软土地基上加筋挡土墙的性状研究

A Research on the Properties of the Reinforced Retaining Walls on the Soft Soil Foundation

通过数值模拟不同的墙厚对软土地基上加筋挡土墙的工作性能的影响,结果表明:挡墙高度一定的情况下,挡墙厚度越小基底沉降量越大。软土地基上加筋挡土墙的墙面位移最大值的点位于墙顶,而不是在0. 7H高处。墙背土压力随着挡墙厚度的增大而增大,总体上分布在静止土压力线和主动土压力线之间。随着挡墙厚度的增大,软土地基的加筋体拉力最大值有两处,分别在墙趾附近和加筋体末端。

On the basis of numerical smulation on the working performance of the reinforced retaining walls on the soft soil foundation influenced by different wall thicknesses,this paper finds that,with a certain wall thickness,the thinner the wall is,the larger the base settlement is. The maximum value of the wall displacement of the reinforced retaining wall on the soft soil foundation lies at the top of the wall,instead of at the a 0. 7 H from the bottom. The back pressure is enhanced with the increase of wall thickness and it is distributed over the area between static and active earth pressure lines. With the increase in the wall thickness,the maximum tension of the reinforcement on the soft soil foundation lie in the wall foot and the end of reinforcement.