南水北调中线漕河渡槽流固耦合机理研究

基于考虑槽身与槽内水体流固耦合问题,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,并计算了南水北调中线漕河渡槽结构的地震反应。计算结果表明,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影响显著。计算成果有利于指导施工和运行期安全监测与管理。

Study on the Fluid-solid Interaction Mechanism of Caohe Aqueduct in South-to-North Water Diversion Middle Line Project

Based on considering the fluid-soild coupling prblem in aqueduct,the dynamic FEM model of fluid-solid interaction was established by use of Galerkin Method.And the seismic response of Caohe aqueduct structure in the South-to-North Water Diversion Middle Line Project was calculated.The results indicate that seismic response of the aqueduct structure increases with the rise of water level,and so the fluid-solid interaction was of great influences on the seismic response of the aqueduct structure.The calculated resluts could provide good instruction to aqueduct construction and operational management and safety monitoring.