不同桩体材料超长单桩室内模型试验  

Model Test Study on Simple Super-Long Pile of Different Materials

作　　者：李颖[1] 陈正发[1] 李晓红[2] 王成[2] 

机构地区：[1]山东理工大学建筑工程学院,山东淄博255049 [2]重庆交通大学土木建筑学院,重庆400074

出　　处：《济南大学学报（自然科学版）》2011年第4期426-430,共5页Journal of University of Jinan(Science and Technology)

基　　金：山东省自然科学基金(ZR2009FM020)

摘　　要：对竖向荷载作用下的不同桩体材料超长单桩进行模型试验研究,分析其承载机理和变形特性,研究两种材料超长单桩的荷载-位移特性,桩侧摩阻力、桩端阻力的发挥性状,桩侧摩阻力和桩-土相对位移的关系以及桩身压缩量。结果表明,桩身材料的性质在很大程度上影响了超长单桩的承载和变形机理,超长单桩设计中应重视桩身材料的选择。Through design and implement of model test, the mechanisms of beating and deformation of simple super-long pile of dif- ferent materials under vertical load are analyzed and the characteristics of P-S curve,the side friction of pile,the tip resistance of pile, the relationship of pile parietal resistance and relative displacement between pile and soil and compression of pile are studied. The re- suits of analyses indicate that the influence of pile shaft material affects the mechanism of bearing and deformation of single super-long pile, therefore, the selection of material is necessary.

关 键 词：超长单桩 承载机理 变形机理 荷载-位移曲线 

分 类 号：U447[建筑科学—桥梁与隧道工程]