双薄壁墩连续刚构桥地震反应谱研究
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摘要
以G75高速公路一座预应力混凝土连续刚构桥为例,利用Midas Civil 2012有限元软件建立有限元空间模型,根据我国现行的《公路工程抗震设计细则》(JTG/T B02-01-2008)规定,对其进行地震反应谱分析。计算结果表明,对于主梁考虑墩水耦合,内力变化明显,变化幅度不大;对于桥墩而言,考虑墩水耦合,桥墩内力和位移变化非常明显,且幅度变化较大,研究结论可供类似工程参考借鉴。
Taking the example of a prestressed concrete bridge with continuous steel structure on G75 expressway,which uses Midas Civil 2012 finite element software to build the model of finite element space,an analysis of its earthquake response pectrum is made according to the China's existing Guidelines for Seismic Design of Highway Bridges( JTG / T B02- 01- 2008). As the result shows,for main girder with consideration of pier-water coupling,the inner stress changes significantly but slightly; while for piers with consideration of pier- water coupling,both changes of inner stress and displacement are significant. This conclusion is a reference for the same projects.
Taking the example of a prestressed concrete bridge with continuous steel structure on G75 expressway,which uses Midas Civil 2012 finite element software to build the model of finite element space,an analysis of its earthquake response pectrum is made according to the China's existing Guidelines for Seismic Design of Highway Bridges( JTG / T B02- 01- 2008). As the result shows,for main girder with consideration of pier-water coupling,the inner stress changes significantly but slightly; while for piers with consideration of pier- water coupling,both changes of inner stress and displacement are significant. This conclusion is a reference for the same projects.
引文
[1]范力础.桥梁抗震[M].上海:同济大学出版社,1996.
[2]JTG D60-2004,公路桥涵设计通用规范[S].
[3]JTG D62-2004,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].
[4]JTG/T F50-2011,公路桥涵施工技术规范[S].
[5]夏志华.大跨度连续刚构桥地震反应分析[D].成都:西南交通大学,2003.
[6]JTG/T B02-01-2008,公路工程抗震设计细则[S].
[7]汪秀根.高墩大跨连续刚构桥地震反应谱分析[J].林业建设,2009(4):57-58.
[8]余玲玲,王解军.高墩大跨连续刚构桥的动力性能及地震反应分析[J].公路工程,2008,33(1):36-38.
[9]代攀.高墩大跨曲线连续刚构桥地震响应分析[D].西安:长安大学,2008.
[2]JTG D60-2004,公路桥涵设计通用规范[S].
[3]JTG D62-2004,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].
[4]JTG/T F50-2011,公路桥涵施工技术规范[S].
[5]夏志华.大跨度连续刚构桥地震反应分析[D].成都:西南交通大学,2003.
[6]JTG/T B02-01-2008,公路工程抗震设计细则[S].
[7]汪秀根.高墩大跨连续刚构桥地震反应谱分析[J].林业建设,2009(4):57-58.
[8]余玲玲,王解军.高墩大跨连续刚构桥的动力性能及地震反应分析[J].公路工程,2008,33(1):36-38.
[9]代攀.高墩大跨曲线连续刚构桥地震响应分析[D].西安:长安大学,2008.
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