掲載雑誌（和）： 日本地震工学シンポジウム講演集 Vol： 6巻 年： 1982年 頁： 25-32頁 著者（和）： - タイトル（和）： - 抄録（和）：
- キーワード（和）： - 掲載雑誌（英）： PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM 著者（英）： Yoshihiro SUGIMURA, Izuru OHKAWA タイトル（英）： SEISMIC MICROZONATION OF TOKYO AREA 抄録（英）：
Seismic forces subjected to the bases of structures during an earthquake depend on no less the local soil conditions of the underlying soil deposits than the properties of the incident earthquake motions at the base layer. In Tokyo, some thousands of bore-hole data have been accumulated and the precise underground conditions thus obtained enable to anticipate the dynamic behavior of soils. In this paper, some seismic microzonation maps of the principal area of Tokyo will be drawn as the results of the response analyses of soil deposits, considering the nonlinear properties of soils, I.e., the strain dependencies of shear modulus and the damping, under the hypothetical earthquake with some certain input level. The process of preparing the microzonation maps are as follws; 1) Collection of the bore-hole data, 2) Subdivision of Tokyo area into meshes on the map, 3) Determination of soil parameters such as the shear modulus, stress-strain relationship, 4) Determination of the base layer, 5) Determination of the input earthquake motion at the base layer, 6) Response computation to obtain the surface motion, which is the input motion to the superstructure, 7) Drawing the zoning maps by use of the surface motion. キーワード（英）： - 記事区分： - 区分 　　　委員会論文集