CN103806371A - Seismic mitigation and absorption structure of high-pier bridge and with stay rope supports - Google Patents
Seismic mitigation and absorption structure of high-pier bridge and with stay rope supports Download PDFInfo
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- CN103806371A CN103806371A CN201410060836.0A CN201410060836A CN103806371A CN 103806371 A CN103806371 A CN 103806371A CN 201410060836 A CN201410060836 A CN 201410060836A CN 103806371 A CN103806371 A CN 103806371A
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Abstract
The invention discloses a seismic mitigation and absorption structure of a high-pier bridge and with stay rope supports. The seismic mitigation and absorption structure comprises a bearing platform, a lower pier body, an upper pier body and a beam body, wherein the bearing platform, the lower pier body, the upper pier body and the beam body are stacked sequentially from bottom to top. The seismic mitigation and absorption structure further comprises the stay rope supports, wherein the stay rope supports are arranged on a butt joint surface between the lower pier body and the upper pier body, and the upper pier body is stacked on the lower pier body through the stay rope supports. According to the seismic mitigation and absorption structure of the high-pier bridge and with the stay rope supports, the energy dissipation and seismic mitigation capacity and the limiting capacity of a bridge system can be improved, the adaptability of the high-pier bridge on the basis of the seismic mitigation and absorption technology is improved, the purpose that seismic damage is reduced or avoided is achieved, and the seismic mitigation and absorption structure is applicable to a railway bridge, a highway bridge and an urban viaduct, is especially applicable to high-intensity regions, and has the excellent seismic capacity.
Description
Technical field
The present invention relates to the technical field of bridge structure design, relate in particular to a kind of high pier bridge seismic isolation and reduction structure that drag-line bearing is set.
Background technology
Along with the quick construction of Southwestern China, In Northwest Mountainous highway and railway and the development of urban viaduct, increasing high pier bridge is used widely in these areas, and pier height is also more and more higher.Particularly Mountainous Highway Construction, due to a varied topography, high slope, mountain is steep, a lot of bridges have to cross over river valley and zanjon, these bridges have simply supported girder bridge or 2～7 that many employings do not wait across footpath 20～50m across one continuous girder bridge, or Long Span Continuous Rigid-Frame Structure, its bridge pier height is conventionally up to tens of rice rice even up to a hundred.Along with the quickening of high-grade highway construction, the application of high pier also can get more and more later.The seismic design of high pier bridge is the difficult problem that domestic and international project circle is paid close attention to always, conventionally adopts tensility shock-resistant method as preferred option, and after shake, easily repair subtract shock insulation scheme to the more difficult application of high pier bridge.
Domestic and international shortage high pier stands the experience of high-intensity earthquake at present, and high pier bridge belongs to Irregular Bridges, and its seismic design has exceeded the scope of application of China existing " Seismic Design of Highway Bridges detailed rules and regulations " (JTG/T B02-01-2008).For guaranteeing the safety of lifeline engineering, reduce the economic loss that the rear secondary disaster of shake causes, for avoiding the high pier of high-intensity earthquake that the destruction that cannot repair occurs, bridge worker must pay attention to the seismic design of high pier.
Therefore, the applicant is devoted to develop a kind of high pier bridge seismic isolation and reduction structure that drag-line bearing is set always, reach the damping and the spacing ability that strengthen bridge system, improve high pier bridge employing simultaneously and subtract compliance and the multifarious goal of the invention of seismic isolation technology, thereby alleviate widely the generation of even avoiding earthquake.
Summary of the invention
Because the above-mentioned deficiency of prior art, the present invention proposes a kind of energy-dissipating and shock-absorbing and spacing ability that can strengthen bridge system, improve high pier bridge simultaneously and adopt the compliance that subtracts seismic isolation technology, the high pier bridge seismic isolation and reduction structure that drag-line bearing is set that alleviates or avoid earthquake to produce.
For achieving the above object, the invention provides a kind of high pier bridge seismic isolation and reduction structure that drag-line bearing is set, comprise from down to up stacked successively cushion cap, bottom pier shaft, top pier shaft and beam body.Wherein, the present invention also comprises the drag-line bearing being arranged on described bottom pier shaft and described top pier shaft interface, and described top pier shaft is stacked on the pier shaft of described bottom by described drag-line bearing.
Preferably, described top pier shaft is 1 steel concrete sections piece.
Preferably, described bottom pier shaft is vertically assembled by 2-4 steel concrete sections piece.
