各向异性和非均质边坡的桩板墙加固机理研究

Reinforcement Mechanism of Slab-pile wall Acting on Anisotropic and Inhomogeneous Slope

边坡土体普遍具有强度各向异性和非均质性,但此两种特性往往在边坡稳定性分析中被认为忽略,导致了分析结果与实际情况的偏差。借助极限分析上限法,对考虑土体各向异性和非均质性的边坡桩板墙加固机理及边坡稳定性进行研究,通过对数螺旋曲线破坏模式,获得临界状态下桩板墙最小抗力上限解。通过参数响应分析揭示各参数对桩板墙加固效果和边坡稳定性的影响规律,以指导工程施工。

Anisotropy and non-homogeneity are common characteristics for soils. However,these two natural characteristics are commonly ignored by researchers for convenience which brings the analysis results an error to physical truth. Based on limit analysis method,a research on reinforcement mechanism of slab-pile wall acting on anisotropic and inhomogeneous slope is conducted by this paper and the upper bound solution of slab-pile wall resisting force is obtained by optimization in the basis of logarithmic spiral failure mechanism. Influence rules of parameters on objective function are revealed through parametric analysis in order to reference for practical engineering construction.