CFG复合地基在高层建筑地基处理中的应用

Application of CFG composite foundation in ground treatment of tall Buildings

CFG桩是现行《建筑地基处设计规范》的一种地基处理方式,适用于处理粘性土、砂土、及粒径较小的卵石地基。成桩工艺采用长螺旋钻孔成孔,管内泵压混凝土成桩钻孔到预定标高后,打开管底阀门向关内泵压混凝土,边提钻边呀混凝土,直至灌至桩顶标高,成桩完成。

CFG pile is a kind of foundation treatment method in the current ＂Technical Code for Treatment Design of Building Foundation＂, which is suitable for dealing with cohesive soil, sand and pebble foundation with smaller particle size. Pile technology applicates long augers to drill into the hole, and the tube pumps concrete into the pile. After drilling to a predetermined elevation, the bottom of the pipe is opened to pump the concrete into the pipe. The concrete is drilled until the pile is filled, thus the pile is completed.