项目名称： 考虑土-结构相互作用效应的核电厂隔震研究

项目编号： No.51478357

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑环境与结构工程学科

项目作者： 周志光

作者单位： 同济大学

项目金额： 85万元

中文摘要： 本项目以采用基底隔震提高核电厂的抗震性能为总体目标，研究考虑土-结构相互作用（SSI）效应时核电厂隔震结构、系统和部件（SSC）的地震响应及控制方法，内容有：比较核电厂隔震结构多质点体系模型与精细三维模型在反应SSC地震响应方面的不同，探索核电厂隔震结构分析模型的建立方法；建立适用于核电厂隔震结构非线性SSI分析的数值方法，研究SSI对核电厂SSC（包括设备和管线系统）地震响应的影响；进行土与核电厂隔震结构相互作用体系振动台模型试验，研究软土、中硬土和刚性地基上核电厂隔震结构的地震反应特性和隔震效果；研究隔震体系的特征参数与SSC地震响应之间的联系，寻求通过调整隔震体系的特征参数来控制SSC地震响应的方法，特别是控制竖向响应的方法。以上研究为核电能源安全提供重要的技术支撑，提升我国在核电厂抗震研究这一领域的自主创新能力，并有助于按照全球最高安全要求新建核电项目这一政策的实施。

中文关键词： 核电厂；基底隔震；土-结构相互作用；结构；系统和部件；楼层反应谱

英文摘要： The goal of the project is to improve the seismic performance of Nuclear Power Plants (NPPs) by using base isolation. The main topic is dynamic response and vibration control of seismically-isolated NPPs under three-component seismic excitation. The contents include: (1) Compare lumped-mass stick model and detailed 3D model in solving seismic response of Structures, Systems, and Components (SSC) in NPP, and give a method of setting models for isolated NPPs. (2) Establish a numerical method for nonlinear Soil-Structure Interaction (SSI) analysis of isolated NPPs, and study the SSI effects on seismic response of SSC （including equipments and piping systems）in isolated NPPs. (3)Shaking table test of an isolated NPP model including dynamic SSI system, study the seismic behavior and isolation effectiveness of the NPP model on soft, moderate hard and rigid soil foundation. (4) Effects of characteristic parameters of isolation systems on dynamic response of SSC in NPP, propose a method to set up isolation systems to reduce the response of SSC, focus on the coupling effects of horizontal and vertical response of structures, and control the vertical response. The above research provides important theory for the safety of nuclear energy, enhances the domestic independent innovation in the field of aseismic nuclear structures, and helps to implement the policy of New NPP projects should be in accordance with the highest safety standards in the world.

英文关键词： Nuclear Power Plant;Base Isolation;Soil-Structure Interaction (SSI);Structures;Systems and Components(SSC);Floor Response Spectra