CFG桩复合地基在施工中的质量控制

Quality Control of CFG Pile Composite Foundation in Construction

CFG桩又称水泥粉煤灰碎石桩,是将水泥、粉煤灰、碎石等原料按照一定的比例加水拌和,使用各种成桩机械设备来制作可变强度桩,CFG桩在施工中可能会存在很多问题。本文介绍了CFG桩的施工原理以及施工流程,对施工过程中CFG桩复合地基的质量控制进行了分析,对CFG桩复合地基施工过程中可能出现的机械设备发生故障、出现断桩和串孔现象、上部桩体的不密实、拔管速率控制不当、导管堵塞等问题,提出了相应的解决措施。

CFG pile,also known as cement fly ash gravel pile,is to mix raw materials such as cement,fly ash and gravel with water in a certain proportion,and use various pile machinery to make variable strength piles.CFG piles may have many problems during construction.This paper introduces the construction principle and construction process of CFG piles,analyzes the quality control of CFG pile composite foundation during construction,and proposes the corresponding solutions for the problems of mechanical equipment failure,broken pile and string hole phenomenon,uncompacted upper pile body,improper control of pipe extubation rate,and pipe blockage may occur during the construction of CFG pile composite foundation.