刚性承台下柔性群桩与地基相互作用的线性分析  

LINEAR ANALYSIS OF INTERACTION FOR FLEXIBLE GROUPED PILES AND SOIL UNDER RIGID CAP

作　　者：刘杰[1,2] 张可能[3] 

机构地区：[1]株洲工学院土木工程系 [2]中南工业大学资源环境工程学院,湖南长沙410083 [3]中南工业大学资源环境工程学院

出　　处：《铁道工程学报》2002年第4期38-43,共6页Journal of Railway Engineering Society

摘　　要：对桩侧土及桩端土均采用线性荷载传递函数 ,同时考虑桩周土所分担的荷载对桩基荷载传递规律的影响 ,利用力学理论及微分方程的近似解法—子域法 ,推导出了刚性承台下柔性群桩与地基相互作用的近似解析算式。在刚性承台下 ,中桩最大侧摩阻力出现在桩端 ,边中桩、角桩最大侧摩阻力出现在桩顶附近 ,角桩桩顶反力最大 ,边中桩次之 ,中桩最小。为了验证本文方法的可行性 ,将模型试验结果与本文计算结果进行了比较 ,对比表明Based on linear load deliver function to pile side soil and pile end soil,and considering influence of sharing load of the pile side soil on load deliver law of piles,Using mechanics theory and approximate solution method district method of differential equation,approximation analytical formulas of interaction for the flexible grouped piles and soil are derived under rigid cap.The maximal pile side friction force of central pile show up in pile end,the maximal pile side friction force of edge pile and angle pile show up near pile top,under rigid cap.The pile top counter force of the angle pile is the biggest,the edge pile is the second,the central pile is the smallest.To verifying the reliability of the proposed method,the results of the model test are compared with the results in this parer,contrast snunciation:the proposed method has good precision.

关 键 词：刚性承台 柔性群桩 线性分析 相互作用 模型试验 桩周土 复合地基 

分 类 号：TU44[建筑科学—岩土工程] TU473.1[建筑科学—土工工程]