Preferably, the 0.3-0.5 that the height of described top pier shaft equals described bottom pier shaft height doubly.
Preferably, the quantity of described drag-line bearing is 2-4.
High tradition pier is divided into top pier shaft and two parts of bottom pier shaft by the present invention, and described drag-line bearing is set on the interface of top pier shaft and bottom pier shaft, the rigidity that described drag-line bearing can effectively improve high pier all directions is set in pier, improve and subtract the utilization ratio of isolation measure, and greatly reduce basic requirement.Realize the function of shock insulation that subtracts of high pier bridge by drag-line bearing, thereby greatly improved the development space of high pier bridge in high earthquake intensity area.In addition, the bridge pier of this structure is realized its predetermined antidetonation target by the power consumption of drag-line bearing, avoid realizing by plastic hinge being set on high pier the antidetonation of high pier bridge, the Pier Design of this form that more valuable is only needs drag-line bearing to keep in repair reset after shake, thereby recovers extremely easily its supporting capacity.
The following beneficial effect that the high pier bridge seismic isolation and reduction structure that drag-line bearing is set of the present invention also has:
1) owing to having adopted the thought of damping device in pier, there is before function of shock insulation occurs all directions bending rigidity compared with the high pier of conventionally design so large, greatly improve high pier bridge employing and subtracted the compliance of seismic isolation technology.
2) there is good economy.The ability designing requirement of the pier footing of the employing of this technology reduces greatly, compared with the high pier of Ductility Design, and convenient maintenance after shake.
3) application seismic isolation and reduction structure has carried out the seismic design of high pier in macroseism situation; preset the damping limiting component of structure; protect main member pier shaft; significantly improve the shock resistance of high pier; embody the conceptual design in seismic design, can be good at the anti-seismic problem of the high pier bridge in mountain area that solves highly seismic region.
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is the elevation that specific embodiment arranges the high pier bridge seismic isolation and reduction structure of drag-line bearing.
Fig. 2 is the side view that specific embodiment arranges the high pier bridge seismic isolation and reduction structure of drag-line bearing.
The specific embodiment
As depicted in figs. 1 and 2, a kind of high pier bridge seismic isolation and reduction structure that drag-line bearing is set of the present embodiment, comprises from down to up stacked successively cushion cap 1, bottom pier shaft 2, top pier shaft 3 and beam body 4.Wherein, the present embodiment also comprises the drag-line bearing 5 being arranged on bottom pier shaft 2 and top pier shaft 3 interfaces, and top pier shaft 3 is stacked on bottom pier shaft 2 by drag-line bearing 5.
Concrete, as shown in the figure, the drag-line bearing 5 of the present embodiment is positioned at the high pier position, middle and upper part of (being made up of bottom pier shaft 2 and top pier shaft 3).Exemplary, the drag-line bearing quantity of the present embodiment is 4, bottom pier shaft 2 is vertically assembled by 3 steel concrete sections pieces, and top pier shaft 3 is 1 steel concrete sections piece, and the height of top pier shaft 3 is set to 0.3-0.5 times of bottom pier shaft 2 height.As mentioned above, the present embodiment arranges described drag-line bearing and can effectively improve the rigidity of high pier all directions in pier, improves and subtracts the utilization ratio of isolation measure, and greatly reduce basic requirement.As shown in the figure, the present embodiment is realized the function of shock insulation that subtracts of high pier bridge by drag-line bearing 5 is set in pier, thereby has greatly improved the development space of high pier bridge in high earthquake intensity area.
The high pier bridge seismic isolation and reduction structure that drag-line bearing is set of the present embodiment is applicable to railway bridge, road bridge, urban viaduct, and especially high earthquake intensity area, possesses outstanding shock resistance.High tradition pier is divided into top pier shaft 3 and 2 two parts of bottom pier shaft by the high pier bridge seismic isolation and reduction structure that the present embodiment arranges drag-line bearing, and by drag-line bearing 5, they are linked up, greatly improve the bending rigidity of high pier all directions, by the slippage of drag-line bearing 5, significantly reduce the impact on bridge pier of inertia force in macroseism situation, improved its safety, drag-line bearing 5 absorbs energy by friction, and can after shake, maintenance easily reset to recover its supporting capacity.
As the one conversion of the present embodiment, bottom pier shaft can adopt the steel concrete sections piece of other quantity such as 1,2,4 or 5 to carry out vertically assembled, and the material of steel concrete sections piece can adopt prestressed reinforced concrete, steel work or steel concrete combined material, also can adopt the new material of other types.
