南通地区单桩荷载传递双曲线模型的参数统计分析  

Statistical Analysis on Hyperbolic Model Parameters from Load Transfer Method for Single Pile in Nantong Area

作　　者：金超 黄志宏[2] 

机构地区：[1]中铁四局集团第一工程有限公司,合肥230041 [2]东南大学土木工程学院,南京210096

出　　处：《路基工程》2012年第5期13-16,共4页Subgrade Engineering

基　　金：西部交通建设科技项目(2009318494041)

摘　　要：在南通市的粉土、粉砂、粉质粘土大量试桩实测数据的基础上,选取Seed&Reese双曲线模型进行拟合分析,分别对该地区不同土层的参数a,b,ab,bb进行统计分析,得出参数a在0.024 8～0.116 6之间,均值为0.064 0,b在0.023 4～0.039 2之间浮动,均值0.027 6;参数ab在0.000 8～0.002 2之间,均值为0.001 6,bb在0.000 2～0.000 6之间,均值为0.000 4。用实际工程进行对比验证,结果表明将该方法统计得到的双曲线模型参数作为南通市的地区性摩擦桩的经验参数是可靠的。Based on a large number of data from field pile tests for silt, silty sand and silty clay in Nantong City, Seed ＆ Reese Hyperbolic Model is selected to carry out the fitting and analysis in sueh manner that the parameters a, b, ab, bb of different soil layers in this area are counted and analyzed respectively. As a result, the parameter a ranges from 0. 024 8 to 0. 116 6 with the mean value of 0. 064 0; the parameter b from 0. 023 4 to 0. 039 2 with the mean value of 0. 027 6 ; the parameter ab from 0. 000 8 to 0. 002 2 with the mean value of 0. 001 6 ; the parameter from bb 0. 000 2 to 0. 000 6 with the mean value of 0. 000 4. practical engineering results, the results show that the hyperbolic model parameters from are reliable as the empirical parameters of friction pile in Nantong region. Compared with the this statistical method

关 键 词：摩擦桩 荷载传递法 双曲线模型 参数分析 

分 类 号：TU473.11[建筑科学—结构工程]