摘要
对土质边坡圆弧滑动稳定性问题,采用应力软化模型,由系统能量导出极限平衡方程,运用突变理论方法对土坡失稳进行了分析。分析表明,边坡参数变化为某一临界值时,土坡的滑动位移突然增大,发生突变失稳现象,由刚体极限平衡稳定理论无法体现应力软化土质边坡的这种失稳的突变性。
The limit equilibrium equation for the analysis of earth slope stability is derived from the system energy by the use of the stress softening model and the instability is analyzed by the catastrophe theory. It is indicated that the catastrophic instability sliding arises accompanying an abrupt increment of the sliding-displacement when the slope parameter reaches the critical value. The limit equilibrium stability theory of a rigid body can not explain the catastrophe of instability of the stress softening earth slope.
出处
《力学与实践》
CSCD
北大核心
2004年第4期24-27,共4页
Mechanics in Engineering
基金
广东省自然科学基金(010054)
广东工业大学科研基金项目(202015
982020)资助
