高边坡加固工程有限元稳定性分析

抱龙峪边坡高达110m，且施工场地地质条件较差，工程对边坡的稳定性要求很高，由于传统的极限平衡法在确定边坡的安全系数时存在需要假定滑动面形状、不能分析应力应变关系等一系列的不足，在计算地质条件复杂的高陡边坡时很难得出准确的结果．为了准确了解边坡的内力和变形分布情况，本文运用大型软件ANSYS对该边坡分别进行了预应力锚索加固前后的有限元模拟，并对两者之间的结果进行比较。最后运用有限元强度折减法计算出了加锚前后边坡的安全系数，计算结果表明，设计方案是比较科学合理的．

FEM Analysis of Stability of High Consolidated Slope

The Baolongyu slope is about 110 m in height and poor in geologic condition.In determining the safety coefficient of the slope,the traditional limit balance method has to assume the shape of a failure plane and can not analyze the relation between stress and strain.So it can hardly obtain an accurate result in calculating the high and steep slope with complex geological conditions.In order to know the internal force and deformation status exactly,the FEM simulations are carried out for the slope under both the unanchored condition and anchored condition.The results show that the safety factor of anchored slope calculated by the strength reduction method is scientific and reasonable.