关键词: 豫西黄土, 土工格室, 挡土墙, 地震作用, 墙体变形, 数值模拟

Abstract: In order to study of the deformation of the reinforced retaining walls in Western Henan loess soils under the seismic loads, this paper uses FLAC3D nonlinear finite difference method for the failure mechanism of a retaining wall reinforced by the geocell and the geogrid. The seismic deformation of the retaining wall improved by the geocell and the geogrid compared with that of the retaining wall without. The influence of length as well as the spacing of the geocell and the geogrid on the deformation are also evaluated. The results show that the lateral displacement at the wall side of geocell retaining wall is slightly smaller than that of the middle wall and the back wall under earthquake action, and the control effect of geocell on lateral displacement is obvious. The lateral displacement of retaining wall can be reduced effectively by increasing the length of reinforcement and decreasing the spacing of reinforcement, and the displacement control at the top of the wall is better than that at other positions.