挤扩支盘桩受力性状的研究  

STUDY ON BEARING BEHAVIOR OF SQUEEZED BRANCH PILE

作　　者：钱德玲[1,2] 

机构地区：[1]合肥工业大学土建学院 [2]中国地质大学研究生院武汉430074

出　　处：《岩石力学与工程学报》2003年第3期494-499,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50278030)

摘　　要：通过载荷试验证明,挤扩支盘桩由于桩身不同位置设置了多个支或盘,使其荷载传递性状发生了根本的改变,因而它的承载力及沉降等方面也发生了变化。基于静载试验,研究和分析了挤扩支盘桩的荷载传递性状,提出了用经验公式计算极限承载力时采用的修正系数,并应用于本次试验,计算值与实测值较吻合,同时,还分析了挤扩支盘桩承载力的影响因素。It is proved by loading test that the loading transfer behavior of squeezed branch piles has changed because at different places of the pile body are located many branches or disks. The loading transfer behavior of squeezed branch pile is studied and analyzed based on static loading test,and the modified coefficients used for calculation of limit bearing capacity with empirical formula are proposed and used in this test. It is shown that the calculated results and test data are in good agreement. The effect factors of squeezed branch piles are analyzed at the same time.

关 键 词：土力学 挤扩支盘桩 荷载传递性状 影响因素 静载试验 

分 类 号：TU473.13[建筑科学—结构工程]