Local deformation characteristics of re-liquefied soil in cyclic simple shear tests using stacked-ring

2014 Fiscal Year Final Research Report

• Project/Area Number: 23760439
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Geotechnical engineering
• Research Institution: The University of Tokyo
• Principal Investigator: MIYASHITA Yukika 東京大学, 生産技術研究所, 技術専門職員 (20396914)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 繰返しリング単純せん断 / 局所大変形 / 砂質土の再液状化 / 画像解析 / 中空ねじりせん断 / 三軸圧縮

Outline of Final Research Achievements

A new system was established by the combination of uniquely developed simple shear test apparatus using stacked-ring and image analysis technique with high resolution. Mechanism of re-liquefaction was investigated by focusing on local deformation characteristics during liquefaction. Change of liquefaction properties during multiple events were evaluated in a systematic way to clarify the conditions in which re-liquefaction tended to take place easily. Difference of liquefaction properties of uniform and segregated sand specimens was also revealed.

Free Research Field

土質・基礎工学