CN107747277A - A kind of replaceable units formula high-damping shock isolating pedestal and shock-dampening method - Google Patents
A kind of replaceable units formula high-damping shock isolating pedestal and shock-dampening method Download PDFInfo
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- CN107747277A CN107747277A CN201711047393.1A CN201711047393A CN107747277A CN 107747277 A CN107747277 A CN 107747277A CN 201711047393 A CN201711047393 A CN 201711047393A CN 107747277 A CN107747277 A CN 107747277A
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- damping
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- replaceable units
- bridge
- isolating pedestal
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to technical field of bridge engineering, discloses a kind of replaceable units formula high-damping shock isolating pedestal and shock-dampening method.Wherein, a kind of replaceable units formula high-damping shock isolating pedestal, including support body, some replaceable units formula high-damping devices and lower support plate；Present invention also offers a kind of replaceable units formula high-damping shock isolation method, when by seismic force effects, with support body and lower support plate with respect to slip detrusion occurs for the modular high-damping device, damping energy dissipation is provided by some replaceable units formula high-damping devices, the extending structure vibrations cycle realizes damping and isolation effect；When seismic force stops, bridge can restPose by the elastic restoring force of some replaceable units formula high-damping devices.
Description
Technical field
The present invention relates to technical field of bridge engineering, especially a kind of replaceable units formula high-damping shock isolating pedestal and subtract
Shake method.
Background technology
In recent years, how taking place frequently with global earthquakes, bridge have been realized as Transport Hub and lifeline engineering
The damping of effect, shock insulation are paid much attention to.In isolation bridge field of shock absorption, vibration absorption and isolation support extending structure is used mostly both at home and abroad
Basic cycle or increase are damped to reduce the effect of power, reduce earthquake.The vibration absorption and isolation support used at present mainly has：Frictional damping
Bearing, hydraulic damping bearing, elastic-plastic damping bearing and high-damp rubber support etc.,
Friction pendulum support, such bearing realize damping energy dissipation by the friction of two curved surfaces, are extended using pendulum mechanism
The natural vibration period of structure is to reduce the effect of seismic force.Because frictional damping performance is general, in order to meet Seismic Isolation And Dissipation of Civil Structures requirement,
Larger horizontal displacement and certain vertical displacement amount are generally required, beam body is raised therewith in use produces additional effect in bridge
The power of beam so that beam body has the risk of damage.In addition, in the motion of high speed swinging, if two curved surfaces depart from, there is beam
Risk.
Hydraulic damping bearing, i.e., it is applied in combination by bearing and hydraulic pressure unit formula high-damping device, it is high by hydraulic pressure unit formula
Damping unit provides damping force, and damping capacity is stable, and movement velocity is bigger, is damped caused by hydraulic pressure unit formula high-damping device
Power is bigger, and thus the wall thickness of oil cylinder is bigger, and volume also increases therewith.Space between bridge and bridge pier is very limited, limitation
The performance boost of hydraulic pressure unit formula high-damping device.Further, since the construction that hydraulic pressure unit formula high-damping device is special, it is given birth to
It is expensive to produce manufacturing cost, prevents it from being widely used.
Elastoplasticity bridle iron absorbs big energy in plastic history by mild metal damper and provides damping.But the branch
Seat is universal bulky, has a strong impact on its assembling and transport.And the modular high-damping device after being plastically deformed must the side of replacing
It can be used, but the deflection after being plastically deformed is random, and it can not only provide bridge Self-resetting power, on the contrary can be to rear
The bridge of phase resets reparation and causes obstacle.
High-damp rubber support and lead core rubber support belong to rubber support, i.e. laminated rubber bases, Datong District in structure
Small difference, it is through over cure technological forming after one layer of rubber, one layer of steel plate is overlapped mutually.Both there is significant damping capacity,
But due to the physical property limitation of material in itself, it is only applicable to small across footpath, small tonnage bridge structure.If reluctantly be used for greatly across
Footpath, large heavy girder structure, then economy is poor, security risk also be present, once destroying, consequence is hardly imaginable.And the latter adopts
With heavy metal lead, the pollution that can not be made up can be caused to environment.
