大直径空心桩技术现状及环形孔钻具的研究

Research on Technical Present Situation and Annular Hole Drilling Tool in Large Diameter Hollow Pile

摘要:

概述了大直径空心桩施工技术的发展现状 ,在调研分析的基础上 ,借鉴地下连续墙施工技术 ,提出了一种新型的环形孔钻具 ,并对其结构、工作原理、应用条件及施工步骤等进行了阐述

Abstract:

Present situation of constructing technique of large diameter hollow pile is outlined. Based on investigation and analysis and using underground continuous wall technology for reference, a new type of annular hole drilling tool is presented. The structure, working principle, applying condition, and constructing procedure of the new drilling tool are elaborated in this paper.