地域メッシュ統計を利用した広域での非木造建築物群の震害予測

概要

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As the basis for seismic microzoning on damage of non-wooden buildings, the spatial distribution of the population of non-wooden buildings should be evaluated. In this study, a procedure to estimate the population of non-wooden buildings with different construction age is proposed using the Grid-square Statistics. The vulnerability functions for different construction age are proposed using the damage survey data in Kobe area during the 1995 Hyogo-ken Nanbu, Japan earthquake. The proposed vulnerability functions are applied at five strong-motion stations in Kobe where the main shock records are available. The estimated damage rates agree with the observations. To evaluate seismic risk of non-wooden buildings, the damage ratios are estimated from the peak ground velocity computed for a hypothetical earthquake and the proposed vulnerability functions. Then estimated populations of non-wooden buildings and the damage ratios are integrated to obtain the number of damaged buildings. This procedure is applied in Tokyo and Kanagawa prefectures, and the building damage maps in the area are shown.
社団法人日本建築学会の論文
1999-07-30