Count and find according to Japanese scholars, isolation property of the rubber support under geological process is substantially better than bridle iron, and steel
The vertical rigidity use range of bearing is far longer than rubber support again, thus can bound rubber bearing it is excellent subtract isolation property and
The transmission force property of bridle iron high-bearing capacity researches and develops vibration absorption and isolation support jointly.As Chinese patent literature CN 106351118A are invented
Seismic isolation and reduction structure include some some spherical bearings and rubber support being arranged at intervals between the structure of bridge upper and lower part, when
When earthquake occurs, spherical bearing is cut, and rubber support bears horizontal force so as to realize control bridge beam body horizontal displacement.The knot
The function of structure, which is realized, needs more or larger volume bridge pier, and the setting to bearing requires higher with putting, once bearing occurs
Destroy, then need integral replacing, do not possess the performance quickly repaired after shake.
The content of the invention
In view of this, the main object of the present invention is to provide a kind of replaceable units formula high-damping shock isolating pedestal and damping
Method.
Its technical scheme used is：
A kind of replaceable units formula high-damping shock isolating pedestal, including support body, some replaceable units formula high-dampings
Device and lower support plate；
It is connected at the top of the support body with bridge bottom, its bottom sets some door case type grooves, the doorframe
The bottom of formula groove is contacted by low friction sliding pair with lower support plate and forms a complete loop；It is some replaceable
In modular high-damping device insertion support body bottom door case type groove, its top is connected with door case type groove top, bottom
It is connected with lower support plate；When by seismic force effects, the modular high-damping device is with support body and lower support plate
Detrusion occurs with respect to slip, by some replaceable units formula high-damping devices provide damping energy dissipation, extending structure shake
The dynamic cycle realizes damping and isolation effect；When seismic force stops, bridge can be by the bullet of some replaceable units formula high-damping devices
Property restoring force restPoses.
Further, the lower support plate surrounding sets positive stop, and bottom is connected with bridge pier.
Further, the support body uses one kind in pot bearing and spherical bearing.
Further, vertical force path of the contact surface of the support body and lower support plate as bridge.
Further, the replaceable units formula high-damping device is made of polymer composite.
A kind of replaceable units formula high-damping shock isolating pedestal subtracts shock isolation method, comprises the following steps：
The first step：Replaceable units formula high-damping shock isolating pedestal is laid between the beam bottom of bridge and bridge pier, can be passed through
Replaceable units formula high-damping shock isolating pedestal top, bottom surface and beam bottom, bridge pier are connected using modes such as bolt, welding respectively,
Ensure that it installs firm stabilization；
Second step, support body are constrained by lower support plate limited block, by during seismic force effects in the range of restriction
Slide；With support body and lower support plate with respect to slip detrusion occurs for the modular high-damping device, if by
Dry replaceable units formula high-damping device provides damping energy dissipation, seismic force, and the extending structure vibrations cycle realizes damping and isolation effect；
3rd step, when seismic force stops, bridge restPoses by the elastic restoring force of modular high-damping device.
Beneficial effects of the present invention are：
1. bearing capacity is strong.Replaceable units formula high-damping shock isolating pedestal body uses spherical steel support and benzvalene form branch
Seat, bearing capacity protrude.
2. Path of Force Transfer is clear and definite, Stability Analysis of Structures.The deadweight of bridge superstructure and other external forces pass through support body door
The bottom of frame groove and the contact surface of lower support plate pass to bridge pier.In power transmittance process, the contact surface only exists simply
Opposite linear slides.
3. damping energy dissipation stable performance.Using the shear energy dissipation characteristic of flexible damping block, damping capacity is stable, structure
Thing is hardly damaged in itself, it can be ensured that continuous action in use.
4. damping unit Stability Analysis of Structures, it can adapt to reset automatically.Flexible damping block is different from elastoplasticity steel unit
Formula high-damping device, it will not be because of plastic deformation and irrecoverable.In the range of design objective, modular high-damping device knot
Structure is not in destroy, and can gradually be restPosed by the elasticity of damping block.
