水闸桩土复合地基承载力与桩土置换率关系  

Relationship between pile-soil composite foundation bearing capacity and replacement rate of sluice

作　　者：张戈[1] 张劲松[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2013年第3期328-333,共6页Engineering Journal of Wuhan University

摘　　要：以有限单元法为理论基础,研究了水闸桩土复合地基承载力与桩土置换率之间的关系.应用ANSYS有限元计算软件建立了不同桩土置换率下的桩土联合承载数值模型,计算桩土联合承载时不同置换率下的桩土联合承载力.根据数值模拟计算结果建立桩土联合承载力与置换率之间的关系曲线,分析两者之间的变化规律,并分别进行线性拟合、指数拟合和多项式拟合,得到相应的拟合公式及拟合精度,以便在实际工程中利用这些关系式预估所需的置换率及相应的地基承载力,为以后桩土复合地基模拟及设计提供重要的参考价值.Based on the finite element method as the theoretical basis,this thesis has studied the relationship between pile-soil composite foundation bearing capacity and pile-soil replacement rate of sluice.The pile-soil combined bearing numerical models with different pile-soil replacement rate are established to calculate the bearing capacity under different pile-soil replacement rates during the process of combining bearing with ANSYS.Based on the numerical results,this paper has established the curve of the bearing capacity and the pile-soil replacement rate,analyzed the regular variation pattern and conducted linear fitting,exponential fitting and polynomial fitting respectively to obtain corresponding fitting formulas and fitting accuracies;so that in some actual project the designer can accord the replacement rate to estimate the bearing capacity in the real project.In the same time,great reference value is also provided for the later pile-soil composite foundation’s simulation and design.

关 键 词：桩土联合承载 置换率 ANSYS数值模拟 承载力 

分 类 号：TU472.36[建筑科学—结构工程]