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在综合分析抗滑桩受力特点,归纳总结多个工程经验的基础上,提出了h型抗滑桩的三种土压力模式;基于ANSYS软件建立有限元模型,分析矩形、三角形和梯形等三种土压力作用下h型桩的内力分布特点,同时考虑桩前滑体被动土压力作用对h型抗滑桩内力分布的影响;利用桩顶位移与桩体最大弯矩双控指标对h型抗滑桩的几何参数进行了优化.结果表明:对于矩形截面h型桩,当前后桩间距取2.5~5倍桩截面宽度,连梁高度为1~2倍桩截面宽度,连梁刚度为桩身刚度的4~5倍时,桩身受力最为合理.
Based on a comprehensive analysis of the characteristics of the anti-slide pile force and the summarization of the experiences of several projects, three types of earth pressure modes of the h-type anti-slide pile are proposed. Based on ANSYS software, the finite element model The effect of the earth pressure on the internal force distribution of the h-type piles and the influence of the passive earth pressure on the internal force distribution of the h-type anti-slide piles are also considered. By using the double-control index of pile top displacement and maximum bending moment of the h- The geometric parameters of the anti-slide pile are optimized.The results show that for the rectangular section h-type pile, the width of the post-pile is 2.5 ~ 5 times the section width of the pile, the connection beam height is 1 ~ 2 times the section width of the pile, 4 to 5 times the body stiffness, the pile is the most reasonable force.