5. the damping capacity of damping unit is applied widely.Polymer composite can be adjusted by appropriate material mixture ratio
To realize its different damping capacity, to meet different bridge's design requirements.Existing any rubber support, both
Vertical force is born, adaptation level power is also wanted and high damping properties is provided, but while vertical ability to bear is improved, will necessarily
Reduce the ability of its horizontal force adaptation.In technical solution of the present invention, modular high-damping device only needs to meet adaptation level power i.e.
Can, vertical force is born by support body and lower support plate.
6. compact-sized, good economy performance.Using the modular high-damping device in modular embedded door case type groove, volume
It is small.Physical dimension need not be increased under the conditions of same installing space, it is only necessary to by adjusting material mixture ratio and the quantity property of can be achieved with
Can lifting.Different from hydraulic pressure unit formula high-damping device seat, elastoplasticity bridle iron etc., in order to realize stronger damping capacity,
Structure must be increased, economy protrudes.
7. girder falling.Modular high-damping device is similar to elastic rope, and bridge top is firmly connected with substructure
Together, anti-fall beam action can be played.
It is convenient that 8. installation, dimension are supported and changed.The modular high-damping device of polymer composite uses modular making, easily
Support and change in installation, dimension.If need to change only needs three steps：
The first step, release impairment unit and be vertically connected with；
Second step, extract out and insert new unit；
3rd step, being vertically connected with for new unit is locked, complete to change.
Brief description of the drawings
Fig. 1 is replaceable units formula high-damping shock isolating pedestal,
Fig. 2 is modular high-damping device,
In figure：The upper anchor bolts of 1-, 2- support bodies (by taking spherical bearing as an example), 3- replaceable units formulas high-damping dress
Put, 4- lower support plates, anchor bolt under 5-, 6- low friction sliding pairs, 7- gib blocks, shrouding under 8-, the modular damping blocks of 9-,
10- upper sealing plates.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment, herein illustrative examples of the invention
And explanation is used for explaining the present invention, but it is not as a limitation of the invention.
Referring to figs. 1 to Fig. 2, a kind of replaceable units formula high-damping shock isolating pedestal, from top to bottom including support body 2,
Some replaceable units formula high-damping devices 3 and lower support plate 4, the support body top and bridge bottom anchor bolt
1 connection, its bottom are arranged to door case type groove, and bottom and the lower support plate 4 of the door case type groove pass through low friction sliding pair 6
Contact forms complete loop；The modular high-damping device 3 is embedded in the door case type groove of support body bottom, and it is pushed up
Portion is connected provided with upper sealing plate 10 with door case type groove top, and bottom is connected provided with lower shrouding 8 with lower support plate 4.The undersetting
The surrounding of plate 4 sets positive stop, and both sides are provided with gib block 7, and bottom is connected with bridge pier with lower anchor bolt 5.
In normal state, bridge pad realizes conventional general function by support body 2.When by seismic force effects
When modular high-damping device 3 detrusion occurs with respect to slip with support body 2 and lower support plate 4, provide simultaneously
Damping energy dissipation, reduce seismic force, the extending structure vibrations cycle realizes damping and isolation effect.When seismic force stops, bridge can be by
The elastic restoring force of modular high-damping device 3 restPoses.
Present invention also offers a kind of shock isolation method that subtracts of replaceable units formula high-damping shock isolating pedestal, including following step
Suddenly：
The first step：Replaceable units formula high-damping shock isolating pedestal is laid between the beam bottom of bridge and bridge pier, can be passed through
Replaceable units formula high-damping shock isolating pedestal top, bottom surface and beam bottom, bridge pier are connected using modes such as bolt, welding respectively,
Ensure that it installs firm stabilization；
Second step, support body are constrained by lower support plate limited block, by during seismic force effects in the range of restriction
Slide；With support body and lower support plate with respect to slip detrusion occurs for the modular high-damping device, if by
Dry replaceable units formula high-damping device provides damping energy dissipation, seismic force, and the extending structure vibrations cycle realizes damping and isolation effect；
3rd step, when seismic force stops, bridge restPoses by the elastic restoring force of modular high-damping device.
