The Test Research And Numerical Analysis For The Progressive Rupture Of The Soil Behind The Retaining Wall

The retaining wall is a system that they influence each other between the retaining wall and the soil behind it, so the research content should include the pressure on the retaining wall and the deformation and rupture of the soil .The people used to pay attention to the research on the pressure on the retaining wall, the study on the deformation and the rupture of the soil is very few.In this dissertation, the author studied such a system: a rigid retaining and it is the saturated sand behind it. By model tests and numerical analysis, the author did the research on the pressure of the retaining walk the soil displacement and the pore pressure of the soil behind the rigid retaining wall .For the rigid retaining wall ,the author used the model box which was devised by himself, to study the pressure of the retaining walk the soil displacement and the pore pressure of the soil behind the rigid retaining wall under various wall-movements modes. The types of wall movement includes translation(T), the rotation around the top of the retaining wall(RT) and rotation around the bottom of the wall(RB). The author also used the limiting difference method to study the pore pressure of the soil behind the retaining wall under different wall-movements modes and velocity.. In the study, a constitutive model of "Mohr-Coulomb" was used. Also, an "interface" element is proposed between the soil and the retaining wall.In the finality, the problems requiring further studies are discussed.