半解析法求水平承载桩的反应特性

研究水平承载桩反应特性的传统方法,如k法、c法及m法等,都是基于对土反力与桩水平位移关系随深度按某种规律变化的假设。本文在分析实测资料的基础上,得出了一个可精确描述水平承载桩弯矩的数学表达式;并以弹性梁理论为基础。进一步得出了剪力、土反力以及桩水平位移的计算公式。由本文方法反算的p-y曲线与API规范推荐方法结果吻合很好。本文给出了说明如何用之于设计的例题,并与以Janbu的构造p-y曲线的方法为基础的有限单元法分析结果进行了比较。

A Semi-Analytical Solution to the Behaviour of Laterally Loaded Piles

Conventional methods of researching the behaviour of laterally loaded piles are usually based on the assumptions of the relations between the horizontal displacement of the pile and the reactive force of soil along the depth. By analyzing the observed data from field tests, an equation is proposed in this paper, with which the bending moment distribution along a laterally loaded pile is simulated. According to the beam theory, then expressions of the soil resistance, shear fores and deflection of the pile can be derived.