以DDC灰土桩在高层建筑物地基处理的实例为素材,较系统的分析了孔内夯扩桩的成桩加固机理,认为该地基加固处理方法技术效果优效,经济效果良好,大有推广应用之前景。 Taking DDC limestone pile foundation treatment in high-rise buildings as an example, the pile-reinforcement mechanism of the rammed-expanded pile in the hole was systematically analyzed. It is concluded that the reinforcement effect of the ground reinforcement method is excellent and the economic effect is good. Prospects.