软岩高边坡预应力锚索抗滑桩的设计计算

目前已提出了多种预应力错索抗滑桩的设计计算方法,例如按Winkler弹怀地基梁的方法、错索与桩的协调变形的方法等.由于软弱岩体的变形特征,结构与岩体的相互作用机理较为复杂,这些方法难以直接应用于软岩高边坡工程,需要加以分析改进.应该分析预应力锚索抗滑桩的施工顺序、实际受力条件、锚索预应力的主要控制因素等,分阶段进行计算,这样得出的计算结果才有可能与实际情况一致.在充分吸取现有计算方法优点的基础上,提出了改进的方法.通过实际工程的计算,得出了较为符合实际情况的结果.

Design of Anti-slide-pile with Prestressed Anchor Rope for High Slope of Weak Rockmass

several design methods of anti-slide-pile with prestressed anchor rope are pur forward now, for example, the method on the basis of winkler elastic beam, the method according to compatible deformation between the pile and anchor rope. As the deformation is the notable characteristic of weak rockmass, and the reacting mechanism of the structure and rockmass is complex, these methods need to be improved when they are applied to high slope of weak rockmass. According to the construction workingprocedure, practice acting forces and the main factors of controlling the rope force, it is reasonable to calculate the internal for ces of the pile by steps, The improved design method is given in this paper. The calculate results from a landslide project on the basis of the method are nearly the same as results of the practice project.