浅析小直径抗滑桩＋锚索支护体系设计思路

抗滑桩是防治滑坡的一种常用工程结构物，在我国，抗滑桩的设计已有一定的历史，但在具体设计过程中，受多年一些技术文件及工程经验的影响，其断面以2m×3m最为常见，嵌固段以1／3—1／2桩长为宜，但近年来，随着桩锚体系的发展，不断地探索抗滑桩的断面及嵌固段深度的设置，已成为了业内人士讨论的话题。现通过工程实例，详细介绍了小直径抗滑桩＋锚索支护体系的适用范围、设计思路及布置原则，可供有关方参考。

Design of Small Diameter Anti-Landslide Bored Piles with Ground Anchor System

The large diameter anti-landslide bored pile is a conventional measure in a landslide remediation design.Under the influence of various industrial design codes,technical documents,as well as construction experience,the diameters of these piles are between 2 and 3 meters with a embedment depth of 1/3 to 1/2 of the pile length below the potential slip surface.With the recent development of ground anchor systems,discussions have been raised regarding the required bored pile diameter and the embedment depth.This paper presents a case history of a remediation using small diameter anti-landslide bored piles and ground anchors.Design principles of the remediation work are also introduced.