关于一般建筑物抗震设防标准问题

A ISSUE ABOUT THE SEISMIC PROTECTIONCRITERION OF ORDINARY INDUSTRYAND CIVIL BUILDING

工程场地的设计地震动参数,目前多用概率地震危险性分析的方法给出。场地的地震基本烈度以设计基准期T=50年、加速度超越概率P=0.1的标准确定。本文根据广东省数地地震危险性分析结果结合我国常见的砖混结构的地震动参数的优化决策,认为上述标准宜取为T=50年、P=0.05—0.1。

Recently, the parameter of design seismic ground motion is often given by the probabilistic seismic hazard analysis method, and the exceedance probability 0.1 during a 50 year period is taken as the criterion of basic seismic intensity. Based on the results of hazard analysis in several sites of Guangdong and combined with the optimum decision of maximum ground accerelation for common brick building in China, to take the exceedance probability 0.05-0.1 during a 50 year period as the criterion may be suitable in the paper.