基于广义条件谱的某核电厂安全壳多元地震易损性分析  

Multivariate Seismic Fragility Analysis of a Nuclear Power Plant Containment Based on Generalized Conditional Spectra

作　　者：王晓磊 阎卫东 吕大刚[3] WANG Xiaolei;YAN Weidong;LYU Dagang(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Hebei Key Laboratory of Earthquake Disaster Prevention and Risk Assessment,Sanhe 065201,China;School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]河北省地震灾害防御与风险评价重点实验室,河北三河065201 [3]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《原子能科学技术》2023年第1期175-184,共10页Atomic Energy Science and Technology

基　　金：国家自然科学基金(51908379);辽宁省教育厅基本科研面上项目(LJKMZ20220943);河北省地震灾害防御与风险评价重点实验室开放基金(FZ213206);辽宁省科技厅科研项目(2019JH2/10300054);沈阳市科技局科研项目(1900329)。

摘　　要：本文基于我国场地广义条件谱,对我国某核电厂安全壳进行了多元地震易损性研究。给出了我国场地向量型概率地震危险性分析与分解理论,提出了我国场地广义条件谱生成方法和步骤,生成了我国算例厂址广义条件谱,选取了场地相关地震动记录,基于多元地震易损性分析方法,生成了算例厂址安全壳结构多元地震易损性曲面。分析结果表明:核电厂安全壳地震易损性分析结果对多个地震动强度参数都较为敏感,基于增量动力分析等解析地震易损性方法,能够得到更为精细化易损性分析结果。考虑多个地震动强度参数的地震易损性分析结果,可为更为精细化核电厂地震风险提供研究基础。Seismic hazard analysis and seismic fragility analysis are import parts of seismic risk analysis of the nuclear power plant,and the site-specific spectra generation and selection of ground motion records are the key connecting steps between seismic hazard analysis and seismic fragility analysis.The site-specific spectra based on scalar probabilistic seismic hazard analysis and seismic hazard disaggregation have been widely studied and used.In order to overcome some shortcomings of some site-specific spectra such as uniform hazard spectrum and conditional mean spectrum,the theory of generalized conditional mean spectrum with multiple conditional periods has been proposed.However,the generalized conditional spectra based on the characteristics of Chinese seismicity have not been studied as far as the author knows.Meanwhile,the safety factor method is a common method for seismic fragility analysis of the nuclear power plant.In recent years,the fragility analysis of the nuclear power plant based on analytical fragility data has been applied and studied.At present,the seismic fragility of the nuclear power plant has been usually analyzed based on one single ground motion intensity measure,which contains limited information,and the obtained fragility analysis results are uncertain.The research on multivariate fragility of the nuclear power plant based on analytical seismic fragility analysis methods such as incremental dynamic analysis is still lacking.In this paper,the multivariate seismic fragility analysis of a nuclear power plant containment in China was conducted via the generalized conditional spectrum for the nuclear power plant site in China.Firstly,based on the vector probabilistic seismic hazard analysis and disaggregation theory of the site in China,the generation method and steps of the generalized conditional spectra of the site in China were proposed.For the example site located in China,the generalized conditional spectra of the example site were generated.Based on the generated generalized conditional s

关 键 词：多元地震易损性 核电厂安全壳 广义条件谱 向量型概率地震危险性 增量动力分析 

分 类 号：TL364[核科学技术—核技术及应用]