Investigation of failure mechanism of soil under seepage flow based on micro mechanism

2014 Fiscal Year Final Research Report

• Project/Area Number: 25820219
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Geotechnical engineering
• Research Institution: Independent Administrative Institution Port and Airport Research Institute
• Principal Investigator: TAKANO Daiki 独立行政法人港湾空港技術研究所, その他部局等, その他 (80626218)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 浸透 / PDS-FEM / 粒状体 / マイクロX線CT / 可視化 / 浸食

Outline of Final Research Achievements

Micro characterization such as grain movement or strain localization in sandy soil is investigated using micro X-ray tomography. Moreover, failure of soil under seepage flow is visualized and evaluated in 3D using tomography images.
Finite element (FE) modeling of sand with microcharacterization is discussed in this research. The proposed FE method is implemented with particle discretization whose mesh size and geometry is determined from X-ray CT data. In this study, a series of results of triaxial compression tests on sand are discussed. Laboratory test results are compared with simulation results, and the validation of the proposed model is discussed.

Free Research Field

地盤工学