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简要介绍在珠江三角洲地区的高含水量、低强度深厚软基中应用大粒径碎石桩振动置换技术进行地基加固的效果、经过现场大型直剪试验确定大粒径碎石桩和复合地基强度指标的方法，及二个工程实例。
This paper briefly introduces the effect of applying large-diameter stone-pile vibration displacement foundation reinforcement in the high water content and low strength deep soft ground in the Pearl River Delta region. After large-scale on-site direct shear test, the strength of large-size gravel pile and composite foundation Indicators of the method, and two examples of projects.