著者

山田 有孝 永野 正行 山添 正稔 三浦 賢治

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.67, no.561, pp.73-80, 2002-11-30 (Released:2017-02-04)

参考文献数

20

被引用文献数

1 1

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The earthquake strong motion arrived from seismic fault via propagating in bedrock and local site. The adequate 3-dimentional dynamic analytical method is required in order to evaluate the seismic risk for the coming large earthquake. The development of computer technology makes it possible to carry out the dynamic analysis of huge 3-dimentional soil model. The finite element method (FEM) applied to space discrete and explicit method applied to time integration is useful. The FEM can represents soil irregularity more rigorous but expense longer computational time. This paper describes the method of FEM and explicit time integration considering multi volumes with variable mesh size and integral time increment. The proposed method demonstrates good computational performance for dynamic analyses of large 3-dimentional soil model. The prediction analyses for earthquake motions in Osaka area during hypothetical Tokai-Nankai earthquake is shown.