Osterberg法中荷载箱位置对测桩的影响分析  

Influence Analysis of Load Cell Position in Osterberg Pile Testing Technique

作　　者：杨忠[1] 佴磊[1] 

机构地区：[1]吉林大学建设工程学院,吉林长春130026

出　　处：《岩土工程技术》2006年第2期74-76,共3页Geotechnical Engineering Technique

基　　金：吉林省交通厅科研项目(2003-1-13)

摘　　要：通过对比三颗桩现场Osterberg法实测结果,同时与预估极限承载力进行比较,分析了Osterberg法测桩技术中荷载箱位置的设置对于桩基极限承载力测试结果的影响,得出当荷载箱位置设置较高或较低时,所测极限承载力值均较低。给出了获取最佳荷载箱位置的模拟实验法,该方法以莫尔-库仑强度准则为理论依据,重点研究桩土接触面间的摩擦机制,所得结论较规范经验值和数值模拟分析法准确。The influence of load cell position on bearing capacity of 3 piles using Osterberg pile testing technique is analyzed. with their predicted values, h is found that when the load cell is positioned high or low to the bottom of the pile, the obtained bearing capacity is lower than the actual value. A suitable method is presented. The simulation test method, which bases on classical Mohl- Colum intensity theory and the friction simulation test between the pile and the ground, help to get the optimum position. The conclusion drawn from the method is more accurate than the other two methods.

关 键 词：Osterberg法 荷载箱位置 模拟试验 

分 类 号：TU473.1[建筑科学—结构工程]