水泥粉煤灰碎石桩在加固道路地基中的运用

On Cement Fly-ash Gravel Pile Applied in Road Foundation Reinforcement

武汉西部一条二级公路,途经沼泽地带,采用水泥粉煤灰碎石桩(CFG桩)加固地基,大大提高复合地基的承载能力。详细介绍了CFG桩的构造特点、设计原则及施工工艺流程,阐述了实际效果。表明采用CFG桩处理地基,可缩短工期,降低工程造价,处理后的地基承载力提高4倍左右,且总体沉降量小。

There is a second-class highway by swamp area in the west of Wuhan, adopting CFG pile to strengthen the foundation and to improve greatly the load capacity of complicated foundation. The constructional characteristics, design principles and construction technological process of CFG pile were introduced in details. And its practice effect was carried out in this paper. The result showed that CFG pile could shorten the project period and decrease the cost. Foundation load capacity after the treatment could increase about 4 times with a small total settlement amount.