ショートプレゼン2

[P02-17] Multi-stage seepage failure simulation of ground structures
using solid-liquid coupled material point method

*Yuya Yamaguchi¹, Soma Hidano¹, Takase Shinsuke², Shuji Moriguchi¹, Kenji Kaneko², Kenjiro Terada¹ (1. Tohoku University, 2. Hachinohe Institute of Technology)

Keywords:Material point method, Theory of porous media, Unsaturated soil

A multi-stage collapse process of ground structures caused by seepage flow is simulated with a coupled material point method based on the theory of porous media. The continuum of the mixture is discretized with a set of Lagrangian material points that possess the information about both the geometry and material of solid and liquid. Both explicit and implicit schemes are combined to improve the robustness and efficiency in computations. A model experiment for seepage failure is simulated to demonstrate the capability of the proposed method in dealing with the transition from the quasi-static to the dynamic state of the unsaturated soil.