张  健
    (桂林市工业设计研究院 541001)

[提要]  某电力大楼桩基础应用软岩层地基载荷试验结果设计大直径挖孔扩底桩，取得了单桩承载力高、施工工期短、质量可靠、减少投资的效果。
[关键词]  扩底桩 承载力  软岩层

For the pile foundation of an electricity building,  the results of soft rock plate loading test was adopted in design of the large diameter clud-footed piles with man-made hole. The big bearing capacity of individual pile, short construction term, reliable quality and lower investment were achieved.
Keywords:  clud-footed pile; bearing capacity; soft-rock foundation; excavation