汶川地震中斜交连续梁桥震害机理研究
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摘要
汶川地震中,斜交桥区别于直桥的典型震害现象为主梁的面内刚体转动。为研究其震害机理,以2跨及3跨预应力混凝土斜交连续梁桥为研究对象,建立数值分析模型,分析碰撞效应和结构偏心效应对主梁转角的影响。分析结果表明,斜交连续梁桥在地震作用下导致梁体面内刚体转动的主要原因是梁体与桥台或桥联间的碰撞效应与结构偏心效应。
In Wenchuan earthquake,a typical phenomenon of earthquake damage of skew bridges different from straight bridges is in-plane rotation of rigid body of girder.In order to study the mechanism of earthquake damage,this paper,with 2-span and 3-span prestressed concrete skew continuous girder bridges as objects of study,establishes numerical analysis model to analyze influences of collision effect and structure eccentric effect on turn angle of girder.The analysis results show that main reasons for in-plane rotation of rigid body of girder of skew continuous girder bridges under the effect of earthquake are collision effect and structure eccentric effect between girder and abutment or bridging.
In Wenchuan earthquake,a typical phenomenon of earthquake damage of skew bridges different from straight bridges is in-plane rotation of rigid body of girder.In order to study the mechanism of earthquake damage,this paper,with 2-span and 3-span prestressed concrete skew continuous girder bridges as objects of study,establishes numerical analysis model to analyze influences of collision effect and structure eccentric effect on turn angle of girder.The analysis results show that main reasons for in-plane rotation of rigid body of girder of skew continuous girder bridges under the effect of earthquake are collision effect and structure eccentric effect between girder and abutment or bridging.
引文
[1]黄金翠.地震作用下斜交桥的旋转特性初步研究[D].重庆:重庆交通大学,2011.
[2]罗婧文.斜交梁桥抗震性能计算分析研究[D].重庆:重庆交通大学,2012.
[3]罗婧文,胡建新,唐光武.斜交桥震害特点与抗震设计初探[J].公路交通技术,2012(2):44-47.
[4]Gakuho WATANABE1,Kazuhiko KAWASHIMA.Effectivenessof Cable-Restrainer for Mitigating Rotation of a SkewedBridge Subjected to Strong Ground Shaking[C]//13thWorld Conference on Earthquake Engineering.Vancouver:[s.n.],2004.
[5]Meng Junyi.Seismic analysis and evalution of skew highwaybridges[D].New York:Syracuse University,2000.
[6]卓秋林.公路简支斜梁桥地震反应分析[D].福州:福州大学,2004.
[7]Elias G Dimitrakopoulos.Seismic Response Analysis of SkewBridges with Pounding Deck-Abutment Joints[J].Engineering Structures,2010(12):813-826.
[8]邓志荣.公路斜交桥的地震反应分析[D].长沙:长沙理工大学,2010.
[9]廖兴.斜交连续梁桥地震反应分析[D].北京:北京交通大学,2011.
[10]Peyman Kavianijopari.Performance-based Seismic Assessmentof Skewed Bridges[D].Irvine:University of CaliforniaIrvine,2011.
[11]AASHTO.Guide Dpecifications for LRFD Seismic BridgeDesign[S].Washingtong,D.C.:AASHTO,2009.
[12]Caltrans.Seismic Design Criteria[S].San Francisco:Caltrans,2011.
[13]重庆交通科研设计院.JTG/TB2-01—2008公路桥梁抗震设计细则[S].北京:人民交通出版社,2008.
[14]同济大学.CJJ166—2011城市桥梁抗震设计规范[S].北京:中国建筑工业出版社,2011.
[15]黄平明.混凝土斜梁桥[M].北京:人民交通出版社,1999.
[2]罗婧文.斜交梁桥抗震性能计算分析研究[D].重庆:重庆交通大学,2012.
[3]罗婧文,胡建新,唐光武.斜交桥震害特点与抗震设计初探[J].公路交通技术,2012(2):44-47.
[4]Gakuho WATANABE1,Kazuhiko KAWASHIMA.Effectivenessof Cable-Restrainer for Mitigating Rotation of a SkewedBridge Subjected to Strong Ground Shaking[C]//13thWorld Conference on Earthquake Engineering.Vancouver:[s.n.],2004.
[5]Meng Junyi.Seismic analysis and evalution of skew highwaybridges[D].New York:Syracuse University,2000.
[6]卓秋林.公路简支斜梁桥地震反应分析[D].福州:福州大学,2004.
[7]Elias G Dimitrakopoulos.Seismic Response Analysis of SkewBridges with Pounding Deck-Abutment Joints[J].Engineering Structures,2010(12):813-826.
[8]邓志荣.公路斜交桥的地震反应分析[D].长沙:长沙理工大学,2010.
[9]廖兴.斜交连续梁桥地震反应分析[D].北京:北京交通大学,2011.
[10]Peyman Kavianijopari.Performance-based Seismic Assessmentof Skewed Bridges[D].Irvine:University of CaliforniaIrvine,2011.
[11]AASHTO.Guide Dpecifications for LRFD Seismic BridgeDesign[S].Washingtong,D.C.:AASHTO,2009.
[12]Caltrans.Seismic Design Criteria[S].San Francisco:Caltrans,2011.
[13]重庆交通科研设计院.JTG/TB2-01—2008公路桥梁抗震设计细则[S].北京:人民交通出版社,2008.
[14]同济大学.CJJ166—2011城市桥梁抗震设计规范[S].北京:中国建筑工业出版社,2011.
[15]黄平明.混凝土斜梁桥[M].北京:人民交通出版社,1999.
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