渗流作用下新型装配重力式挡土墙有限元分析

Finite element analysis of a new type of assembly gravity retaining wall under the action of seepage

为研究渗流作用下新型装配重力式挡土墙应力变化及墙体排水通道对墙后土体固结的影响,采用ABAQUS进行有限元分析,有限元分析结果与模型试验结果相吻合,证明该模型的合理性。在此基础上研究渗流作用下墙体应力变化趋势及墙体排水通道对墙后土体固结效果的影响。研究结果表明:横向排水通道对墙后土体固结效果的影响优于纵向排水通道对土体固结效果的影响,墙体底部横向排水通道的影响作用最显著;渗流作用下墙体应力由上往下呈先增大后减小的趋势,墙体下部所受最大水平剪应力最大。

In order to study the stress variation of a new assembled gravity retaining wall under seepage and the influence of the wall drainage channel on the consolidation of the soil behind the wall,the finite element analysis is carried out by using ABAQUS,and the finite element analysis results agree with the model test results,the rationality of the model is proved.On this basis,the variation trend of wall stress and the influence of wall drainage channel on the consolidation effect of soil behind the wall are studied.The results show that the effect of horizontal drainage channel is better than that of vertical drainage channel,and the effect of horizontal drainage channel at the bottom of wall is the most significant.Under the action of seepage,the wall stress increases first and then decreases,and the maximum horizontal shear stress on the lower part of the wall is the greatest.