灌注桩施工重难点分析及技术控制措施

Analysis of Critical Aspects and Quality Control of Bore and Cast-in-Place Concrete Pile Installations

钢筋混凝土灌注桩施工受地层变化及周边环境的影响,施工过程中经常遇见不同的重难点情况。结合多年的现场施工经验,从钻孔灌注桩施工前及施工过程中可能遇到的重点和难点问题进行分析,并提出相应的技术控制措施。主要从施工现场场地布置、桩基础定位、泥浆和沉渣的控制、桩顶浮浆的控制等方面进行分析,可为今后的灌注桩施工提供一定的参考。

The construction of bored reinforced concrete cast-in-place pile might be affected by soil strata changes and surrounding environment.Critical aspects in the bored concrete pile installation are presented in this paper.Based on authors’field construction experience,this paper analyzes the key and difficult problems that may be encountered before and during the installation of bored piles,and the correspondent control measures are also proposed.This paper mainly evaluates the construction equipment staging layout,pile foundation positioning,slurry and sediment control,waste concrete control at the top of pile and other aspects,as a guide for the better pile installation practice.