基于流固耦合效应的深水大跨刚构桥抗震性能研究

Study on seismic performance of deep water long span rigid frame bridge considering fluid structure coupling effect

为了促进深水桥梁抗震性能的提高,基于流固耦合理论,对考虑结构—水相互作用效应的深水大跨度刚构桥进行了地震动力响应分析,文章研究了水位变化对桥梁地震响应的影响。结果表明,水深对大跨刚构桥的地震响应有较大影响,高烈度区桥梁在进行设计时应考虑水深对桥梁抗震能力的影响。

In order to improve the seismic performance of deep-water bridges,based on the fluid structure coupling theory,the seismic dynamic response of deep-water long-span rigid frame bridge considering the structure water interaction effect is analyzed,and the influence of water level change on the seismic response of the bridge is studied.The results show that the water depth has a great influence on t he seismic response of long-span r igid f rame bridges,a nd t he i nfluence of water depth on t he seismic capacity of bridges i n h igh intensity areas should be considered.