支盘桩的抗拔机理及工程应用  

STUDY ON UPLIFT MECHANISM AND ENGINEERING APPLICATION OF DISK PILES

作　　者：张宝钿 卢成原[2] 

机构地区：[1]浙江省机电设计研究院有限公司,杭州310002 [2]浙江工业大学建工学院,杭州310032

出　　处：《建筑技术》2009年第9期843-846,共4页Architecture Technology

基　　金：浙江省自然科学基金项目(Y1080440)

摘　　要：在对支盘桩抗拔机理理论分析的基础上,设计了一个室内模型试验装置来研究支盘桩的抗拔承载和变形性能,并与等直径桩进行比较。对等直径桩、单盘支盘桩、双盘支盘桩分别进行了上拔加载试验,证明支盘桩的抗拔承载力远高于等直径桩;同时由于支盘桩在抗拔时和抗压时的承载机理不同,如果设计不合理,设多盘时的抗拔承载力反而会低于单盘支盘桩的抗拔承载力。Based on the analysis of the uplift mechanism theory of the disk piles, a model test device was designed to study the uplift bearing capacity and deformation behavior of the disk piles and to compare with the equivalent diameter piles. Uplift loading tests were carried out on the equivalent diameter pile, the single- disk pile and the double-disk pile respectively. Through the test, it was proved that the uplift bearing capacity of the disk piles was much better than the equivalent diameter pile, The bearing capacity of the single-bell piles was better than the double-bell piles in the test. This was mainly related to the embedded depth of the upper bell was not enough and the specific failure mode. So, a reasonable design was necessary.

关 键 词：支盘桩 抗拔特性 工程应用 

分 类 号：TU473[建筑科学—结构工程]