Enhancement of seismic design of foundations including liquefaction-induced damage evaluation, remediation and restoration of wooden houses

• Project/Area Number: 25289181
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Tokimatsu Kohji 東京工業大学, 環境・社会理工学院, 教授 (50134846)
• Co-Investigator(Kenkyū-buntansha): 田村 修次 東京工業大学, 理工学研究科, 准教授 (40313837) ; 鈴木 比呂子 千葉工業大学, 工学部, 准教授 (60401527)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000); Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2015: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
• Keywords: 液状化 / 戸建て住宅 / 対策 / 修復 / 傾斜 / 沈下 / 予測

Outline of Final Research Achievements

Our study on evaluation, remediation and restoration of liquefaction-induced damage to wooden houses suggests the following: (1) Damage to shallow foundations increased with increasing number of stories, contact pressure, and aspect ratio as well as ground settlement, and with decreasing thickness of non-liquefied crust; (2) Settlements of frictional pile foundations were classified into three according to their relative position to the ground, depending on the building and ground conditions, while the rotational constraint at pile head and the ductility and capacity of pile would have differentiated damaged from undamaged structures; (4) the installation of drainpipe around a wooden house was effective in reducing tilt angle of the house; and (5) The extent of damage to shallow foundation may be estimated with the factors of safety against vertical force and overturning moment both acting on the non-liquefied crust supporting the building.