In the present invention, combined using shear energy dissipation damping unit with support body, utilize support body and lower support plate
Contact surface composition bridge vertical force path, the shear action of range site formula damping block realizes damping and isolation effect, can
Meet all kinds of bearing capacity needs, and can provides enough damping energy dissipations.
In the present invention, damping energy dissipation device is designed in bridge pad bottom and is embedded, reduce shock insulation branch
The size of seat horizontal direction, avoid wasting caused by installation needs to expand bridge pier size.
In the present invention, its damping energy dissipation is realized using modular high-damping device, phase is completed as needed after convenient shake
The single replacement answered, the integral top beam without carrying out bearing are replaced, and the damping block can also provide corresponding self-resetting for bridge
Power, repaired after shake easy.
In the present invention, the damping capacity of modular high-damping device facilitates adjustable, can by the material mixture ratio of damping block,
The volume sum purpose various combination of damping block is realized.
In the present invention, the use of modular high-damping shock isolating pedestal will not cause the change of bridge absolute altitude, ensure
Bridge operation safety.
The technical scheme disclosed in the embodiment of the present invention is described in detail above, specific implementation used herein
Example is set forth to the principle and embodiment of the embodiment of the present invention, and the explanation of above example is only applicable to help and understood
The principle of the embodiment of the present invention；Meanwhile for those of ordinary skill in the art, according to the embodiment of the present invention, it is being embodied
There will be changes in mode and application, in summary, this specification content should not be construed as the limit to the present invention
System.
Claims (6)
- A kind of 1. replaceable units formula high-damping shock isolating pedestal, it is characterised in that including support body, some replaceable unitses Formula high-damping device and lower support plate；It is connected at the top of the support body with bridge bottom, its bottom sets some doorframes Formula groove, the bottom of the door case type groove are contacted by low friction sliding pair with lower support plate and form a complete closing Loop；In some replaceable units formula high-damping device insertion support body bottom door case type grooves, its top and doorframe Formula groove top connect, bottom is connected with lower support plate, when by seismic force effects, the modular high-damping device with With respect to slip detrusion occurs for support body and lower support plate, and resistance is provided by some replaceable units formula high-damping devices Buddhist nun is consumed energy, and the extending structure vibrations cycle realizes damping and isolation effect；When seismic force stops, bridge can be by some replaceable unitses The elastic restoring force of formula high-damping device restPoses.
- 2. replaceable units formula high-damping shock isolating pedestal according to claim 1, it is characterised in that the support body With the vertical force path of the contact surface of lower support plate as bridge.
- 3. replaceable units formula high-damping shock isolating pedestal according to claim 1, it is characterised in that the replaceable list First formula high-damping device is made of polymer composite.
- 4. replaceable units formula high-damping shock isolating pedestal according to claim 1, it is characterised in that the support body Using one kind in pot bearing and spherical bearing.
- 5. replaceable units formula high-damping shock isolating pedestal according to claim 1, it is characterised in that the lower support plate Surrounding sets positive stop, and bottom is connected with bridge pier.
- 6. a kind of replaceable units formula high-damping shock isolating pedestal subtracts shock isolation method, it is characterised in that comprises the following steps：The first step：Replaceable units formula high-damping shock isolating pedestal is laid between the beam bottom of bridge and bridge pier, difference can be passed through Replaceable units formula high-damping shock isolating pedestal top, bottom surface and beam bottom, bridge pier are connected using modes such as bolt, welding, it is ensured that It installs firm stabilization；Second step, support body are constrained by lower support plate limited block, by being slided during seismic force effects in the range of restriction； With support body and lower support plate with respect to slip detrusion occurs for the modular high-damping device, by it is some can be more Change modular high-damping device and damping energy dissipation, seismic force are provided, the extending structure vibrations cycle realizes damping and isolation effect；3rd step, when seismic force stops, bridge restPoses by the elastic restoring force of modular high-damping device.
