大直径桩荷载传递的桩端土效应  

Effect of Pile-end Soils in Load Transferring for Large-Diameter Piles

作　　者：姜立新[1] 张亦静[1] 张春顺[1] 

机构地区：[1]湖南工业大学岩土工程研究所,湖南株洲412008

出　　处：《株洲工学院学报》2006年第4期86-89,共4页Journal of Zhuzhou Institute of Technology

基　　金：国家自然科学基金资助项目(50378097)

摘　　要：通过室内深基坑模型试验、深井荷载试验和桩的现场静载试验,系统地研究了大直径桩的桩端土效应,对桩端阻力深度效应的机理进行了深入分析。研究表明:桩端阻力的发挥不但与持力层强度有关,也与桩的入土深度、下卧层土的性质和强度、桩端直径、桩端位移及桩侧土的强度有关。Effect of pile-end soils has been systematically studied by deep pit model test in room,load test in deep well, static load test of pile on site, together with deep analysis of rules of height effect for pile end＇ s resistance. The study shows that pile-end resistance is associated with strength of the bearing layer,the depth of piles＇ entering ground,the soils＇ characteristics of the subjacent layer, the diameter of the pile, the displacement of pile-end as well as lateral strength of surrounding soils.

关 键 词：大直径桩 桩端土效应 荷载传递 

分 类 号：TU473.1[建筑科学—结构工程]