不同基岩输入方法对核电厂土与结构相互作用体系水平地震反应谱的影响  

Seismic response spectrum analysis of nuclear soil-structure interaction system considering different bedrock input methods

作　　者：杨笑梅[1] 徐贤雨 郭达文[2,3] 

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006 [2]广东省建筑设计研究院,广东广州510010 [3]广东省建筑设计研究院深圳分院结构研发中心,广东广州510623

出　　处：《地震工程与工程振动》2015年第3期28-36,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51178123);广东省科技计划项目(2013B020200014)

摘　　要：本文依据SASSI用户手册提供的核岛上部结构模型及典型场地建立分析模型,分别选取如下记录作为基岩地震输入:(1)汶川记录中一组有规律随震中距变化的基岩记录;(2)美国RG1.60目标谱相匹配的长滩LBNS记录调整合成的基岩地震记录;(3)我国核抗规HAD101/01目标谱相匹配的H-E08230记录调整合成的基岩地震记录。采用时域显式内域结合人工边界的算法及程序计算地震反应,主要对比我国HAD101/01及美国RG1.60标准获得的核电结构反应谱的差异,进一步与汶川记录反应结果对比,探讨其与我国基岩目标谱获得结果的差异。同时本文还讨论了震中距及土与结构相互作用(SSI)对核岛结构基础反应谱及楼层谱的影响。In this paper, a nuclear model given in SASSI with a typical site condition is analyzed for the strong seismic response spectrum characters. The analysis employs different seismic bedrock S wave input with different Epicenter distances ： （ 1 ） a group of strong seismic nature records of Wenchuan earthquake, （2） artificial synthetic strong seismic records based on RG1.60 target response spectrum, and （3） artificial synthetic strong seismic records based on HAD101/01 target response spectrum. Three dimensional explicit finite element schemes with multi-transmitting boundary condition are employed and the corresponding three-dimensional explicit finite element program 3DSSI is developed in the present analysis. The differences of seismic response spectra caused by RG1.60 and HAD101/01 target response spectrum are compared each other. The results are also compared with the seismic response spectra by Wenchuan earthquake records, and the rationality of HAD101/01 target response spectrum is discussed in this paper. To show the effect of strong earthquakes on nuclear SSI system, the seismic response characters are presented and compared with other two kinds of common models.

关 键 词：土-结构动力相互作用 显式有限元 反应谱 

分 类 号：TL48[核科学技术—核技术及应用] TU43[建筑科学—岩土工程]