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基于指数荷载传递模型的单桩承载力特性分析
引用本文:张亦静,肖宏彬.基于指数荷载传递模型的单桩承载力特性分析[J].建筑结构,2012(7):119-122.
作者姓名:张亦静  肖宏彬
作者单位:湖南工业大学土木工程学院
基金项目:国家自然科学基金资助项目“膨胀土非线性流变特性研究”(50978097);湖南省自然科学基金资助项目“膨胀土固结与流变特性研究”(08JJ3092)
摘    要:在桩基模拟试验的基础上提出一种指数型桩身荷载传递模型,该指数模型所需参数只有两个,且物理意义明确。引入该指数模型,并基于桩端荷载-位移关系为双曲线的假设,推求了桩-土共同作用的微分方程,经过对方程进行求解,得到了单桩桩身荷载与沉降关系的解析解,进而得到桩顶的荷载-位移曲线,可用于确定桩的承载力。工程实测结果与本文解析解结果的对比表明,较为吻合。

关 键 词:荷载传递函数  荷载-沉降关系  指数函数

Analysis on bearing capacity of single pile based on exponential load transfer model
Zhang Yijing,Xiao Hongbin.Analysis on bearing capacity of single pile based on exponential load transfer model[J].Building Structure,2012(7):119-122.
Authors:Zhang Yijing  Xiao Hongbin
Affiliation:(School of Civil Engineering,Hunan University of Technology,Zhuzhou 412007,China)
Abstract:An exponential load transfer model of a pile was suggested based on a model pile test.The suggested model only requires two physically meaningful parameters.Using this equation and acknowledging a hyperbolic relationship between the pile-end bearing capacity and displacement,the differential equations of soil-pile interaction were derived.Such differential equations can be solved analytically to obtain the load-settlement curve that is important in determining the bearing capacity of the pile.The theoretical results are found in a good agreement with the experimental ones.
Keywords:load transfer equation  load-settlement relation  exponential function
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