深基坑单桩竖向抗拔静载承载力测试研究  

Static Load Uplift Testing of Single Pile in Deep Pit

作　　者：舒跃华[1] 谢渊洁[1] 施正芝[1] 

机构地区：[1]昆山市建设工程质量检测中心,江苏昆山215337

出　　处：《工程质量》2013年第5期9-12,共4页Construction Quality

摘　　要：通过反力装置进行7根钻孔灌注桩单桩竖向抗拔静载承载力现场测试,并与自平衡法结果进行了比较,分析了影响钻孔灌注桩抗拔承载力的原因。指出工程试桩选型、严把钻孔灌注桩质量的必要性,提出了在饱和粉土、粉砂层利用钻孔灌注桩作抗拔桩使用时应结合后注浆工艺的建议。With reaction devices, uplift static load testing of 7 bored cast-in-place piles in field was carried out, and compared with self-balance method results, giving the reasons which affect the pullout capacity. Point out the importance of the choices of pile type and construction quality control of bored cast-in-place pile. It＇s better to choose post-grouting process with bored cast-in-place pile for pullout in saturated silt layer.

关 键 词：钻孔灌注桩 抗拔 静载试验 自平衡法 

分 类 号：TU473.11[建筑科学—结构工程]