黄土地区旋挖钻孔灌注桩施工要点

On construction points for rotary bored piles in loess areas

以旋挖钻孔桩的施工为例,介绍了钻孔灌注桩施工中的质量控制措施,分析了桩位测定、泥浆质量、垂直度控制、终孔深度、沉渣厚度、浇筑作业等环节控制要点,总结了塌孔、超径等常见质量问题及处治措施。

Taking the construction of the rotary bored piles as the example,the paper introduces the quality control measures in the bored piles,analyzes the controlling points in the pile location measurement,mud quality,verticality control,end-hole depth,sediment thickness,and grouting,and sums up the common quality problems in collapses and over-size,as well as the treatment.