圆桩支护排水系统组合结构在复理石边坡支护中的应用

为解决在建黑山南北高速公路复理石边坡牵引式工程滑坡、滑塌问题，提出采用钻孔灌注桩预支护后开挖实施桩间支护，建立完善桩间排水系统的新型圆桩支护排水方案，并详细介绍了悬臂式桩支护、锚拉式桩支护、承台式双排桩支护的工程应用及选取代表段采用有限元强度折减法进行分析。结果表明:圆桩支护排水系统组合结构优势明显，能较好地解决复理石边坡的滑塌问题。

Application of Combined Structure of Drainage System for Circular Pile Supporting in Flysch Slope Supporting

In order to solve the problem of landslide and collapse in the traction engineering of the flysch slope of the north-south expressway in Montenegro, a new drainage scheme for circular pile supporting is proposed, which excavates and supports between piles, and establishes the drainage system between piles after the pre-supporting of bored pile. The engineering application of cantilever pile supporting, anchored pile supporting and double-row pile supporting with pile cap is introduced in detail and representative sections are selected to analyze by finite element strength reduction method. The results show that the combined structure of drainage system for circular pile supporting has obvious advantages, which can better solve the problem of the collapse of the flysch slope.