Accurate liquefaction test of sand without settlement of particles in the specimen

• Project/Area Number: 21560523
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: YOSHIMINE Mitsutoshi 首都大学東京, 都市環境科学研究科, 准教授 (80251338)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 砂 / 液状化 / 透水 / 土質力学 / 地盤工学

Research Abstract

A new triaxial apparatus was developed to measure accurete liquefaction resistance of sand keeping homogeneity of density of the specimen by preventing the settlement of sand particles during the test procedure. The test results from ordinal test with settlement of particles and the new test without settlement by applying upward seepage flow which cancels the gravity were compared. It was found that the difference of the results from these two conditions was small.

Research Products

• [Presentation] 微妙に粒度を変化させた豊浦砂の非排水三軸圧縮試験 (2011)
  • Author(s): 吉嶺充俊・小丸裕介
  • Organizer: 第46回地盤工学研究発表会
  • Place of Presentation: 神戸市
  • Year and Date: 2011-07-07
• [Presentation] 土粒子の沈降による密度不均一が生じない条件での砂の液状化強度試験 (2011)
  • Author(s): 桑原直哉、吉嶺充俊
  • Organizer: 第47回地盤工学研究発表会
• [Presentation] 非常に緩く均質な砂の供試体作成 (2010)
  • Author(s): 小丸裕介・吉嶺充俊・菊池喜昭・水谷崇亮
  • Organizer: 第7回地盤工学会関東支部発表会(Gea-Kanto2010)
  • Place of Presentation: 大宮市
  • Year and Date: 2010-11-05
• [Presentation] Triaxial apparatus for liquefaction tests without settlement of sand particles (2010)
  • Author(s): 桑原直哉、吉嶺充俊
  • Organizer: Proceedings of the 4th Taiwan-Japan Joint Workshop on Geotechnical Hazards from Large Earthquakes and Heavy Rainfalls
  • Place of Presentation: Sendai
  • Year and Date: 2010-10-26
• [Presentation] Triaxial apparatus for liquefaction tests without settlement of sand particles (2010)
  • Author(s): N.Kuwabara, M.Yoshimine
  • Organizer: 4th Taiwan-Japan Joint Workshop on Geotechnical Hazards from Large Earthquakes and Heavy Rainfalls
  • Place of Presentation: 仙台市
  • Year and Date: 2010-10-26
• [Presentation] 不攪乱砂・攪乱砂および粒度幅を狭くした砂の定常状態 (2010)
  • Author(s): 吉嶺充俊・永谷優
  • Organizer: 土木学会第65回年次学術講演会
  • Place of Presentation: 札幌市
  • Year and Date: 2010-09-03
• [Presentation] Determination of the Proper Thickness of Sublayers for Analyzing Post-Liquefaction Deformation Associated with Seepage of Pore Water After Earthquake (2010)
  • Author(s): R.Alchamaa, M.Yoshimine
  • Organizer: Fifth Int.Conferences on Recent Advances in Geotechnical Earthquake Eng.and Soil Dynamics
  • Place of Presentation: San Diego, California, USA
  • Year and Date: 2010-05-25
• [Presentation] マイカ混じり高圧縮性砂の相対密度評価と定常状態 (2009)
  • Author(s): 吉嶺充俊・永野雄志・増田知己・細野康代
  • Organizer: 土木学会第64回年次学術講演会
  • Place of Presentation: 福岡市
  • Year and Date: 2009-09-04
• [Presentation] 豊浦砂の粒度分布 (2009)
  • Author(s): 細野康代・吉嶺充俊
  • Organizer: 土木学会第64回年次学術講演会
  • Place of Presentation: 福岡市
  • Year and Date: 2009-09-04
• [Presentation] 最小密度試験に及ぼす含水比の影響と非常に緩い砂の供試体作成 (2009)
  • Author(s): 吉嶺充俊
  • Organizer: 第44回地盤工学研究発表会
  • Place of Presentation: 横浜市
  • Year and Date: 2009-08-20
• [Presentation] A parametric study on the factors affecting the post-liquefaction flow deformations of ground (2009)
  • Author(s): R.Alchamaa, M.Yoshimine, R.Karasawa, K.Shiomi, Y.Hosono
  • Organizer: International Conference on Performance-basaed Design in Earthquake Geotechnical Engineering
  • Place of Presentation: つくば市
  • Year and Date: 2009-06-17
• [Remarks]
  • URL: http://geot.civil.ues.tmu.ac.jp/index-j.html
• [Remarks]
  • URL: http://geot.civil.ues.tmu.ac.jp/index-j.html
• [Remarks]
  • URL: http://geot.civil.metro-u.ac.jp/index-j.html