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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。
Based on the problem of fluid-solid coupling between the body and the trough, the dynamic finite element analysis model of fluid-structure interaction between compressive fluid and solid was derived by the Galerkin method. The seismic response of the Caohe aqueduct structure in the middle line of South-to-North Water Diversion Project was calculated. The calculation results show that the seismic response of the aqueduct structure increases with the rise of the water level, indicating that the mutual coupling of the aqueduct body and the water body has a significant effect on the seismic response of the aqueduct structure. The calculation results are helpful to guide the safety monitoring and management during construction and operation.