正循环法钻孔灌注桩施工介绍及控制

钻孔灌注桩是按成桩方法分类而定义的一种桩型。按钻孔机械分正循环、反循环、选挖钻、冲击钻等;按施工条件分路上及浅水钻孔桩、深水钻孔桩、岩溶发育段钻孔桩、AM干取土全液压扩底钻孔桩及水中桩等。该文就正循环法钻孔灌注桩的施工方法作了阐述,并针对钻孔过程中出现的各种问题,提出相应的处理办法,供同行参考。

Introduction and Control of Constructing Cast-in-place Pile by Normal Circulation Method

The cast-in-place pile is a pile type defined by the classification of the pile finishing methods.The drilling mechanism is divided into the normal circulation,reverse circulation,rotary drilling and percussion drill.The piles are divided into the road and shallow water bored pile,deep-water bored pile,karst developing sectional bored pile,AM dry soil full hydraulic expending bored pile and in-water bored pile according to the construction conditions.The article sets forth the construction method of cast-in...