基于桩间距计算的梯形抗滑桩桩侧角取值

梯形断面竖向预应力锚索抗滑桩是治理水毁滑坡的一种新型抗滑桩结构,桩间土拱特征区别于常规抗滑桩,仍然利用传统抗滑桩土拱受力模型显然不合理。对桩间土拱的形成特征进行了分析,建立了梯形抗滑桩的计算模型,分别推导不同形式的桩间距计算公式,并通过工程应用对比各算法的桩间距;同时,基于桩间距计算的基础,分析桩侧角对桩间距的影响,界定桩侧角的设计取值范围,并探讨较佳角度的取值,为同类工程提供理论参考。

Side angle of trapezoidal anti-slide pile based on distance calculation between piles

A trapezoidal cross-section vertical pre-stressed anchor anti-slide pile is a new type of structure to manage water damage related landslide,and the characteristics of soil arch between piles are different from those of conventional anti-slide piles.It is obviously unreasonable to continue using the traditional anti-slide pile and soil arch model.In this paper,the formation characteristics of soil arch between piles are analyzed,the calculation model of trapezoidal anti-slide pile is established,the calculation formulas of pile spacing in different forms are derived respectively,and the pile spacing of each algorithm is compared by engineering application.At the same time,based on the calculation of pile spacing,the influence of pile side angle on pile spacing is analyzed,the design value range of pile side angle is defined,and the better angle value is discussed,providing theoretical reference for projects of the same kind.