大中小震与抗震设防标准  

LARGE, MIDDLE, SMALL EARTHQUAKES AND SEISMIC FORTIFICATION CRITERION

作　　者：沈建文[1] 石树中[1] 

机构地区：[1]上海市地震局,中国上海200062

出　　处：《地震学报》2004年第5期533-538,共6页Acta Seismologica Sinica

基　　金：上海市科技发展基金 (0 2 2 5 12 0 6 5 );上海市建设技术发展基金 (A0 2 0 6 10 1)联合资助

摘　　要：讨论二级抗震设计与超越概率标准、概率法与综合概率法给出的 3个水平的地震动的关系 .通过危险性分析的实际例子 ,讨论了 5 0年超越概率 2 %、10 %和 6 3%的地震动 ,即“大震”、“中震”和“小震”的相对大小关系 ,并提出抗震设防标准的确定方法 .This paper discusses the relation between two-step seismic design and the standard of probability of exceedance, and the relation of three-levels seismic ground motion parameters given by probability method and comprehensive probability method. The relative size relations of the ground motions with 2%, 10%, 63% probability of exceedance in 50 years, namely 'large earthquake', 'middle earthquake', and 'small earthquake', are discussed through a practical example of seismic hazard analysis. The methods to determine seismic fortification criterion are discussed.

关 键 词：地震安全性评价 抗震设防标准 防震减灾 

分 类 号：P315.9[天文地球—地震学]