某加筋土边坡稳定性系数影响因素的敏感性分析

加筋土边坡的稳定性不仅与地震影响系数和填土的粘聚力、内摩擦角、重度有关,而且与筋条铺设的间距、筋条的长度等因素有关。本文通过对某加筋土边坡工程的稳定性计算,分析了各因素对边坡稳定状态的影响程度,得到地震影响系数的敏感性为-1.47,填土粘聚力的敏感性为0.014,填土内摩擦角的敏感性为0.039,填土重度的敏感性为-0.01,筋条水平间距的敏感性为-0.02,加筋筋条长度的敏感性为0.033。这一研究结果为边坡设计提供了依据,具有一定的实用价值。

Sensitivity Analysis of Parameters Affecting the Stability of a Reinforced Slope

The stability of a reinforced slope is influenced by not only the Earthquake Influence Coefficient, and cohesive strength,friction angle and the gravity of the filled soil,but also the horizontal width and the length of the geogrid.Through calculating the safety factor of a reinforced slope,this article analyzes how much these influential parameters will affect the slope's stability,which can be summarised as follows: the earthquake influence coefficient,—1.47;the cohesive strength of the filled soil,0.014;the friction angle,0.039;gravity,—0.01;the horizontal width of the geogrid,—0.02;the length of the geogrid, 0.033.This study provides theoretical support for the slope design,which is of substantial importance in engineering practice.