旋扩珠盘桩最优盘位和盘间距的确定  

Design of the optimum plate position and the distance between two Adjacent plates of rotated plate piles

作　　者：高笑娟[1] 祁春伟 

机构地区：[1]河南科技大学建筑工程学院,河南洛阳471003 [2]河南省地质矿产局,河南洛阳471039

出　　处：《工程勘察》2009年第1期13-17,共5页Geotechnical Investigation & Surveying

基　　金：河南科技大学博士基金项目(09001210)

摘　　要：旋扩珠盘桩承力盘的位置和间距是影响其承载力的重要因素,由于小直径旋扩珠盘桩具有盘径比(D/d)较大的特点,如果按照挤扩支盘桩对承力盘间距取值的要求进行设计,有些情况下会使桩承载力降低,甚至达不到设计要求,给工程带来损失,也限制了旋扩珠盘桩的发展。本文结合实际工程中的双盘珠盘桩遇到的问题,用有限元方法分析了承力盘的最优盘位置和最优盘间距,得出了一些有益的结论,可为相似工程提供参考。The plate position and the distance between the two adjacent plates are the important factors to influence the bearing capacity of rotated plate pile. Because of the larger ratio of the plate diameter and the pile diameter, the bearihng capacity of the rotated plate pile may be reduced owing to usihg the design method of the squeezed branch and plate piles ,and sometimes the bearing capacity of the pile doesn＇t meet the design requirement,which leads to loss of the project and limits the development of the new type of the piles.The plate position and distance between the two adjacent plates of the rotated piles are studied by using finite element method based the data from static load tests.Some valuable results are obtained which may provide the practice reference for the similar projects.

关 键 词：旋扩珠盘桩 静载荷试验 盘间距 有限元方法 

分 类 号：TU473[建筑科学—结构工程]