【摘要】 鉴于目前边坡失稳准则的多样性及其不确定性,如何选择或提出一种既能满足工程需要又能便于应用的失稳判定准则显得尤为重要。首先分析讨论了目前三种较常用的失稳判定准则,然后在位移突变判据的基础上提出了一种改进的失稳判定方法,该方法通过绘制边坡最大水平位移增量与折减系数增量的比值△S/△F跟折减系数Fs的关系曲线来确定边坡安全系数,并通过简化的实例模型证明了其适用性。更多还原

【Abstract】 Due to the existing variety and uncertainty of the unstability criterion for slope analysis,it’s especially important to choose or propose an unstability criterion,which can not only meet with engineering need but also can facilitate its application.Three popular criterions have been analysed and discussed,and then an improved method based on the criterion of displacement saltation has been proposed.The new criterion can obtain its safety factor by plotting the curve of △S/△F — Fs.Its applicability has been proved through simplified engineering samples.更多还原