摘要
饱和度对土质边坡的稳定性影响很大,为定量分析土体饱和度对边坡稳定性的影响,采用有限元分析软件Ansys对某顺层土质边坡进行分析,计算了不同饱和度下边坡位移场与应力场的变化情况,结果表明:土体饱和度对边坡水平方向位移影响较大,对竖直方向位移影响较小,且饱和度越大,发生水平位移越大;随着土体饱和度的增加,边坡土体内部剪应力逐渐增大;当饱和度小于70%时,边坡稳定安全系数变化不大,饱和度超过70%后,稳定安全系数减小明显。计算结果可为类似顺层土质边坡的稳定性分析提供参考。
Soil saturation has a great influence on the stability. For the quantitative analysis of effect of soil saturation on the slope,a layered soil slope stability analysis was performed to calculate the saturation with different slope of the displacement field and stress field changes. The results showed that the soil saturation on the slope water square to the horizon displacement effect was large,the effect of saturation to vertical displacement was little; with the increase of soil saturation,soil slope internal shear stress increases; when the saturation is lower than 70%,slope stability safety coefficient changes little,when saturation over 70%,stability safety coefficient significantly reduced. The calculation results could provide some support for similar stability of soil slope analysis.
出处
《水科学与工程技术》
2015年第4期50-52,共3页
Water Sciences and Engineering Technology
