Evaluation of mass-permeability of sand-gravel layers and its application to the prediction of long-term setlement of the reclaimed Pleistocene deposits

• Project/Area Number: 24560603
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Kyoto University
• Principal Investigator: MIMURA Mamoru 京都大学, 工学(系)研究科(研究院), 教授 (00166109)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 弾粘塑性構成モデル / 有限要素法 / 三次元解析 / 相互作用 / 過剰間隙水圧 / 沈下 / 弾粘塑性構成式 / 三次元問題 / マスパーミアビリティ / 更新統粘土 / 埋立 / 弾粘塑性有限要素法 / 擬似過圧密 / 等価透水係数

Outline of Final Research Achievements

A three-dimensional code of the finite element method with the non-stationally flow surface elasto-viscoplastic constitutive model has been developed because the rational numerical solution cannot be derived without considering the three-dimensional effect of the generation and dissipation of excess pore water pressure in the reclaimed Pleistocene clay deposits due to the construction of large-scale reclaimed island in the deep sea condition. The psudo-3D calculated performance with one element in the anteroposterior direction shows a good match with the conventional one with the plain-strain calculated one in terms of the compression of the individual Pleistocene clay layers as well as the excess pore water pressure in the reclaimed deposits. It is demonstrated that the newly developed three-dimensional finite element code can function well to analyze the actual stress-deformation behavior of the large-scale reclaimed Pleistocene deposits.

Research Products

• [Journal Article] Interactive behavior of Pleistocene marine foundation of existing 1st phase island due to construction of 2nd phase island of Kansai International Airport (2013)
  • Author(s): M.Mimura and B.G. Jeon
  • Journal Title: Soils and Foundations Volume: 53-3 Issue: 3 Pages: 375-394
  • DOI: 10.1016/j.sandf.2013.04.001
  • Peer Reviewed
• [Journal Article] Interactive Behavior of Pleistocene Marine Foundation of Existing 1st Phase Island Due to Construction of 2nd Phase Island of Kansai International Airport (2013)
  • Author(s): Mimura, M. and Jeon, B. G.
  • Journal Title: Soils and Foundations Volume: 53-3
  • Peer Reviewed
• [Journal Article] Long-term Deformation of the Reclaimed Pleistocene Foundation of the Offshore Twin Airport (2013)
  • Author(s): Jeon, B. G. and Mimura, M.
  • Journal Title: Proc. 18th ICSMGE Volume: 1
  • Peer Reviewed
• [Journal Article] Long-term Behavior of the Reclaimed Pleistocene Deposits Considering Subsurface Stratigraphy of Kansai International Airport (2012)
  • Author(s): Jeon, B. G. and Mimura, M.
  • Journal Title: Proc. International Symposium on Advances in Ground Technology and Geo-information Volume: 1 Pages: 127-136
  • Peer Reviewed
• [Presentation] 三次元弾粘塑性有限要素解析による多次元集排水挙動に関する基礎的研究 (2015)
  • Author(s): 元宗美郷･矢田啓晃･三村 衛・肥後陽介
  • Organizer: 第50回地盤工学研究発表会
  • Place of Presentation: 北海道学園大学
  • Year and Date: 2015-09-01 – 2015-09-03
• [Presentation] 数値解析による海底地盤の3 次元変形挙動評価手法の開発 (2015)
  • Author(s): 矢田啓晃･三村 衛・肥後陽介･元宗美郷
  • Organizer: 第50回地盤工学研究発表会
  • Place of Presentation: 北海道学園大学
  • Year and Date: 2015-09-01 – 2015-09-03
• [Presentation] 三次元弾粘塑性有限要素解析による粘土地盤の地盤内応力について (2015)
  • Author(s): 元宗美郷･矢田啓晃･三村 衛・肥後陽介
  • Organizer: 平成27年度土木学会関西支部年次学術講演会
  • Place of Presentation: 摂南大学
  • Year and Date: 2015-05-30
• [Presentation] 海上埋立による地盤挙動に対する更新統砂礫層の排水性能を評価手法について (2012)
  • Author(s): 田 炳坤・三村 衛・才津陽平
  • Organizer: 第47回地盤工学研究発表会
  • Place of Presentation: 八戸工業大学
• [Presentation] 更新統砂礫層の排水性能を考慮した合理的な等価透水係数の設定手法について (2012)
  • Author(s): 才津陽平・三村 衛・田 炳坤
  • Organizer: 第47回地盤工学研究発表会
  • Place of Presentation: 八戸工業大学