【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。更多还原

【Abstract】 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.更多还原