摘要
系统地介绍了结构塑性极限分析的原理和方法。借助有限单元法和线性规划,运用塑性极限分析的上限法可求解土坡的极限承载力和安全系数,同时分析了该法的困难所在。以一经典土坡的稳定性作为算例,讨论了屈服条件近似对精度的影响和边坡土体容重对极限荷载的影响,论证了本方法的正确性。算例表明该方法具有较高的精度。
The theory and method of the plastic limit analysis are introduced systematically. By using the finite element method and linear program, the upper limit method can evaluate the bearing capacity and the safety factor of soil slope. The influence of yield surface linearization on the degree of accuracy and the influence of slope soil density on the limit load are discussed. A classical slope calculation case show that the presented method is of correctness and high precision.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第11期1867-1873,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
土力学
线性规划
塑性极限分析
上限法
安全系数
Bearing capacity
Finite element method
Linear programming
Safety factor
Slope stability
