楔形刚性桩承载特性室内模型试验研究  

Experimental Study on Characteristic of Behavior of Tapered Rigid Pile

作　　者：何杰[1] 刘杰[1] 闵长青[1] 陈科良[1] 

机构地区：[1]湖南工业大学土木工程学院,湖南株洲412008

出　　处：《公路工程》2008年第1期7-9,共3页Highway Engineering

基　　金：国家自然科学基金资助项目(50578169);湖南省教育厅资助科研项目(06C267)

摘　　要：我国对楔形桩的研究始于上世纪80年代,目前在部分工程已经应用。为了研究楔形桩的荷载传递特性,对一个等截面钢桩和两个不同侧壁倾角的楔形钢桩进行了室内静载模型试验。试验结果表明:楔形桩单位体积的承载力比等截面桩大,楔形桩侧壁倾角越大,单位体积的承载力提高幅度越大;桩的楔形侧面有利于发挥桩-土的共同作用,提高单桩承载力,降低桩基沉降。Tapered pile has been studied since 1980s in Chinese, and has been applied in some engineering now. In order to study the characteristic of behavior of tapered pile, a static load model test of a equal section steel pile and tow tapered steel piles with different side obliquity were done in laboratory. Test results show ： the bearing capacity per volume of tapered pile is higher than that of the equal section pile, and the bearing capacity per volume of pile is improved evidently with the increase of side obliquity on the tapered pile;and the tapered profile of pile is good for exerting pile-soil interaction, improving bearing capacity of pile, and reducing settlement of pile foundation.

关 键 词：楔形刚性桩 模型试验 承载力 桩侧摩阻力 

分 类 号：TU473.11[建筑科学—结构工程]