湛江组结构性黏土桩基群桩效应
Journal of Guilin University of Technology(2017)
Abstract
利用自制的群桩模型装置,在湛江组结构性黏土中进行原位试验,获得不同桩间距、不同桩长情况下群桩效应系数实测值;对比分析了不同理论群桩效应系数公式计算值与实测值的误差;讨论了不同理论群桩效应系数公式的适用性.结果表明:承载力群桩效应系数实测数随桩间距增大而增大,在0.750~0.917变化;侧摩阻力群桩效应系数随桩间距增大而增大,在0.782 ~0.897变化;Converse-Labrre群桩效应系数计算值与实测数据比较吻合,相对误差在-1.9% ~ 6%;考虑应力叠加的群桩效应系数计算值与实测值相差较大.
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