(辽宁工程技术大学力学与工程学院， 阜新 123000)

［摘要］提出了一种利用数值模拟和完整指数函数模型求解单桩基础极限承载力的算法。利用ANSYS计算不同桩顶轴压荷载作用下的桩顶沉降并得到P-S曲线，利用MATLAB完整指数函数模型拟合P-S曲线，并得出单桩的极限承载力。与太沙基公式计算结果、ANSYS计算的P-S曲线的沉降40mm对应的极限承载力相比较可知，提出的算法是合理和易于应用的。

［关键词］数值模拟; P-S曲线; 单桩极限承载力

中图分类号： TU473.1+1 文献标识码： A文章编号：  1002-848X(2016)S1-0799-04

Determination of single pile ultimate bearing capacity with numerical simulation

 and integrated exponential function model

Niu Wenjie, Liu Mang

(College of Mechanics and Engineering Department, Liaoning Technical University, Fuxin 123000, China)

Abstract: A new algorithm was proposed to determine single pile ultimate bearing capacity with numerical simulation and integrated exponential function model. The pile head settlement under different vertical compressive load P on the head was got with ANSYS software, and P-S curve was plotted. With integrated exponential function model and MATLAB software, single pile ultimate bearing capacity was determined. It was compared with the result from Terzaghi′s equation, and result from the P-S curve where ultimate bearing capacity is the P value corresponding to pile head settlement of 40mm. Comparison indicates the proposed new algorithm is acceptable and applicable.

Keywords: numerical simulation; P-S curve; single pile ultimate bearing capacity

作者简介： 牛文杰，博士，副教授，Email：nwj1982@sohu.com。

*辽宁工程技术大学博士科研启动基金(11-415)。