Research Products

• [Journal Article] Lateral Spreading Near Deep Foundations and Influence of Soil Permeability (2017)
  • Author(s): He, L., Ramirez, J.M., Lu, J., Tang l., Elgamal, A., Tokimatsu, K.
  • Journal Title: Canadian Geotechnical Journal Volume: 印刷中 Issue: 6 Pages: 846-861
  • DOI: 10.1139/cgj-2016-0162
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] PEER-NGL project: Open source global database and model development for the next-generation of liquefaction assessment procedures (2016)
  • Author(s): Stewart, JP, SL Kramer, DY Kwak, MW Greenfield, RE Kayen, K Tokimatsu, JD Bray, CZ Beyzaei, M Cubrinovski, T Sekiguchi, S Nakai, Y Bozorgnia
  • Journal Title: Soil Dynamics and Earthquake Engineering Volume: 91 Pages: 317-328
  • DOI: 10.1016/j.soildyn.2016.07.009
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] PEER-NGL Project, Open Source Global Database and Model Development for the Next-Generation of Liquefaction Assessment Procedures (2016)
  • Author(s): J. P. Stewart, S. L. Kramer, D. Y. Kwak, M. W. Greenfield, R. E. Kayen, K. Tokimatsu, J. D. Bray, C. Z. Beyzaei, M. Cubrinovski, T. Sekiguchi, S. Nakai, and Y. Bozorgnia
  • Journal Title: UCLA Previously Published Works & Proceedings of six International Conference on Earthquake Geotechnical Engineering (6ICEGE) Volume: - Pages: 3277-3299
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dynamic Centrifuge Tests to Evaluate Reinforcing Mechanisms of Soil-Cement Columns in Liquefiable Sand. (2015)
  • Author(s): Rayamajhi, D., Tamura, S., Khosravi, M., Boulanger, R., Wilson, D., Ashford, S., and Olgun, C.
  • Journal Title: Journal of Geotechnical and Geoenvironmental Engineering, ASCE Volume: 04015015 Issue: 6 Pages: 1-12
  • DOI: 10.1061/(asce)gt.1943-5606.0001298
  • Peer Reviewed
• [Journal Article] 2011年東北地方太平洋沖地震による浦安市運動公園での杭基礎被害とその要因分析 (2013)
  • Author(s): 時松孝次,坪井友宏,鈴木比呂子,阿部秋男
  • Journal Title: 日本建築学会構造系論文集 Volume: 78, 693 Pages: 1887-1894
  • NAID: 200000384304
  • Peer Reviewed
• [Presentation] PERFORMANCE OF THREE DIFFERENT PILE FOUNDATIONS IN URAYASU CITY DURING 2011 TOHOKU EARTHQUAKE (2017)
  • Author(s): Tokimatsu, K., Suzuki, H., and Abe, A.
  • Organizer: 16th World Conference on Earthquake, Santiago Chile
  • Place of Presentation: Santiago, Chile
  • Year and Date: 2017-01-09
  • Int'l Joint Research
• [Presentation] 液状化地盤における摩擦杭基礎建物の沈下被害と地盤条件の関係 -その2 遠心模型実験- (2016)
  • Author(s): 山中龍,奥村豪悠,本多剛,時松孝次
  • Organizer: 第51回地盤工学研究発表会発表集
  • Place of Presentation: 岡山大学
  • Year and Date: 2016-09-13
• [Presentation] 液状化による直接基礎建物の沈下とその評価 (2016)
  • Author(s): 日野和也,時松孝次,鈴木康嗣
  • Organizer: 2016年度日本建築学会大会学術講演梗概集
  • Place of Presentation: 福岡大学
  • Year and Date: 2016-08-24
• [Presentation] 過剰間隙水圧の時刻歴から求めた液状化地盤の体積ひずみと沈下量 (2016)
  • Author(s): 山本昌徳,時松孝次,日野和也
  • Organizer: 2016年度日本建築学会大会学術講演梗概集
  • Place of Presentation: 福岡大学
  • Year and Date: 2016-08-24
• [Presentation] Liquefaction Mitigation for Existing Houses using Dewatering (2015)
  • Author(s): Kazuya Hino, Kohji Tokimatsu, Yasutsugu Suzuki, and Hiroko Suzuki
  • Organizer: 6th International Conference on Earthquake Geotechnical Engineering
  • Place of Presentation: Christchurch, New Zealand
  • Year and Date: 2015-11-01 – 2015-11-04
• [Presentation] Effect of Groundwater Depth on Differential Settlement of Wooden Houses during Soil Liquefaction (2015)
  • Author(s): Kazuya Hino, Kohji Tokimatsu, Yasutsugu Suzuki, Hiroko Suzuki
  • Organizer: Proceedings of six International Conference on Earthquake Geotechnical Engineering (6ICEGE)
  • Place of Presentation: Christchurch, New Zealand
  • Year and Date: 2015-11-01
  • Int'l Joint Research
• [Presentation] Bearing Capacity and Pull-Out Resistance of Wing Piles During Cyclic Vertical Loading (2015)
  • Author(s): K. Urabe, K. Tokimatsu, H. Suzuki and Y. Asaka
  • Organizer: Proceedings of six International Conference on Earthquake Geotechnical Engineering (6ICEGE)
  • Place of Presentation: Christchurch, New Zealand
  • Year and Date: 2015-11-01
  • Int'l Joint Research
• [Presentation] 液状化地盤に建つ戸建住宅の沈下・傾斜に及ぼす地下水位の影響に関する有効応力解析 (2015)
  • Author(s): 秀川 貴彦、安達 直人、鈴木 康嗣、時松 孝次
  • Organizer: 2015年度日本建築学会大会（関東）
  • Place of Presentation: 東海大学（神奈川県・平塚市）
  • Year and Date: 2015-09-05 – 2015-09-06
• [Presentation] 液状化地盤に建つ直接基礎建物の不同沈下に関する研究 (2015)
  • Author(s): 日野和也,時松孝次,田村修次
  • Organizer: 2015年度日本建築学会大会（関東）
  • Place of Presentation: 東海大学（神奈川県・平塚市）
  • Year and Date: 2015-09-04 – 2015-09-06
• [Presentation] 排水工法におけるドレーン影響範囲の遠心実験に基づく検討 (2015)
  • Author(s): 鈴木比呂子、時松孝次
  • Organizer: 2015年度日本建築学会大会（関東）
  • Place of Presentation: 東海大学（神奈川県・平塚市）
  • Year and Date: 2015-09-04 – 2015-09-06
• [Presentation] 基礎の連結による既存戸建て住宅の液状化対策 (2015)
  • Author(s): 田村修次、日野和也、時松孝次
  • Organizer: 2015年度日本建築学会大会（関東）
  • Place of Presentation: 東海大学（神奈川県・平塚市）
  • Year and Date: 2015-09-04 – 2015-09-06
• [Presentation] 既存戸建て住宅に対する 排水工法と地下水位低下工法の液状化対策に関する検討 (2014)
  • Author(s): 日野和也,時松孝次,鈴木康嗣,鈴木比呂子
  • Organizer: 第14 回日本地震工学シンポジウム
  • Place of Presentation: 幕張メッセ(千葉県・千葉市美浜区)
  • Year and Date: 2014-12-04 – 2014-12-06
• [Presentation] 液状化による戸建住宅の不同沈下とその対策としての排水工法の評価 (2014)
  • Author(s): 日野和也,時松孝次,鈴木康嗣,鈴木比呂子
  • Organizer: 第49 回地盤工学研究発表会
  • Place of Presentation: 北九州市国際会議場
• [Presentation] 排水機能付き杭を用いた木造住宅の液状化対策に関する検討 (2014)
  • Author(s): 日野和也,時松孝次,田村修次
  • Organizer: 2014年度日本建築学会大会
  • Place of Presentation: 神戸大学
• [Presentation] 鉛直交番荷重を受ける羽根付杭の支持力特性に地盤条件が及ぼす影響 (2014)
  • Author(s): 卜部光平,鈴木比呂子,浅香美治,時松孝次
  • Organizer: 2014年度日本建築学会大会
  • Place of Presentation: 神戸大学
• [Presentation] 地下水位低下工法および排水工法を併用した既存戸建住宅の液状化対策に関する実験的検討 (2013)
  • Author(s): 時松孝次, 遠山和嗣,鈴木比呂子, 鈴木康嗣
  • Organizer: 2013年度日本建築学会大会
  • Place of Presentation: 北海道大学
• [Presentation] 2011 年東北地方太平洋沖地震により生じた小学校校舎の杭基礎被害とその要因分析 (2013)
  • Author(s): 坪井友宏, 時松孝次, 桒子喬
  • Organizer: 2013年度日本建築学会大会
  • Place of Presentation: 北海道大学
• [Book] Liquefaction-Induced Ground Movement Effects (2017)
  • Author(s): Jonathan D. Bray, Ross W. Boulanger, Misko Cubrinovski, Kohji Tokimatsu, Steven L. Kramer, Thomas O’Rourke, Ellen Rathje, Russell A. Green, Peter K. Robertson, Christine Z. Beyzaei
  • Total Pages: 278
  • Publisher: Pacific Earthquake Engineering Research Center
• [Book] Q&Aで知る 住まいの液状化対策 (2015)
  • Author(s): 時松孝次
  • Total Pages: 108
  • Publisher: 創樹社
• [Book] Natural Disaster Science and Mitigation Engineering,DPRI Report.Vol.1:Studies on the 2011 Off the Pacific Coast of Tohoku Earthquake, Chapter 10, Soil liquefaction along the coast of Tokyo Bay induced by the 2011 Off the Pacific Coast of Tohoku Earthquake (2013)
  • Author(s): Tamura, S. （分担）
  • Total Pages: 196
  • Publisher: Springer
• [Remarks] 科学研究費関係：戸建て住宅の液状化被害予測・対策・修復を含む建物基礎の耐震技術の向上
  • URL: http://www.archtitech.ac.jp/tokimatsu/research/t2013.htm