不同地震波作用方向的大型渡槽动力响应分析

以南水北调中线工程中某大型渡槽结构为研究对象,采用ADINA软件中的势流体单元研究考虑流固耦合作用下渡槽结构的动力响应规律。本文对渡槽结构在顺槽向、双向和三向地震波作用下的动力响应分别进行了仿真研究。并分析了附加质量法和ADINA完全流固耦合法在计算流固耦合问题上的异同,及多维地震波对结构动力响应的影响。结果表明:水深及地震作用方向对渡槽结构的动力响应影响较大,且应在双向地震波作用下来研究结构的动力响应问题。

Analysis of dynamic response of large aqueduct under different directions of seismic wave

Taking a large aqueduct in the south-to-north water diversion project as the research object,the paper used the potential fluid element in software ADINA to analyze the dynamic response law of aqueduct structure by considering the fluid-structure coupling interaction.The paper studied the dynamic response of the aqueduct structure under the gateway, two-way and three-way seismic waves respectively. It analyzed the similarities and differences of the two methods such as additional quality standard and scaled complete fluid-structure coupling method of ADINA in the problem of calculating fluid-solid coupling, and the impact of multi-dimensional seismic waves on the dynamic response of structure. Result showed that the water depth and direction of seismic have more influence on the dynamic response of aqueduct structure.It is necessary for us to study the problem of dynamic response under the action of two-way seismic wave.