核电厂抗震安全评估方法述评*
裴 强1,王 征1,薛志成2

(1.大连大学 土木工程技术研究与开发中心,辽宁 大连 116622; 2.黑龙江科技大学 建筑工程学院,黑龙江 哈尔滨 150022)

核电厂; 抗震安全评估; 地震易损性法; 保守的确定性失效裕度法; 混合法

Review and Comment of Seismic Safety Evaluation for Nuclear Power Plants
PEI Qiang1,WANG Zheng1,XUE Zhicheng2

(1.The R&D Center of the Civil Engineering Technology,Dalian University,Dalian 116622,Liaoning,China)(2.School of Civil Engineering,Heilong jiang Instituth of Science and Technology,Harbin 150022,Heilongjiang,China)

nuclear power plants; seismic safety evaluation; seismic fragility analysis method; CDFM method; hybrid method

备注

为了应对核电厂超设计基准地震事件以及核电厂延寿和安全运行,需要对核电厂进行超设计基准地震下的抗震安全评估。介绍了3种核电厂抗震能力评估的方法,即保守的确定性失效裕度方法(CDFM)、地震易损性方法(SFA)及CDFM和SFA相结合的混合法。描述了CDFM抗震裕度的定义和保守的确定性失效裕度方法,并解释了用该方法计算抗震裕度的基本步骤; 给出了SFA 3种地震易损性方法和分布模型,并对易损性参数的估计做了简要说明; 最后介绍了混合法的研究概况。研究发现,CDFM法比SFA法简单,在实际应用中较为简便,混合法

In order to deal with the beyond design basis earthquake events,and extend lifespan and safe operation of nuclear power plants,we need to evaluate the seismic safety of nuclear power plants under the beyond design basis earthquake events. We introduce three kinds of seismic safety evaluation methods for nuclear power plants,that is the Conservatism Deterministic Failure Margin(CDFM)method,Seismic Fragility Analysis(SFA)method and the Hybrid method on the basis of CDFM and SFA. In the CDFM method,the concept of the seismic margin and CDFM method is briefly described,and the basic step for calculating the seismic margin by using CDFM method is explained. In the SFA method,the three kinds of the seismic fragility methods and their fragility models are presented and the estimating of the fragility parameters is briefly illustrated. At last,the overview of the hybrid method of CDFM and SFA is introduced. We get the conclusion that the CDFM method which is more convenient in real application is simpler than SFA method. The hybrid method of CDFM and SFA has certain approximation,which is suitable for preliminary analysis.