The Critical Direction of Seismic Input for Dynamic Analysis of Long Span Cable-Stayed Bridge

Abstract eng:
In dynamic analysis of a complicated structure, the critical direction of seismic input is corresponding to the maximal response of the structure. Based on MIDAS software, the response analysis of a long span cable-stayed bridge under seismic input of different directions had been conducted, the calculating results show that both structure dynamic property and the selected seismic input have effect on the critical direction of seismic input of a structure, and the long period components of ground motion should be considered in the response analysis of long span cable-stayed bridge.

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