【摘要】 采用随机振动理论与有限元技术相结合的方法,以基岩随机地震作为输入,对考虑桩-土相互作用的连续刚构桥进行了水平随机地震反应分析;分析行波效应、部分相干效应和局部场地效应对连续刚构桥地震响应的影响;获得了连续刚构桥的墩顶的位移功率谱响应以及各墩墩底的弯矩均方差和功率谱密度曲线。更多还原

【Abstract】 The random seismic response of continuous rigid-ramed bridge are investigated.The analysis method is based on the random vibration theory and finite element method,and the stochastic earthquake motion at bedrock is applied to the primitive input;The spatial varying ground motion effect including the wave passage effect,the ground motion coherence effect and local-spatial variation effect were studied in detail;The response power density of pier and standard deviation of piers are calculated.This study may be a reference for the engineering design.更多还原