斜拉桥多点激励下的地震反应分析

摘要

讨论了斜拉桥的动力分析问题.首先,介绍了斜拉桥多点激励的理论知识,然后,运用时程分析方法对某斜拉桥进行了一致激励和多点激励情况的计算分析,得到了桥梁的强迫反应中最显著的模记和地震过程中桥梁中预计出现最大力的位置.%The dynamical analysis of a cable-stayed bridge. is discussed First, theoretical aspects of multiple-support excitation applied to cable-stayed bridges are introduced. Then, time-history analyses are performed to obtain the modes which participate most significantly in the bridge's force response and to obtain the locations at which maximum forces can be expected over the duration of an earthquake. All analyses are completed for uniform and multiple-support excitation.