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9-3Šª
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1994”N
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E.157-E.162•Å
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PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
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Jun KANDA, Khaled A. AHMED
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APPLICABILITY OF EXTREME VALUE DISTRIBUTION FOR DIFFERENT SEISMIC STATISTICS
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Estimation of adequate probability distribution for ground motion intensity is essential for reliability-based design and seismic reliability analysis. In this study one of the simplest measures of such intensity, the bedrock velocity V�¡, is employed for the examination of relative appropriateness of extreme value distributions for different spatial conditions. Japanese earthquake catalogs as well as seismotectonic features of the region have been utilized for such purposes focusing mainly on the estimation of probability distributions for annual and 50-year maximum V�¡. The applications of three conventional extreme value distributions and the distribution with upper and lower bounds are compared under different conditions. The latter is found appropriate for estimating the upper bound of maximum V�¡ at a certain site through a proposed expanded seismic zone approach.
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