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以南水北调东线睢宁二站工程为例,针对其地基软、地震烈度高、地震时主体结构与相邻控制室、检修间发生接触碰撞的问题,提出在相邻结构间布置对顶钢板的设计方案,采用Constraint-Function算法计算了对顶钢板的接触状态,运用ADINA有限元程序建立了泵站—地基结构的三维有限元模型,分析了正常抽水和横向地震荷载作用下站身结构的应力、位移和接触状态,研究了对顶钢板的抗震效果。结果表明,本文方法解决了睢宁二站软基上抗震的关键问题,可供软基上大型泵站抗震设计参考。
Taking the Second Nanjing-to-North Water Transfer Suining Station as an example, aiming at the problems of soft ground and high seismic intensity, contact and collision between the main structure and adjacent control rooms and overhauls during the earthquake, The design scheme is that the contact state to the top steel plate is calculated by using Constraint-Function algorithm, the finite element model of the pump station-foundation structure is established by ADINA finite element program, and the stress of the standing body structure under normal pumping and lateral seismic loads is analyzed , Displacement and contact status, studied the anti-seismic effect of the top steel plate. The results show that the method of this paper solves the key problems of anti-seismic on soft foundation of Yongning Station, which can be used as a reference for seismic design of large pumping station on soft foundation.