【摘要】 以主跨248 m的南京某独塔自锚式悬索桥设计方案为背景,采用MIDAS/Civil 2006有限元程序建立全桥空间模型,利用子空间迭代法计算了该结构的自振周期和振型,并应用反应谱方法计算了该桥地震响应.对同类桥型的动力研究具有参考意义.更多还原

【Abstract】 Based on the single-tower self-anchored suspension bridge with 248m main span in Nanjing,the paper applies Midas/Civil 2006 software to set up a spatial finite element model.The natural periods and modes of the bridge are calculated by using the subspace iteration method,and seismic response characteristic of the bridge is investigated by using response spectrum analysis.This paper can offer references for the dynamic analysis of the same type bridge.更多还原