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为研究软土中刚性桩水平承载性状,设计开展了离心机试验,分析不同桩端情况和截面形状刚性桩水平承载特性及桩土相互作用。结果表明:闭口桩的水平承载力大于开口桩;桩土响应处于线弹性阶段时,水平荷载-桩顶位移曲线与桩端类型和截面形状无关;桩身材料、桩端开口形式及桩入土深度相同时,H形桩水平承载力最大,而圆形桩最小。综合分析试验结果表明:归一化桩顶水平荷载-桩顶水平位移曲线符合指数函数关系。
In order to study the horizontal bearing behavior of rigid piles in soft soil, a centrifuge test was designed to analyze the horizontal bearing behavior and pile-soil interaction of different pile ends and cross-sectional rigid piles. The results show that the horizontal bearing capacity of the closed piles is larger than that of the open piles. When the pile-soil response is in the linear elastic phase, the horizontal load-pile displacement curve has no relation with the pile end type and the cross-sectional shape. The pile material, The same, H-shaped piles horizontal bearing capacity of the largest, while the smallest circular piles. The results of comprehensive analysis show that the normalized pile-top horizontal load-pile horizontal displacement curve accords with exponential function.