The compaction-under reamed bored pile is a new type one with high bearing capacity and low settlement. The comparative tests of compaction-under reamed bored piles and column bored piles at same sites separately in Jiaxing and Huzhou city of province Zhejiang were studied through self-balanced method . The result testifies that compaction-under reamed bored piles obtain good results under the same geological conditions, such as increasing pile bearing capacity up to 75.3% and reducing settlement and pile length. Moreover, the experimental formula of the bearing capacity of the new type of pil...
