南水北调中线漕河渡槽结构地震动力特性研究

通过对结构与理想流体耦合问题的分析,采用迦辽金法推导了具有压缩性流体与固体流固耦合问题的动力有限元分析模型,模型考虑了流固耦合问题的附连水质量问题;结合渡槽所在地地震烈度特点,计算了南水北调中线漕河渡槽结构的地震反应。在计算结果分析的基础上,研究表明随着水位的上升,渡槽结构地震反应增大,说明槽身与水体的相互耦合对渡槽结构地震反应是有影响,会引起结构应力、变形的改变。计算成果有利于指导施工和运行期安全监测与管理。

Study on Seismic Dynamic Characteristics of Aqueduct of Caohe in the Middle of South-to-north Water Diversion Project

Analyzed the coupling problems between structure and ideal fluid,a dynamic FEM model for the fluid-solid interaction which considers the mass of adhering water was established by using Galerkin method;considered the earthquake intensity in location of the aqueduct,its seismic response was calculated for the south-to-north water diversion project.The calculated results show that the seismic response of the aqueduct structure increases with the rise of water level,and the fluid-solid interaction influences on...