墩身系梁对双肢薄壁刚构桥抗震性能影响探讨

摘要

结合某双肢薄壁墩连续刚构桥工程实例,采用有限元计算程序Midas/Civil建模,对结构进行了地震反应谱和时程分析计算,分析比较了不同桥墩系梁数量对全桥抗震性能的影响,给出确定合理设置桥墩系梁的原则和建议。%Combining with the engineering example of some coupled shear thin-wall rigid bridge,the study adopts the finite element calculation program,Midas/Civil to establish models,undertakes the seismic spectrum and time history analysis and calculation of the structure,analyzes the influence of the various amount of the piers with tie beams on the seismic performance of the bridge,and provides some reasonable principles and suggestions for the allocation of the pier with tie beams.