论历史地震影响烈度分析在工程地震中的作用

ROLE OF RESPONSE INTENSITY ANALYSIS OF HISTORICAL EARTHQUAKES IN ENGINEERIGN SEISMOLOGY

In recent years, there are exciting developments made in the studies of statistic characteristics ofresponse intensity at different sites, mainly as follows:(1)the existence of a logarithmic linear rela-tionship between response intensities at different sites and corresponding frequency has been proved,and this is the most fundamental statistic feature of response intensities at different sites;(2)usingsuch statistic feature, the maximum response intensity at a given site in a certain future period of timecan be anticipated;(3)using the extremal theory for analysing the data of response intensities at dif-ferent sites,the antiseismic defence parameters of probabilistic implication can be obtained for engi-neering projects;(4 )with the analysis and processing methods improved constantly,the data of re-sponse intensities at different sites can be directly used to analyse the site seismic risks. Because thereare fewer indeterministic factors,it has become very promising and widely applied in engineering seis-mology.