湿陷性黄土中挤扩支盘桩受力性状研究  

Mechanical Behavior Study of the Squeezed Branch Pile in Collapsible Loess Foundation

作　　者：高笑娟[1] 朱向荣[1] 

机构地区：[1]浙江大学岩土所

出　　处：《科技通报》2007年第2期237-242,共6页Bulletin of Science and Technology

基　　金：河南省科技攻关项目(991150103)

摘　　要：湿陷性黄土具有遇水发生湿陷、承载力大幅度降低的性质,这种性质直接影响到基础的承载力。本文对湿陷性黄土中的三根支盘桩进行预浸水静载荷试验。结果表明,支盘桩荷载-沉降曲线为缓变型,具有良好的承载性能,荷载传递规律与在非湿陷性黄土地基中具有相似的性质,桩身各段承载力的发挥具有明显的顺序性,本文结果为湿陷性黄土地基中支盘桩的应用提供了比较可靠的依据。As a special geological phenomenon, the character of collapsible loess foundation is collapse when penetrated by water, this character leads the foundation lose load capacity largely. Three squeezed branch piles are tested in collapsible loess foundation after prewatering processing. The results indicates that the load transfer law of squeezed branch pile is similar to that in the ordinary soil. The velocity of load-settlement curve changes slowly and the pile has high load capacity. The principle of load transfer has apparently sequence. This results may be used for reference to the same kind of construction project.

关 键 词：湿陷性黄土地基 挤扩支盘桩 预浸水 静载荷试验 

分 类 号：TU473.11[建筑科学—结构工程]