摘要
微型钢管桩桩端注浆形成扩大头,可有效提高单桩抗拔承载力,是一种具有发展潜力的抗拔桩型。本文介绍一种圆柱形扩底微型钢管桩,推导不同抗拔破坏模式下的抗拔承载力计算公式,并结合工程案例对不同公式计算结果进行对比,分析总结更适用于实际工程的计算方法。研究成果可为圆柱形扩底微型钢管桩的应用提供指导和借鉴。
By pouring slurry in the bottom of micro steel pipe pile, the uplift bearing capacity of single pile can be effectively improved, which is a kind of development potential of the uplift pile. This paper introduces a cylindrical micro-steel pipe pile and deduces the calculation formulas of uplift bearing capacity under different kinds of pull-out failure mode. Comparison between the calculated value with different formula is made by combining with the engineering case. And on this basis we sum up the theo- retical calculation method that is more applicable for practical engineering. The research results can pro- vide guidance and reference for the application of this kind of micro steel pipe piles.
出处
《低温建筑技术》
2017年第6期91-94,共4页
Low Temperature Architecture Technology
关键词
注浆
微型钢管桩
抗拔破坏模式
计算方法
pouring slurry
micro steel pipe pile
pull-out failure mode
calculation method
