摘要
基于滑面有限元应力分析的土坡稳定分析方法的关键在于滑面上应力的计算,而已有方法的共同点是滑面上点的应力是在其所处的单元内插值得到,从而引起滑面上应力的不连续．基于此提出了一种基于滑面应力优化的土坡稳定分析方法,即对滑面一定区域内的应力进行光滑,通过该区域的滑面上点的应力由外推得到,从而得到较光滑的应力分布,安全系数的计算结果更符合实际．
The key of the stability method, based on slip FE stress, is stress calculation of a slip. Traditionally, stress on slips is obtained by interpolating an element to induce stress discontinuance. A soil slope stability analysis based on stress optimization of a slip is put forward. The stress around the slip is smoothed in the sub-area and the stress on the slip is obtained by extrapolation. Thus the stress on the slip is smooth and the safety factor is of more practical purpose.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第3期27-30,共4页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金资助项目(40502016).
关键词
有限元
稳定分析
土坡
应力优化
finite element method
stability analysis
soil slope
stress optimization
