建筑结构学报2011，Vol.32Issue(2)：126-133,8.
疏排桩-土钉墙组合支护结构工作原理
Retaining characteristics of composite structure with scattered piles and soil nailing
摘要
Abstract
Pile-soil nailing (PSN), a composite structure of scattered piles and soil nailing, is a new retaining technology.Base on the hypothesis of parabola soil arch axes and plane active failure surface between the scattered piles, the retaining characteristics of PSN were analyzed, and three types of slope failure were discussed, including slope failure in front of soil arch, strength and slope failure of soil arch and slope failure of whole structure.The formulas of the load ratio of soil nailing, the safety factors of shallow stability and base stability were derived.Parametric analysis shows that the load ratio of soil nailing decreases as the strength of soil increases and increases as the ratio of pile spacing and pit depth increases, and PSN stability decreases as the ratio of pile spacing and pit depth increases and increases as the ratio of nail length and pit depth increases.Using a practical project, the validity of this procedure is verified.关键词
深基坑/疏排桩/土钉墙/理论分析/土拱效应分类
建筑与水利引用本文复制引用
杨敏,刘斌..疏排桩-土钉墙组合支护结构工作原理[J].建筑结构学报,2011,32(2):126-133,8.基金项目
国家自然科学基金项目(40972179). （40972179）
