Proposal of determination method of soil parameters for coral gravel soils -interaction between skeletal structure of coral gravels and silty soil matrix

• Project/Area Number: 23360208
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Independent Administrative Institution Port and Airport Research Institute
• Principal Investigator: WATABE Yoichi 独立行政法人港湾空港技術研究所, その他部局等, 研究領域長 (00371758)
• Co-Investigator(Kenkyū-buntansha): SASSA Shinji 港湾空港技術研究所, 地盤研究領域, 動土質研究チームリーダー (10392979) ; NAKATA Yukio 山口大学, 大学院・理工学研究科, 教授 (90274183) ; YAMADA Fumihiko 熊本大学, 大学院・自然科学研究科, 教授 (60264280) ; MUKUNOKI Toshifumi 熊本大学, 大学院・自然科学研究科, 准教授 (30423651)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000); Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2012: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2011: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
• Keywords: サンゴ礫混じり土 / せん断特性 / 三軸試験 / サンゴ礫含有率 / 間隙比 / 個別要素法 / 粒子破砕 / 地盤定数 / せん断 / サンゴ礫 / 圧密

Research Abstract

Coral gravel soil is a composite soil consisted of silty matrix and finger-coral gravels. In this study, a series of triaxial shear tests for coral gravel soils with different proportion in volumetric percentage of coral gravels were conducted to examine the influence of skeletal structure of coral gravels on the shearing behavior. In addition, another series of triaxial shear tests were conducted for undisturbed coral gravel soil samples with various grain-size distributions to find a governing parameter for the shearing behavior associated with the skeletal structure.

Research Products

• [Journal Article] Sedimentary stratigraphy of intertidal flats with various characteristics (2012)
  • Author(s): Watabe, Y. and Sassa, S
  • Journal Title: Soils and Foundations Volume: Vol.52, No. 3 Issue: 3 Pages: 411-429
  • DOI: 10.1016/j.sandf.2012.05.003
  • Peer Reviewed
• [Presentation] Shearing Property of Coral Gravel Soils (2013)
  • Author(s): Kaneko, T., Watabe, Y. and Yanagisawa, A.
  • Organizer: The 5th KGS -JGS Geotechnical Engineering Workshop
  • Place of Presentation: Seoul
• [Presentation] サンゴ礫混じり土（配合調整試料）のせん断特性 (2013)
  • Author(s): 金子 崇, 渡部要一, 柳沢昭彦, 山田眞一
  • Organizer: 第48回地盤工学研究発表会
  • Place of Presentation: 富山
• [Presentation] サンゴ礫混じり土（高品質サンプリング試料）のせん断特性 (2013)
  • Author(s): 柳沢昭彦, 渡部要一, 金子 崇
  • Organizer: 第48回地盤工学研究発表会
  • Place of Presentation: 富山
• [Presentation] DEM simulation for coral gravels (2013)
  • Author(s): Nakata, Y. and Watabe, Y.
  • Organizer: Workshop on Experimental Micromechanics for Geomaterials (EXP MICRO 2013)
  • Place of Presentation: Hong Kong
• [Presentation] さんご礫の破砕挙動とDEMモデリング (2012)
  • Author(s): 犬飼 惇, 中田幸男, 兵動正幸, 渡部要一
  • Organizer: 第47回地盤工学研究発表会
  • Place of Presentation: 八戸
• [Presentation] Shearing Property of Coral Gravel Soils
  • Author(s): Kaneko, T., Watabe, Y. and Yanagisawa, A
  • Organizer: Proceedings of the 5th KGS -JGS Geotechnical Engineering Workshop
  • Place of Presentation: Seoul
• [Presentation] DEM simulation for coral gravels
  • Author(s): Nakata, Y. and Watabe, Y
  • Organizer: Proceedings of the Workshop on Experimental Micromechanics for Geomaterials (Joint Workshop of the ISSMGE TC101-TC105)
  • Place of Presentation: EXP MICRO
• [Presentation] サンゴ礫混じり土(配合調整試料)のせん断特性
  • Author(s): 金子 崇, 渡部要一, 柳沢昭彦, 山田眞一
  • Organizer: 第48回地盤工学研究発表会講演集
• [Presentation] サンゴ礫混じり土(高品質サンプリング試料)のせん断特性
  • Author(s): 柳沢昭彦, 渡部要一, 金子 崇
  • Organizer: 第48回地盤工学研究発表会講演集
• [Presentation] さんご礫の破砕挙動とDEMモデリング
  • Author(s): 犬飼 惇, 中田幸男, 兵動正幸, 渡部要一
  • Organizer: 第47回地盤工学研究発表会講演集