刚性承台下柔性群桩和桩周土荷载传递规律研究  

STUDY ON TRANSFERRING FOUNDATION OF LOAD OF GROUPED FLEXIBLE PILES AND SOIL SURROUNDING PILE BENEATH THE RIGID CAP OF PILE

作　　者：刘杰[1] 张可能[2] 

机构地区：[1]株洲工学院 [2]中南大学

出　　处：《土木工程学报》2004年第7期82-87,共6页China Civil Engineering Journal

基　　金：湖南省教育厅基金资助项目 (NO :0 1B0 2 7)

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基桩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 ,研究了刚性承台下柔性群桩及桩周土的荷载传递规律。得到了在刚性承台下 ,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 ,中桩最小等有意义的结论。为了验证本文方法的可行性 ,作者将模型试验结果与本文计算结果进行了比较 ,对比表明Adopting Linear load transferring function for pile side and pile end soil and considering influence of shared load of soil surrounding pile on transferring law of load,transferring foundation of load to flexible grouped piles and soil surrounding pile were studied beneath the rigid cap of pile by theory of mechanics and method of approximative solution-subdomains.It was concluded by study that beneath the cap of pile,the maximal frictional force of pile-side for the middle pile occurs at pile-end,and that for either the middle side-pile or angle-pile occurs near the pile-top.Reaction of pile-top for angle-pile is maximal,and that for the middle side-pile is taken second place,that for middle pile is minimum.Results from calculation compared with that from model test showed its good precision.

关 键 词：刚性承台 柔性群桩 荷载传递 微分方程 模型试验 

分 类 号：TU471.2[建筑科学—结构工程] TU473.11[建筑科学—土工工程]