复合地基CFG桩施工技术应用研究

摘要

CFG桩（或水泥粉煤灰碎石桩）是一种基于沉管碎石桩的软弱地基处理方法，其具有灌注方便、施工工艺简单、施工质量易控制、施工成本低等优点。随着城市建设规模的扩大，CFG桩被逐渐引入城际轨道复合地基的处理领域。本文结合某城际轨道复合地基CFG桩施工案例，从CFG桩施工控制要点与注意事项等多方面对其进行了研究，以期提高CFG桩在某城际轨道复合地基领域的应用效果。%CFG pile (or cement fly-ash gravel pile) is a kind of soft foundation treatment method based on the gravel pile sinking pipe, which have many advantages of convenient per-fusion, simple construction technology, easy to control the co-nstruction quality, and low cost construction. With the scale enlargement of urban construction, CFG pile has been gradu-al y introduced to the processing field of inter-city rail com-posite foundation. In this article, the author combines with the CFG pile construction case of inter-city rail composite foun-dation, explores the several aspects of the key points and ann-ouncements of CFG pile construction so as to improve the CF-G pile in inter-city rail application effect in the field of com-posite foundation.