1995年兵庫県南部地震における神戸市中央区の地震動評価
スポンサーリンク
概要
- 論文の詳細を見る
We estimate ground motions from the record observed at the JMA Kobe station in the Sannomiya district in Chuo Ward, Kobe, where heavily damaged buildings were concentrated during Hyogo-Ken Nambu earthquake, and use them to examine the damage distribution of buildings. We use a two-dimensional finite element method to model local topography, shallow sub-surface layers, and a deep basin structure formed by the Rokko faults. The resultant ground motion without holocene layers has peak accelerations or velocities well exceeding 800 cm/sec^2 or 100 cm/sec, respectively, in the narrow zone 750m away from the fault. These peak values could be more on the surface since holocene layers would amplify them. Therefore, we carry out nonlinear analyses of holocene layers with five representative sites to estimate surface ground motions after we verified our scheme by comparing the results of the nonlinear analysis with surface records at Fukiai Gas supply station in Chuo Ward. Then, we evaluate maximum ductility response of buildings which are subjected to ground motions with or without holocene layers. Variation of ductility responses with respect to the distance from the fault shows good correspondence with the area of damage concentration. These results suggest that both a deep basin structure and shallow holocene layers have to be taken into account to simulate the strong ground motion and hence to explain damage concentration in Kobe during the Hyogo-ken Nambu earthquake.
- 1996-03-30
論文 | ランダム
- 島薗進・磯前順一 編 『東京帝国大学神道研究室旧蔵書目録および解説』 東京堂出版 一九九六・六刊 B5 五二四頁 二五七五〇円
- Comparative spematology and bryophyte phylogeny (Proceedings of the Symposia on Bryology at the 13 International Botanical Congress, Sydney, Australia,Aug. 21-28, 1981. Part 2 Compiled by Helen P.Ramsay,G.A.M.Scott and Patricia Selkirk) -- (Section 3. Sys
- Comparative Activity of N-Formimidoyl Thienamycin with Third Generation Cephalosporins and Ureido Penicillins against Multiple Resistant Serratia marcescens
- Amoxycillin and ampicillin--A comparative study of in vitro sensitivity and induced morphological alterations in Serratia marcescens
- A New Look at Project Estimation for E-Business (ProMAC2002予稿集) -- (Risk Management(1))