岩土力学2011，Vol.32Issue(8)：2453-2458,6.
边坡稳定分析三维极限平衡条柱间力的讨论
Discussion on force between columns of three-dimensional limit equilibrium for slope stability analysis
摘要
Abstract
Based on the movement law of the potential sliding body sliding in the inclined plane by dead weight effect, the assumption that the direction of the anti-sliding force is perpendicular to the intersecting line of the sliding surface and the horizontal plane are proposed. Citing a concept of played factor of inter-slice shear strength, a three-dimensional limit equilibrium method for calculating slope stability are proposed using force equilibrium of each pillar and moment equilibrium of the whole slope body in three directions. Through case study, when all the shear forces among columns are neglected, the safety factor is similar to the result of two-dimensional Spencer method. If considering part of the shear forces among columns, the safety factor is similar to the result of the reference [5]. If considering all the forces among the columns including the contribution of transverse shear force on the slope stability, the safety factor is the highest; this assumption can reflect actual conditions of slope better and the results are closer to reality.关键词
边坡稳定分析/极限平衡/三维分析/抗滑力方向/强度发挥系数Key words
slope stability analysis/ limit equilibrium/ three-dimensional analysis/ direction of anti-sliding force/ played factor of strength分类
建筑与水利引用本文复制引用
袁恒,罗先启,张振华..边坡稳定分析三维极限平衡条柱间力的讨论[J].岩土力学,2011,32(8):2453-2458,6.基金项目
国家十·一五科技支撑计划课题(No.2008BAB29B03) （No.2008BAB29B03）
三峡库区三期地质灾害防治重大科研项目(No.SXKY3-2-2-200903) （No.SXKY3-2-2-200903）
国家自然科学基金项目(No.50839004,50909053). （No.50839004,50909053）
