全夯式扩底灌注桩在皖南地区某工程中的应用

The Application of All-course Ram-compaction Pile in a Project of South Anhui Province

全夯式扩底灌注桩是在普通沉管夯扩桩基础上研制成功的一种新型夯扩灌注桩,它改进了桩机设备和成桩工艺,解决了普通沉管夯扩桩成桩容易造成颈缩等缺陷问题,大大提高了单桩极限承载力,同时也大大节省了工程造价。

All-course ram-compaction pile is a new type of grouting pile developed from normal rarmning-expanded sunk pipe. With the application of this pile, the pile driver and pile formation techniques are improved： defects such as necking that usually happen in the normal ramming-expanded sunk pile are solved; the bearing capacity of single pile is increased and construction cost is saved at the same time.