双排抗滑桩在三种典型滑坡的计算与受力规律分析

传统的抗滑桩计算方法存在很多问题,特别是双排抗滑桩更加无法计算,不能计算出作用在双排抗滑桩上的抗力和推力的分布规律,往往是凭借主观经验分析解决,常常会造成不合理的浪费。采用强度折减的有限元法,讨论了两排桩在3种不同类型滑坡中,在不同的折减系数下随排距的变化,两排桩的桩前抗力、桩后推力、实际承担推力等的变化规律,得出了一系列关于双排桩合理受力与设桩位置的建议。由于讨论了不同类型的情况,所以结论具有普遍性,能为工程设计提供依据。

Two-row anti-slide piles in three kinds of typical landslide computations and stress rule analysis

There exist some problems in the traditional anti-slide pile calculation method; especially for the two row piles, this method cannot be used to calculate the distribution of force and thrust on the piles. It is often analyzed by subjective experience so as to cause unreasonable waste. This paper adopts the strength reduction method of finite element to discuss the change of the force before pile, the force after pile and actual force on the two row piles in three different types of landslide with different parameters, along with the change of two row spacing. Some suggestions of two row piles reasonable stress and position are proposed. Due to the different types of conditions are discussed, so the conclusion is universal, and can provide basis for engineering design.