钢筋混凝土双柱桥墩抗震能力Pushover分析
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摘要
介绍了Pushover分析方法的基本原理及实施步骤.通过一个算例分析,针对不同侧向力分布模式、不同高度、不同纵向配筋率的双柱桥墩进行Pushover分析.结果表明:对于普通简支梁双柱墩,高度比较低,不同侧向力加载模式对Pushover分析结果影响不大,随着桥墩高度的增加,位移延性系数降低,桥墩延性随着纵向配筋率的提高而降低.
This article deacribes the basic principle and implementation steps of the Pushover analysis method.By a numerical example,RC double-column piers with different lateral force distribution pattern,different heights and different reinforcement ratio were analyzed.The results show that the analysis results for lower piers of simple supported beam bridges are approximately identical under different lateral force distribution,while with the increase of pier height and longitudinal ratio of reinforcement,the displacement ductility factor is reduced.
This article deacribes the basic principle and implementation steps of the Pushover analysis method.By a numerical example,RC double-column piers with different lateral force distribution pattern,different heights and different reinforcement ratio were analyzed.The results show that the analysis results for lower piers of simple supported beam bridges are approximately identical under different lateral force distribution,while with the increase of pier height and longitudinal ratio of reinforcement,the displacement ductility factor is reduced.
引文
[1]FREEMAN S A,NICOLETTI J P,TYRELL J V.Evaluations of existing buildings for seismic risk-A case study of Puget Sound Naval Shipyard,Bremerton,Washington[C].Oakland,California:Proc1st U S National Conference on Earthquake Engineering,1975:113-122.
[2]叶燎原,潘文.结构静力弹塑性分析(PUSHOVER)的原理和计算实例[J].建筑结构学报,2001(1):37-43.
[3]KRAWINKLER H,SENEVIRATNA G.Pros and cons of a pushover analysis of seismic performance evaluation[J].Engi-neering Structures,1998,20(4-6):452-464.
[4]CHOPRA A K,GOEL R K.CaPacity demand diagram methods for estimating seismic deformation of inelastic structures SDF system.PEER-1999/02[R].Berkeley:Pacific Earthquake Engineering Research Center,University of California,1999.
[5]孙景江,TETSURO O,赵衍刚,等.Lateral load pattern in pushover analysis[J].地震工程与工程振动:英文版,2003(1):99-108.
[6]魏巍,冯启民.几种Pushover分析方法对比研究[J].地震工程与工程振动,2002,22(4):66-73.
[7]王理,王亚勇,程绍革.空间结构非线性静力分析的工程应用[J].建筑结构学报,2000,21(1):57-62.
[8]叶献国,钟迅,李康宁,等.Pushover方法与循环往复加载分析的研究[J].合肥工业大学学报:自然科学版,2001,24(6):1019-1024.
[9]冯峻辉,闫贵平,钟铁毅.地震工程中的静力弹塑性(pushover)分析法[J].贵州工业大学学报,2003,23(2):89-102.
[10]Applied Technology Council.Seismic evaluation and retrofit of concrete building ATC-40[R].Oaklamd:Applied Tech-nology Council,1996.
[11]NEHRP.Commentary on the guidelines for the rehabilitation of building FEMA273,FEMA274[S].Washington D C:Federal Emergency Management Agency,1996.
[12]PRIESTLEY M J N.桥梁抗震设计与加固[M].北京:人民交通出版社,1997.
[13]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
[2]叶燎原,潘文.结构静力弹塑性分析(PUSHOVER)的原理和计算实例[J].建筑结构学报,2001(1):37-43.
[3]KRAWINKLER H,SENEVIRATNA G.Pros and cons of a pushover analysis of seismic performance evaluation[J].Engi-neering Structures,1998,20(4-6):452-464.
[4]CHOPRA A K,GOEL R K.CaPacity demand diagram methods for estimating seismic deformation of inelastic structures SDF system.PEER-1999/02[R].Berkeley:Pacific Earthquake Engineering Research Center,University of California,1999.
[5]孙景江,TETSURO O,赵衍刚,等.Lateral load pattern in pushover analysis[J].地震工程与工程振动:英文版,2003(1):99-108.
[6]魏巍,冯启民.几种Pushover分析方法对比研究[J].地震工程与工程振动,2002,22(4):66-73.
[7]王理,王亚勇,程绍革.空间结构非线性静力分析的工程应用[J].建筑结构学报,2000,21(1):57-62.
[8]叶献国,钟迅,李康宁,等.Pushover方法与循环往复加载分析的研究[J].合肥工业大学学报:自然科学版,2001,24(6):1019-1024.
[9]冯峻辉,闫贵平,钟铁毅.地震工程中的静力弹塑性(pushover)分析法[J].贵州工业大学学报,2003,23(2):89-102.
[10]Applied Technology Council.Seismic evaluation and retrofit of concrete building ATC-40[R].Oaklamd:Applied Tech-nology Council,1996.
[11]NEHRP.Commentary on the guidelines for the rehabilitation of building FEMA273,FEMA274[S].Washington D C:Federal Emergency Management Agency,1996.
[12]PRIESTLEY M J N.桥梁抗震设计与加固[M].北京:人民交通出版社,1997.
[13]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
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