【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 .更多还原

【Abstract】 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.更多还原