加筋路堤的数值模拟分析

The Numerical Simulation Analysis of Embankment Reinforced by Geogrids

本文采用非线性有限元方法来分析加筋土坡的位移场,建立了3种计算模型,通过有限元分析,对一般土质地基上土工格栅加筋路堤的工作性能进行了研究,不同布筋方式的土工格栅加筋路堤及不加筋路堤进行了计算与分析,研究了各种工况下路堤整体变形情况以及路堤内位移分布、坡面侧移情况。结果表明:加筋能较大幅度地提高路堤的整体刚度和内部稳定性,对地基均匀性和抗变形能力的要求有所提高;加筋路堤边坡的水平位移随着路堤加筋位置的上移而增大。

This paper uses the nonlinear finite element method to analyze the displacement fields of the reinforce slop, creates three calculating models, and through analyzing the finite element, studies the performance of the geotechnical grille with reinforced in embankment, and calculates and analyzes the different bar arrangement for the geotechnical grille with reinforced and compares the one without bar, and studys the whole displacement in every work condition and the displacement and lateral displacement of the slop in the embankment. The results show that： reinforcing in the embankment will greatly improve the whole stiffness and the stability inside of the embankment. Moreover, the equality and the ability of the anti-deformation will improve; horizontal displacement in the embankment will be less with the higher of the bar layers.