【摘要】 以内蒙古沿黄一级公路某座在建桥梁为工程背景,借助通用大型结构分析程序MIDAS/Civil建立该桥动力分析模型,采用动态时程理论对其进行了地震反应分析。在此基础上研究了该桥的动力特性,并探讨了同类桥梁不同桥墩型式在相同地震波组合情况下桥墩墩顶位移、墩底轴力变化规律。结果表明,双肢薄壁空心墩地震响应比双肢薄壁实心墩小,更适合作为大跨度连续刚构桥墩。更多还原

【Abstract】 Taking the under construction bridge along the Yellow River in Inner Mongolia as the engineering background,a dynamic model for it is established by the use of common large-scale structural analysis program Midas/Civil,Using the theory of dynamic time history for earthquake response analysis.Based on it,dynamic characteristic is studied and the change rule of the displacements on the top-pier and axial forces of pier on the same kind of bridge under the different type of piers is explored.The approach and achievement represented in the paper shows double-walled hollow pier seismic response is less than the double-walled solid pier.更多还原