钻孔咬合桩的配筋计算方法

Computational Method of Reinforcement of the Borehole Cast-in-place Pile

钻孔咬合桩作为地下工程的新型围护结构,现在我国沿海地区的应用日趋广泛,但它的设计计算方法尚未完善。作者根据不同的咬合桩结构形式,归纳推导出简化的配筋计算方法,通过实例验算,能满足实际工程的要求。同时为了对咬合桩进行变形和稳定性分析,利用抗弯刚度相等的原则,把咬合桩围护结构等代为地下连续墙,然后利用比较成熟的地下连续墙理论来对其进行分析。

The borehole cast-in-place pile as a new exterior-protected construction of the underground engineering, has extensive application in the foreland, but its design and calculation methods are still immature. According to the different structural style of the borehole cast-in-place pile, this paper deduced a simplified calculation method for reinforcement, which can satisfy the requirements of the practical projects and was verified by several examples. In order to analyze the deformation and stability of the pile, this paper takes the borehole cast-in-place pile equivalent to the continuous concrete wall, based on the principle of equal flexural rigidity.