Study on the differential settlement of structures due to soil liquefaction

• Project/Area Number: 19560496
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Tokyo Denki University
• Principal Investigator: YASUDA Susumu Tokyo Denki University, 理工学部, 教授 (90192385)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2007: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 液状化 / 沈下 / 家屋 / 砂地盤 / 地震 / 模型実験 / 被災事例分析 / 解析

Research Abstract

地震時に地盤が液状化すると建物やタンクなどが沈下するが、単に沈下するだけでなく不同沈下を生じることもあり、この不同沈下の方が居住性などに影響する。過去の地震時における不同沈下の事例を調べたところ、隣接する建物の距離などが不同沈下量に影響を与えることが分かった。そこで、振動台および解析によって不同沈下に影響を与える要因を研究し、不同沈下量を予測する経験式を導き出した。これを東京のある地区に適用して建物群の不同沈下の被害推定を行った。

Research Products

• [Journal Article] Study on the mechanism of the liquefaction-induced differential settlement of timber houses occurred during the 2000 Tottoriken-seibu earthquake (2008)
  • Author(s): Susumu Yasuda and Yusuke Ariyama
  • Journal Title: 14th World Conf. on Earthquake Engineering (掲載確定)
  • Peer Reviewed
• [Presentation] 四つの家屋不同沈下対策工法に関する振動台実験 (2009)
  • Author(s): 安田進・下枝浩徳
  • Organizer: 土木学会第64回年次学術講演会
  • Place of Presentation: 福岡 (掲載決定)
• [Presentation] A hazard mapping for liquefaction-induced differential settlement of houses (2009)
  • Author(s): Yasuda, S., and Shitaeda, H
  • Organizer: Proc. of International Symposium on Geo-Informatics and Zoning for Hazard Mapping
  • Place of Presentation: 京都 (査読有、掲載決定)
• [Presentation] Study on the mechanism of the liquefaction-induced differential settlement of timber houses occurred during the 2000 Totoriken-seibu earthquake (2008)
  • Author(s): Yasuda, S. and Ariyama, Y
  • Organizer: Proc. of 14th World Conference on Earthquake Engineering, Paper No.S26-021
  • Place of Presentation: Beijing(査読有)
• [Remarks]
  • URL: http://yasuda.g.dendai.ac.jp/