Study on the Bearing Capacity of Post Grouting Bored Pile with Hole Dry Drilling by Rotary Rig Based on the Self-Balanced Method
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Zhuan Wang, Jianxu Long, Zengtao Hao
Based on a project of high level middle pile foundation in Karst area of Guizhou, this paper carries out the self-balanced static load test on post grouting bored piles with holes dry drilling by rotary rig. Through the test and the analysis of 6 bored piles in the construction site, it is found that in Karst areas, the bearing capacity of rotary drilling bored piles improves after post-grouting; the deformation resistance capacity improves significantly.
Bored Pile; Grouting; Self-Balanced Method