桥梁抗震设计中滑移挡块作用机理
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摘要
基于能量耗散理论及地震动力响应分析,研究了不同地震荷载水平下滑移挡块及桥跨结构承载变化趋势,分析结果说明,滑移挡块在地震荷载下依靠滑移产生摩擦阻力消耗一部分地震力,不会使桥跨结构产生过大刚度而将巨大地震冲击力反馈给下部桥墩及桩基,同时挡块将桥梁破损控制在一定范围内,能量大部分由挡块承担,导致主体结构受损较小,受损严重的挡块在震后也较容易进行快速修复。
Based on energy dissipation theory and seismic dynamic response analysis this paper studied on the variation trends of sliding block and the bridge span structures bearing under the different levels of seismic loading. The results revealed the sliding block relying on silpping generated friction force for consumption part of the seismic load in the earthquake,so the bridge span structures does not make more rigidity to generate huge earthquake force that feedback to the lower part of the piers and pile foundation,while sliding block controlled the bridge damage within a certain range,the block took on largely energy,causing the main structure small damage,more damaged block was carried up quick fix easily after the earthquake.
Based on energy dissipation theory and seismic dynamic response analysis this paper studied on the variation trends of sliding block and the bridge span structures bearing under the different levels of seismic loading. The results revealed the sliding block relying on silpping generated friction force for consumption part of the seismic load in the earthquake,so the bridge span structures does not make more rigidity to generate huge earthquake force that feedback to the lower part of the piers and pile foundation,while sliding block controlled the bridge damage within a certain range,the block took on largely energy,causing the main structure small damage,more damaged block was carried up quick fix easily after the earthquake.
引文
[1]宋胜武.汶川大地震工程震害调查分析与研究[M].北京:科学出版社,2009:740-764.
[2]谢旭.桥梁结构地震响应与抗震设计[M].北京:人民交通出版社,2006:246-248.
[3]韩淼,周锡元.基础隔震软碰撞限位保护分析[J].建筑科学,1999,15(1):54-57.
[4]Zayas V,Low S S,Mahin S A.A simple pendulum technique for achieving seismic isolation[J].Earthquake Spectra,1990,6(2):317-331.
[5]金锡平,张俊发,刘金慧.隔震橡胶防护档块非线性有限元分析[J].工程抗震与加固改造,2005,27(3):51-54.
[6]周明,何清友,郭光普.强震地区桥梁墩台防震挡块病害述评[J].西南公路,2009(01):28-29.
[7]余建星,王新岐.挡块对斜拉桥抗震性能的影响[J].地震工程与工程振动,2002,22(4):114-119.
[8]Tsopelas P,Constantinou M C,Kim Y S,et al.Experimental study of FPS system in bridge seismic in bridge seismic isolation[J].Earthquake Engineering and Structural Dynamics,1996,25(7):65-78.
[9]熊科新.限位挡块在机械加工中的应用[J].风机技术,2000(4):32-33,56.
[10]杨丁芳.用于挡住工件端部的杆式挡块[J].铁道机车车辆工人,1994(5):30.
[11]Wang Y P,Chung L L,Liao W H.Sesmic response analysis of bridges isolate with friction pendulum bearing[J].Earthquake Engineering&Structural Dynamics,1998,27(10):1069-1093.
[12]孙敏.基于能量法的隔震效果的研究[J].中原工学院学报,2007(2):47-50.
[13]陈闪光,张玉珊.梁式桥上部构造防震挡块的预制和安装问题探讨[J].山东交通科技,1999(1):27-29.
[14]金锡平.隔震建、构筑物限位防护装置实验与理论分析[D].西安:西安理工大学,2005.
[15]Hwang J S.Evaluation of equivalent linear analysis methods of bridge isolation[J].Journal of Structure Engineering,1996,122(08):972-976.
[2]谢旭.桥梁结构地震响应与抗震设计[M].北京:人民交通出版社,2006:246-248.
[3]韩淼,周锡元.基础隔震软碰撞限位保护分析[J].建筑科学,1999,15(1):54-57.
[4]Zayas V,Low S S,Mahin S A.A simple pendulum technique for achieving seismic isolation[J].Earthquake Spectra,1990,6(2):317-331.
[5]金锡平,张俊发,刘金慧.隔震橡胶防护档块非线性有限元分析[J].工程抗震与加固改造,2005,27(3):51-54.
[6]周明,何清友,郭光普.强震地区桥梁墩台防震挡块病害述评[J].西南公路,2009(01):28-29.
[7]余建星,王新岐.挡块对斜拉桥抗震性能的影响[J].地震工程与工程振动,2002,22(4):114-119.
[8]Tsopelas P,Constantinou M C,Kim Y S,et al.Experimental study of FPS system in bridge seismic in bridge seismic isolation[J].Earthquake Engineering and Structural Dynamics,1996,25(7):65-78.
[9]熊科新.限位挡块在机械加工中的应用[J].风机技术,2000(4):32-33,56.
[10]杨丁芳.用于挡住工件端部的杆式挡块[J].铁道机车车辆工人,1994(5):30.
[11]Wang Y P,Chung L L,Liao W H.Sesmic response analysis of bridges isolate with friction pendulum bearing[J].Earthquake Engineering&Structural Dynamics,1998,27(10):1069-1093.
[12]孙敏.基于能量法的隔震效果的研究[J].中原工学院学报,2007(2):47-50.
[13]陈闪光,张玉珊.梁式桥上部构造防震挡块的预制和安装问题探讨[J].山东交通科技,1999(1):27-29.
[14]金锡平.隔震建、构筑物限位防护装置实验与理论分析[D].西安:西安理工大学,2005.
[15]Hwang J S.Evaluation of equivalent linear analysis methods of bridge isolation[J].Journal of Structure Engineering,1996,122(08):972-976.
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