摘要
秦皇岛某基础设施工程项目采用冲孔灌注桩基础,在工程桩施工前,对施工中加入桩端后注浆工艺先后共做抗压、抗拔试验检测桩各2根,静载试验采用慢速维持荷载法,逐级等量加荷载,得出截然不同的试验结论;对工程实例前后试桩试验结果分析对比,采用桩端后注浆,对于提高冲孔灌注桩桩端承载力和桩侧摩阻力作用显著。
The hole-drilled bored pile technology was applied to some infrastructure project in Qinhuangdao.The post base-grouted was adopted before piles construction,and two compression test piles and pulling resistance test piles separately were tested by slow sustained loading method,which loading grew commensurable by stepped.Different experimental results were obtained.The comparison results before and after testing piles showed that there was great effect to advance bearing capacity of hole-drilled bored pile and frictional resistance of pile side.
出处
《施工技术》
CAS
北大核心
2011年第S2期13-14,共2页
Construction Technology
关键词
桩端后注浆
冲孔灌注桩
桩端承载力
桩侧摩阻力
post base-grouted
hole-drilled bored pile
bearing capacity of pile end
frictional resistance of pile side
