不同因素下软弱夹层边坡的安全性分析

Safety Analysis of Weak Intercalated Slope Under Different Factors Limit Analysis

文中采用极限分析法的上限定理,对软弱夹层边坡进行稳定性极限分析,得出以下结论,对比采用极限分析法与极限平衡法得出的安全系数,二者差值较小,其最大差值仅为0.03。不同加速度放大系数下的安全系数变化趋势具有一致性,在同一时间下,边坡安全系数具有一定的差异,加速度放大系数与边坡安全系数间呈负相关关系。不同水平加速度峰值系数下的安全系数最大差值为2.4,相较于加速度放大系数而言,水平加速度峰值系数对边坡安全系数的影响较大。

The upper limit theorem of the limit analysis method is used in the article to conduct a limit analysis of slope stability for weak interlayers.The following conclusion is drawn:comparing the safety factors obtained by the limit analysis method and the limit equilibrium method,the difference between the two is small,with a maximum difference of only 0.03.The trend of safety factor changes under different acceleration amplification coefficients is consistent.At the same time,the slope safety factor has certain differences,andt here is a negative correlation between the acceleration amplification coefficienta nd the slope safety coefficient.The maximum difference in saefty coefficient under different horizontal acceleration peak coefficients is 2.4.Compared to the acceleration amplification coefficient,the horizontal acceleration peak coefficient has a greater impact on the slope safety coefficient.