Research On Seismic Response Of Long-span Concrete Cable-stayed Bridge

There're some specializations of the cable-stayed bridge in its dynamic behavior, because of long span and flexibility of structure than others general engineering structure. In this dissertation, certain problem relating to dynamic property and seismic response behavior of one certain cable-stayed bridge are studied with ANsYs, with 141+345+141m span, double tower and double cable plane. The main contents included:1. Research on asynchronous seismic model, the common asynchronous seismic model is discussed. Based on Hong Hao's two dimension coherence model, asynchronous seismic model is developed by two dimension stochastic vector process.2. Analyzed dynamic property of long span concrete cable-stayed bridge, and the caused by concrete allocation or auxiliary pier in side span is discussed.3. Analysis of long span cable-stayed bridge seismic response by time-history method. Considering asynchronous seismic excitation, the effect by concrete allocation or auxiliary pier in side span is discussed.