【摘要】 基于某压水堆电厂设计特点,简要介绍了结构抗震安全性评价中的关键技术问题。为了解结构在硬基岩场地SSE设计基准地震动作用下的地震反应特征和结构抗震安全性,构建核岛厂房结构三维精细化有限元模型;分别基于单一材料等效截面法和分层壳单元法模拟钢板-混凝土组合结构,分别基于Housner简化模型和三维液固耦合模型模拟核岛整体反应及水箱子结构液体晃动效应,分析了标准设计地震动作用下核岛厂房结构的地震反应特征。结果表明,硬基岩条件下,结构内力和变形可以满足设计要求。更多还原

【Abstract】 Based on structural characteristics of a PWR plant,Some issues related to seismic analysis & evaluation on nuclear island building structure are briefly introduced. To reveal the structral dynamic response characteristics and evaluate the aseismic performance of the structures under SSE ground motions,the steel-concrete composite structures are respectively modeled with equivalent section method and multi-layer shell element method,and fluid-structure interation is respectively simulated with Housner method for integrated model and 3D finite element method for tank substructure model. The dynamic response of the structure under safty shutdown earthquake( SSE)ground motion is conducted. It shows that the inner forces and deformation of the strucure conform with the regulations.更多还原