预应力锚索抗滑桩加固边坡(滑坡)的稳定性分析

预应力锚索抗滑桩作为一种实用有效的支挡工程措施己在边坡整治工程中得到了广泛地应用,然而其理论研究远远滞后于工程应用。本文以极限平衡理论为基础,假定滑动面为圆弧面或近似于圆弧面,采用Bishop（毕肖普法）法,并考虑竖向条间剪力对滑移面抗剪强度的影响,建立了滑坡最危险滑移面的搜索模型,并推导了稳定系数的求解公式,运用遗传算法对支护结构最危险滑移面进行动态搜索和确定,计算其稳定性系数,避免了在优化设计中陷入局部最小值的缺点,更具有有效性和准确性。

SLOPE STABILITY ANALYSIS OF PRESTRESS ANCHORED SLIDE-RESISTANT PILE

The technique of stabilizing piles with prestressed cables is an effective measure in landslide remediation works, which being used widely has in mary fields. On the basis of limiting equilibrium theory in this papper, supposing sliding surface is a circle surface or approximate arc surface, a searching model of the most danger sliding surface is set up by the way of Bishop. At the same time, the influence of the surface shear strength enforced by vertical shear between stripes is considered, and the solving formula for coefficient of stability is deduced. The genetic algorithm is employed to effectively determine the most dangerous sliding surface with consideration of the supporting structure, which can avoid the problem of dropping to a local minimum value for stability coefficient in the process optimization design.