1995年兵庫県南部地震での神戸市域における強震動と木造建物被害の再評価

概要

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We re-estimated the rupture model of the 1995 Kobe earthquake by using 3-D reciprocal Green's functions and searching for a best fitting case by grid-search technique assuming plural rectangular strong motion generation areas (SMGAs). The final rupture model consists of five SMGAs. The calculated velocity waveforms showed very good fit to the data. For the PGV distribution, regions corresponding to the areas of about 90 to 100 cm/s or greater resulting from the 3-D "edge effect" are in good fit compared to the region of the seismic intensity scale VII of Japan Meteorological Agency. Also the damage ratio of wooden houses in the area is calculated and the observed damage ratio is reproduced fairly well. We can conclude that we showed that the damage in Kobe can be simulated only using physical models. This is a large step toward predicting structural damage using a physical model for an earthquake.
一般社団法人日本建築学会の論文
2009-03-27