As another conversion of the present embodiment, the parameter (shape of cross section, planar dimension, height etc.) of top pier shaft and bottom pier shaft, parameter, requirement and the position thereof (plane of drag-line bearing and vertical position) of drag-line bearing all can carry out design modifying as required, repeat no more herein.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technician in the art, all should be in by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (5)
1. one kind arranges the high pier bridge seismic isolation and reduction structure of drag-line bearing, comprise from down to up stacked successively cushion cap, bottom pier shaft, top pier shaft and beam body, it is characterized in that: also comprise the drag-line bearing being arranged on described bottom pier shaft and described top pier shaft interface, described top pier shaft is stacked on the pier shaft of described bottom by described drag-line bearing.
2. the high pier bridge seismic isolation and reduction structure that drag-line bearing is set as claimed in claim 1, is characterized in that: described top pier shaft is 1 steel concrete sections piece.
3. the high pier bridge seismic isolation and reduction structure that drag-line bearing is set as claimed in claim 1 or 2, is characterized in that: described bottom pier shaft is vertically assembled by 2-4 steel concrete sections piece.
4. the high pier bridge seismic isolation and reduction structure that drag-line bearing is set as claimed in claim 1, is characterized in that: the height of described top pier shaft equals 0.3-0.5 times of described bottom pier shaft height.
5. the high pier bridge seismic isolation and reduction structure that drag-line bearing is set as claimed in claim 1, is characterized in that: the quantity of described drag-line bearing is 2-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410060836.0A CN103806371A (en) | 2014-02-24 | 2014-02-24 | Seismic mitigation and absorption structure of high-pier bridge and with stay rope supports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410060836.0A CN103806371A (en) | 2014-02-24 | 2014-02-24 | Seismic mitigation and absorption structure of high-pier bridge and with stay rope supports |
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| CN103806371A true CN103806371A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410060836.0A Pending CN103806371A (en) | 2014-02-24 | 2014-02-24 | Seismic mitigation and absorption structure of high-pier bridge and with stay rope supports |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337363A (en) * | 2016-08-29 | 2017-01-18 | 武汉鑫拓力工程技术有限公司 | Novel bridge vibration reduction and noise reduction structure |
| CN106988209A (en) * | 2017-04-06 | 2017-07-28 | 四川交通职业技术学院 | A kind of super-high pier concrete filled steel tube continuous beam Aseismic Structure System beam bridge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10131120A (en) * | 1996-10-31 | 1998-05-19 | Mitsubishi Heavy Ind Ltd | Bridge pier |
| CN201530991U (en) * | 2009-11-09 | 2010-07-21 | 同济大学 | Cable damping bearing |
| CN101831875A (en) * | 2010-06-09 | 2010-09-15 | 中交第一公路勘察设计研究院有限公司 | Precast assembly process of prestressed concrete cylindrical hollow pier |
| CN203700943U (en) * | 2014-02-24 | 2014-07-09 | 上海市城市建设设计研究总院 | High-pier bridge seismic mitigation and absorption structure provided with stay rope supports |
-
2014
- 2014-02-24 CN CN201410060836.0A patent/CN103806371A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10131120A (en) * | 1996-10-31 | 1998-05-19 | Mitsubishi Heavy Ind Ltd | Bridge pier |
| CN201530991U (en) * | 2009-11-09 | 2010-07-21 | 同济大学 | Cable damping bearing |
| CN101831875A (en) * | 2010-06-09 | 2010-09-15 | 中交第一公路勘察设计研究院有限公司 | Precast assembly process of prestressed concrete cylindrical hollow pier |
| CN203700943U (en) * | 2014-02-24 | 2014-07-09 | 上海市城市建设设计研究总院 | High-pier bridge seismic mitigation and absorption structure provided with stay rope supports |
Non-Patent Citations (1)
| Title |
|---|
| 宗周红，夏坚，徐绰然: "桥梁高墩抗震研究现状及展望", 《东南大学学报(自然科学版) 》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337363A (en) * | 2016-08-29 | 2017-01-18 | 武汉鑫拓力工程技术有限公司 | Novel bridge vibration reduction and noise reduction structure |
| CN106988209A (en) * | 2017-04-06 | 2017-07-28 | 四川交通职业技术学院 | A kind of super-high pier concrete filled steel tube continuous beam Aseismic Structure System beam bridge |
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Application publication date: 20140521 |