 8; high-purity lead for retractable pencil 4; prestress wire 2 and ground tackle 5 are formed; inner rubber 7 is superimposed to form overlapping layers with inner thin steel plate 8; on the overlapping layers; soffit is respectively arranged with; under connect steel plate 3 and 9; the overlapping layers periphery is enclosed with outside rubber cover 6; the overlapping layers center is provided with a bearing centre bore; be provided with high-purity lead for retractable pencil 4 in the bearing centre bore; inner rubber 7; inner thin steel plate 8; outside rubber cover 6 is with last; under connect steel plate 3 and 9 and high-purity lead for retractable pencil 4 through high temperature; high pressure sulfides the formation neoprene bearing; neoprene bearing is provided with prestress wire 2, and prestress wire 2 two ends are anchored at respectively; connect down on the ground tackle 5 in steel plate 3 and 9.Wherein, prestress wire 2 is arranged at outside the bearing overlapping layers, and prestress wire 2 directly connects on the ground tackle 5 of upper and lower connection steel plate 3 and 9, constitutes the outer tensile prestress formula neoprene bearing of bearing body.Before bearing bears service load, this bearing is applied compressive stress in advance, and connect with the upper and lower steel plate 3,9 that is connected by ground tackle 5.
Tensile prestress rubber earthquake isolation support of the present invention can utilize neoprene bearing resistance to compression bearing capacity to remedy the resistance to tension deficiency greatly, and under the rarely occurred earthquake, bearing remains on pressurized or little tensile stress state, guarantees isolation structure safety.This seat structure is simple, and shock insulation mechanism is clear and definite, is applicable to the shock insulation control of the demanding highrise building of anti-seismic performance, pyramidal structure, Longspan Bridge and other large-scale structure, has extensive popularizing value.

Claims (5)

1. tensile prestress rubber earthquake isolation support; by last; under connect steel plate (3; 9); inner rubber (7); inner thin steel plate (8); high-purity lead for retractable pencil (4); prestress wire (2) and ground tackle (5) are formed; it is characterized in that: described inner rubber (7) is superimposed to form overlapping layers with inner thin steel plate (8); on the overlapping layers; soffit is respectively arranged with; under connect steel plate (3; 9); the overlapping layers periphery is enclosed with outside rubber cover (6); the overlapping layers center is provided with a bearing centre bore; be provided with high-purity lead for retractable pencil (4) in the bearing centre bore; inner rubber (7); inner thin steel plate (8); outside rubber cover (6) is with last; under connect steel plate (3; 9) and high-purity lead for retractable pencil (4) be through high temperature; high pressure sulfides the formation neoprene bearing; neoprene bearing is provided with prestress wire (2), and prestress wire (2) two ends are anchored at respectively; under connect steel plate (3; 9) on Nei the ground tackle (5).
2. tensile prestress rubber earthquake isolation support according to claim 1 is characterized in that: before bearing bears service load, this bearing is applied compressive stress in advance, thereby form tensile prestress rubber earthquake isolation support.
3. tensile prestress rubber earthquake isolation support according to claim 2, it is characterized in that: described prestress wire (2) is arranged in the bearing overlapping layers, vertically run through overlapping layers, be anchored on the ground tackle (5) in the upper and lower connection steel plate (3,9), constitute tensile prestress formula rubber earthquake isolation support in the bearing body.
4. tensile prestress rubber earthquake isolation support according to claim 2, it is characterized in that: described prestress wire (2) is arranged at outside the bearing overlapping layers, prestress wire (2) directly is anchored on the interior ground tackle (5) of upper and lower connection steel plate (3,9), constitutes the outer tensile prestress formula rubber earthquake isolation support of bearing body.
5. according to claim 3 or 4 described tensile prestress rubber earthquake isolation supports, it is characterized in that: described upper and lower connection steel plate (3,9) is provided with the bolt hole (1) of syndeton and shock isolating pedestal.
CN 201010130595 2010-03-22 2010-03-22 Tensile prestress rubber earthquake isolation support CN101806097A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102839751A (en) * 2012-10-10 2012-12-26 衡水震泰隔震器材有限公司 Three-dimensional shock-isolated bearing and preparation method for same
CN103469896A (en) * 2013-09-27 2013-12-25 无锡圣丰建筑新材料有限公司 Anti-drawing shock-isolating rubber support
CN104153480A (en) * 2014-08-14 2014-11-19 朱幕松 Rolling cutting type all-directional automatic shock isolation device
CN104831621A (en) * 2015-05-13 2015-08-12 北京工业大学 Guide rail type anti-drawing high-damping rubber shock insulation support
CN104947828A (en) * 2015-07-06 2015-09-30 西南科技大学 Lead core recycled tire shock insulation cushion
CN104989001A (en) * 2015-06-24 2015-10-21 上海核工程研究设计院 Anti-pulling shearing locking device
CN105155720A (en) * 2015-10-08 2015-12-16 无锡圣丰建筑新材料有限公司 Adjustable steel cable position limiting shock isolation rubber support seat
CN105803928A (en) * 2016-03-23 2016-07-27 柳州东方工程橡胶制品有限公司 Dual-anti-drawing isolation support
CN106090099A (en) * 2016-08-10 2016-11-09 中国电力科学研究院 Earthquake isolating equipment
CN104153480B (en) * 2014-08-14 2016-11-30 江苏远华轻化装备有限公司 The comprehensive automatic earthquake isolating equipment of rolling shear type
CN106677368A (en) * 2017-03-01 2017-05-17 北京建筑大学 Anti-drawing rubber shock-insulating supporting seat with foamed aluminum core
CN109235683A (en) * 2018-09-07 2019-01-18 昆明理工大学 A kind of tensile device and method of shock-insulation building
CN109339271A (en) * 2018-10-15 2019-02-15 东南大学 Assembled viscoplasticity vibration damping/shake device and its vibration damping/shake method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294240A (en) * 1993-04-08 1994-10-21 Kajima Corp Three-dimensional base isolation device and installation and recovery method thereof
JPH11325177A (en) * 1999-03-15 1999-11-26 Kawaju Kyoryo Maintenance Kk Vibration resistant support device for structure
CN2716377Y (en) * 2004-04-30 2005-08-10 北京工业大学 Shape memory alloy and rubber composite support with horizontal polydirectional vibration-proof and vertical drawing-prevention function
JP2005320376A (en) * 2004-05-06 2005-11-17 Bando Chem Ind Ltd Rubber composition for seismic isolation laminate and seismic isolation laminate using the same
CN1861928A (en) * 2006-06-16 2006-11-15 大连理工大学 Mixed type marmem damper
CN101603381A (en) * 2009-02-20 2009-12-16 山东美晨科技股份有限公司 Architectural vibration-insulation rubber supporting seat

