Nonlinear regression model for peak-failure strength of rockfill materials in general stress space
作者： Yang Xiao , Minqiang Meng , Hui Chen , Xiang He , Jinyu Ran
DOI: 10.1016/J.GSF.2017.07.001
关键词: Nonlinear regression 、 Stress (mechanics) 、 Geotechnical engineering 、 Stress space 、 Stress ratio 、 Function (mathematics) 、 Overburden pressure 、 Mechanics 、 Exponent 、 Mathematics 、 Stress path
摘要: A nonlinear regression model for peak-failure strength prediction of rockfill materials is proposed. It based on the relationship between stress ratio and normalized confining pressure as well exponent function intermediate principal ratio. This can predict variations with initial different under general paths. Comparisons measured predicted results show that constant-p′ constant-b path larger than constant-σ3′ path. The predictive capacity proposed better friction angle.
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