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提出了一种水平受荷刚性承台群桩力学简化分析方法。首先,将水平向受荷单桩视作弹性地基梁,假设桩土之间保持弹性接触不发生分离,建立水平受荷桩的位移控制方程。其次,对于水平受群桩,采用Mindlin解计算土体水平位移传递系数,认为群桩中基桩的水平位移和弯矩由两部分引起:①桩顶分配的主动水平荷载;②桩-桩水平向相互影响。再次,对于非均质地基,采用有限差分法计算群桩水平力学反应特征。本文方法与已有文献单桩、群桩在均质、非均质地基的算例进行了对比,总体上取得了较好的一致性。
A simplified method of group pile mechanics analysis of horizontal loaded rigid cap pile is proposed. First of all, considering a single pile subjected to horizontal loading as an elastic foundation beam, the displacement control equations of the horizontally loaded pile are established assuming that elastic contact between the pile and soil does not occur. Secondly, for horizontal pile groups, the horizontal displacement transfer coefficient of soil pile is calculated by Mindlin solution. It is considered that the horizontal displacement and bending moment of pile foundation in pile group are caused by two parts: ① active horizontal load of pile top distribution; ② pile-pile level To influence each other. Third, for heterogeneous foundations, the finite difference method is used to calculate the horizontal mechanical response of pile groups. The method in this paper is compared with the existing examples of single pile and group pile in homogeneous and heterogeneous foundations, and generally obtains good consistency.