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| CN201711047393.1A CN107747277B (en) | 2017-10-31 | 2017-10-31 | A kind of replaceable units formula high-damping shock isolating pedestal and shock-dampening method |
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|---|---|---|---|
| CN201711047393.1A CN107747277B (en) | 2017-10-31 | 2017-10-31 | A kind of replaceable units formula high-damping shock isolating pedestal and shock-dampening method |
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| CN107747277A true CN107747277A (en) | 2018-03-02 |
| CN107747277B CN107747277B (en) | 2019-08-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067192A (en) * | 2019-06-03 | 2019-07-30 | 江南大学 | A kind of high-speed rail bridge shock mount and shock-dampening method with high-damping Self-resetting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1037130A (en) * | 1996-07-26 | 1998-02-10 | Yokohama Rubber Co Ltd:The | Rubber-like elastic bearing body construction |
| CN201031361Y (en) * | 2007-05-23 | 2008-03-05 | 衡水中铁建工程橡胶有限责任公司 | High performance basin type support saddle |
| CN202055166U (en) * | 2011-05-06 | 2011-11-30 | 新津腾中筑路机械有限公司 | Vertical elastic tension-compression bearing |
| CN204081077U (en) * | 2014-09-15 | 2015-01-07 | 衡水鑫盛达新材料科技有限公司 | A kind of high-damp rubber support |
| CN106677057A (en) * | 2017-03-01 | 2017-05-17 | 江苏中路工程技术研究院有限公司 | Self-adjusting slope support for large-longitudinal-slope bridge |
-
2017
- 2017-10-31 CN CN201711047393.1A patent/CN107747277B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1037130A (en) * | 1996-07-26 | 1998-02-10 | Yokohama Rubber Co Ltd:The | Rubber-like elastic bearing body construction |
| CN201031361Y (en) * | 2007-05-23 | 2008-03-05 | 衡水中铁建工程橡胶有限责任公司 | High performance basin type support saddle |
| CN202055166U (en) * | 2011-05-06 | 2011-11-30 | 新津腾中筑路机械有限公司 | Vertical elastic tension-compression bearing |
| CN204081077U (en) * | 2014-09-15 | 2015-01-07 | 衡水鑫盛达新材料科技有限公司 | A kind of high-damp rubber support |
| CN106677057A (en) * | 2017-03-01 | 2017-05-17 | 江苏中路工程技术研究院有限公司 | Self-adjusting slope support for large-longitudinal-slope bridge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067192A (en) * | 2019-06-03 | 2019-07-30 | 江南大学 | A kind of high-speed rail bridge shock mount and shock-dampening method with high-damping Self-resetting |
| CN110067192B (en) * | 2019-06-03 | 2020-06-05 | 江南大学 | High-speed rail bridge damping support with high damping self-resetting function and damping method |
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| Publication number | Publication date |
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| CN107747277B (en) | 2019-08-16 |
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Effective date of registration: 20220330 Address after: 710000 room 1401, unit 6, building 40, No. 26, Changqing West Road, Gaoling District, Xi'an City, Shaanxi Province Patentee after: XI'AN ZHONGJIAO SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: 713702 Xi'an, Shaanxi Xixian New District Jinghe new town Yongle Town South cross flow Village Patentee before: Meng Jin |
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Effective date of registration: 20220601 Address after: 311719 plant and Site-2 in Xianfeng Industrial Park, fenkou Town, Chun'an County, Hangzhou City, Zhejiang Province Patentee after: Zhongsheng Road & Bridge Technology Group Co.,Ltd. Address before: 710000 room 1401, unit 6, building 40, No. 26, Changqing West Road, Gaoling District, Xi'an City, Shaanxi Province Patentee before: XI'AN ZHONGJIAO SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
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Denomination of invention: A replaceable unit type high damping isolation support and damping method Effective date of registration: 20230919 Granted publication date: 20190816 Pledgee: Zhejiang Chun'an Rural Commercial Bank Co.,Ltd. Fenkou Branch Pledgor: Zhongsheng Road & Bridge Technology Group Co.,Ltd. Registration number: Y2023980057081 |