International Session (Disaster Prevention and Mitigation)

[CS2-45] FLOW DEFORMATION BEHAVIOR OF CLEAN SAND CAUSED BY WATER INFLOW UNDER CONSTANT SHEAR STRESS

〇Risqi Faris Hidayat¹, Kiyota Takashi¹, Rosiyani Rosiyani¹, Katagiri Toshihiko¹ (1.The University of Tokyo)

Keywords:Static Liquefaction, Triaxial Compression, Flow Slides, Confined Aquifer, Sulawesi Earthquake

This paper describes the shearing behavior of clean sand subjected to volume change due to pore water in/outflow to explain the progressive flow failure mechanism strain-controlled Triaxial Apparatus. From the experimental approach, the static liquefaction with constant shear stress under the drained condition could produce flow behavior even at the low initial static shear stress. On the other hand, at the initiation of the flow failure point, the flow rate of initially denser sand would be faster than that of the looser one.