岩质边坡应力场特征有限元强度折减法研究

利用有限元强度折减法数值模拟技术,对成型边坡的应力场进行了研究:在坡顶荷载作用下,计算边坡内部应力场随着坡体强度指标的降低而变化的情况,分析边坡安全状态恶化对内部应力场的影响。通过对特定路径的应力追踪,对应力场的变化特征进行探讨,确定边坡的应力敏感部位,指出应力变化规律及其对边坡稳定性造成的不利影响,以克服岩质边坡以位移为参数的监测方法存在时间与空间上滞后的缺陷。

Study on Stress Field Characteristics of Rock Slope with Strength Reduction Finite Element Method

With numerical simulation technique of strength reduction finite element method,this paper studies the stress field of formed side slope.Under the effect of slope top load,it calculates the changes of slope inner stress field with the reduction of slope strength index and analyzes the influence of slope safety deterioration on inner stress field.Through stress tracing of specified route,it explores the changing characteristics of stress field to determine stress sensitivity part of slope and find the rule o...