Undrained Bearing Capacity of Square and Rectangular Footings
Undrained Bearing Capacity of Square and Rectangular Footings
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DOI：
10.1061/(asce)1532-3641(2006)6:3(147
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发表时间：
2006-05
影响因子：
3.7
通讯作者：
S. Gourvenec;M. Randolph;Oliver Kingsnorth
中科院分区：
文献类型：
--
作者：
S. Gourvenec;M. Randolph;Oliver Kingsnorth
采用有限元分析方法，采用Tresca和von Mises土模型，研究了均质不排水粘土上方形和矩形基础的单轴竖向承载力。结果进行了比较，从传统的承载力理论和可用的分析和数值解的预测。通过校准有限元结果对已知的精确解，最佳估计粗糙的矩形基脚的承载力，与形状因子拟合的一个简单的二次函数的基脚纵横比。对于方形基脚，承载力比基于Skempton形状系数1.2的承载力低约5%。
The uniaxial vertical bearing capacity of square and rectangular footings resting on homogeneous undrained clay is investigated with finite element analyses, using both Tresca and von Mises soil models. Results are compared with predictions from conventional bearing capacity theory and available analytical and numerical solutions. By calibrating the finite element results against known exact solutions, best estimates of bearing capacity for rough-based rectangular footings are derived, with the shape factor fitted by a simple quadratic function of the footing aspect ratio. For a square footing, the bearing capacity is approximately 5% lower than that based on Skempton’s shape factor of 1.2.