铁道科学与工程学报2017，Vol.14Issue(6)：1166-1173,8.
三维圆形浅埋锚板极限抗拔力非线性上限解析
Study on the ultimate pullout capacity of 3-D shallow circle plate anchors
摘要
Abstract
Based on the nonlinear M-C failure criterion, the ultimate pull-out capacity of shallow circle anchors was studied by means of the kinematical approach of limit analysis theory. A knematically admissible failure mechanism was considered and the nonlinear shear strength parameters (internal friction angleφt and cohesive forcect) were treated as variable parameters. The objective functions of the ultimate pull-out capacity were obtained by equating the work rate of external forces to internal dissipation along the velocity discontinuity plane. At last, the upper bound solutions for the objective functions were presented by applying a nonlinear sequential quadratic programming algorithm. The numerical results show that if the nonlinear M-C yield criterion turns into a linear M-C yield criterion, the solutions presented in this paper compare reasonably well with the results presented in the existing literatures. Nonlinear failure parameter has a significant effect on the ultimate pull-out capacityand the failure region, and there exists a dependency correlation between the failure mechanism bound and the ultimate pull-out capacity.关键词
圆形浅埋锚板/极限抗拔力/破坏范围/非线性M-C强度准则/切线法/极限分析上限定理/序列二次规划法Key words
shallow circle anchor plates/ultimate pull-out capacity/failure mechanism/nonlinear M-C failure criterion/tangent technique/limit analysis upper bound theorem/sequential quadratic programming分类
建筑与水利引用本文复制引用
谭亦高,左仕,胡世红,杨新平..三维圆形浅埋锚板极限抗拔力非线性上限解析[J].铁道科学与工程学报,2017,14(6):1166-1173,8.基金项目
国家自然科学基金资助项目(51478477) （51478477）
