土工织物加筋法加固软基边坡的效果分析

Analysis of the Consequence of Soft Ground Slope Reinforced by Geotextile-reinforced Method

通过构造软基边坡概化模型,利用有限元软件PLAXIS分析土工织物在不同软基深度下边坡中的加固效果,主要将整体安全系数、竖向位移与水平位移进行对比分析,分析结果表明土工织物加筋法,可明显提高边坡的整体稳定性、减小地基的不均匀沉降和限制侧向变形.当软基厚度较薄时,土工布的铺设可大大提高边坡的整体稳定性,但是位移的减小程度不明显;对于软基厚度较大,加固效果与软基厚度较薄时恰好相反;而且,多层土工织物的铺设对于边坡稳定性的提高并不明显.

In this paper,a generalized model of the typical cross-section was used to study the consequence of soft ground slope with different depth which wsa reinforced by Geotextile-reinforced method vsing PLAXIS software. The comparisons of the overall safety factor,vertical displacement and horizontal displacement were analyzed. The result shows that the geotextile-reinforced method can significantly enhance the overall stability of the slope,and reduce the uneven settlement and lateral deformation. When the soft ground is relatively thin,the laying of geotextile can greatly improve the overall stability of the slope,but the reduction of deformation is not obvious;for the thicker soft ground,the effect is opposite. Moreover,the improvement of overall stability of the slope by laying multi-layer Geotextile is not obvious.