摘要
针对某工程两根冲孔灌注桩竖向抗拔静载试验不满足设计要求,建议设计冲孔灌注桩单桩竖向抗拔承载力特征值应考虑泥浆护壁的影响,宜通过现场单桩上拔静载试验确定,进行后注浆可以改善桩周土体性能,提高单桩竖向抗拔承载力。
The static uplift load tests on two percussively formed cast-in-place concrete piles indicated that the uplift resistance did not meet the design requirements.The uplift resistance estimation should consider the influence of the slurry in the pile installation,and the limit uplift resistance should be determined by the static load testing since the large variations of different estimation methods.The piles were post grouted and the uplift resistances are significantly improved.
出处
《土工基础》
2015年第3期181-183,共3页
Soil Engineering and Foundation
关键词
冲孔灌注桩
单桩竖向抗拔试验
承载力特征值
泥浆护壁
后注浆
Percussively Formed Cast-in-Place Concrete Piles
Single Pile Static Uplift Loading Tests
Axial Uplift Capacity
Slurry for Borehole Stability
Post Grouting