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294240A (en) * 1993-04-08 1994-10-21 Kajima Corp Three-dimensional base isolation device and installation and recovery method thereof
JPH11325177A (en) * 1999-03-15 1999-11-26 Kawaju Kyoryo Maintenance Kk Vibration resistant support device for structure
CN2716377Y (en) * 2004-04-30 2005-08-10 北京工业大学 Shape memory alloy and rubber composite support with horizontal polydirectional vibration-proof and vertical drawing-prevention function
JP2005320376A (en) * 2004-05-06 2005-11-17 Bando Chem Ind Ltd Rubber composition for seismic isolation laminate and seismic isolation laminate using the same
CN1861928A (en) * 2006-06-16 2006-11-15 大连理工大学 Mixed type marmem damper
CN101603381A (en) * 2009-02-20 2009-12-16 山东美晨科技股份有限公司 Architectural vibration-insulation rubber supporting seat

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102839751A (en) * 2012-10-10 2012-12-26 衡水震泰隔震器材有限公司 Three-dimensional shock-isolated bearing and preparation method for same
CN103469896A (en) * 2013-09-27 2013-12-25 无锡圣丰建筑新材料有限公司 Anti-drawing shock-isolating rubber support
CN104153480B (en) * 2014-08-14 2016-11-30 江苏远华轻化装备有限公司 The comprehensive automatic earthquake isolating equipment of rolling shear type
CN104153480A (en) * 2014-08-14 2014-11-19 朱幕松 Rolling cutting type all-directional automatic shock isolation device
CN104831621B (en) * 2015-05-13 2017-02-22 北京工业大学 Guide rail type anti-drawing high-damping rubber shock insulation support
CN104831621A (en) * 2015-05-13 2015-08-12 北京工业大学 Guide rail type anti-drawing high-damping rubber shock insulation support
CN104989001A (en) * 2015-06-24 2015-10-21 上海核工程研究设计院 Anti-pulling shearing locking device
CN104947828A (en) * 2015-07-06 2015-09-30 西南科技大学 Lead core recycled tire shock insulation cushion
CN105155720B (en) * 2015-10-08 2017-10-31 无锡圣丰建筑新材料有限公司 The adjustable spacing shock insulation rubber bearing of cable wire
CN105155720A (en) * 2015-10-08 2015-12-16 无锡圣丰建筑新材料有限公司 Adjustable steel cable position limiting shock isolation rubber support seat
CN105803928A (en) * 2016-03-23 2016-07-27 柳州东方工程橡胶制品有限公司 Dual-anti-drawing isolation support
CN106090099A (en) * 2016-08-10 2016-11-09 中国电力科学研究院 Earthquake isolating equipment
CN106677368A (en) * 2017-03-01 2017-05-17 北京建筑大学 Anti-drawing rubber shock-insulating supporting seat with foamed aluminum core
CN106677368B (en) * 2017-03-01 2019-02-22 北京建筑大学 A kind of anti-pulling foamed aluminum-core rubber earthquake isolation support
CN109235683A (en) * 2018-09-07 2019-01-18 昆明理工大学 A kind of tensile device and method of shock-insulation building
CN109339271A (en) * 2018-10-15 2019-02-15 东南大学 Assembled viscoplasticity vibration damping/shake device and its vibration damping/shake method

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Open date: 20100818