中南大学学报（自然科学版）2009，Vol.40Issue(5)：1444-1450,7.
非线性破坏准则下法向受力条形浅锚抗拔力上限计算方法
Calculating method of upper bound for ultimate pullout capacity of vertically loaded strip plate anchors based on nonlinear Mohr-Coulomb failure criterion
摘要
Abstract
Based on the upper bound limit analysis theorem, the associated flow rule and the nonlinear M-C failure criterion, the ultimate pull-out capacity (UPC) of vertically loaded strip plate anchors were studied by means of the kinematical approach of limit analysis theory. The procedures were as follows: the nonlinear shear strength parameters, i.e., internal friction angle φt and cohesive force ct, were treated as variable parameters for the calculation schemes. The objective function of UPC was obtained by equating the work rate of external force to internal dissipation along the velocity discontinuities, and the upper bound solutions were presented by applying a nonlinear sequential quadratic programming (SQP) algorithm. The results show that the nonlinear failure parameter exerts a significant effect on UPC, and if the nonlinear M-C yield criterion turns into a linear M-C yield criterion, the results presented here agree well with the real ones. The density of soil mass, the embedment ratio, the interface properties, the inclined angle and the geometric properties have significant effects on UPC and the region of failure modes.关键词
法向受力条形锚板/极限抗拔力/上限定理/非线性M-C强度准则/关联流动法则/序列二次规划法Key words
vertically loaded strip plate anchors/ ultimate pull-out capacity/ upper bound theorem/ nonlinear M-C failure criterion/ associated flow rule/ sequential quadratic programming分类
建筑与水利引用本文复制引用
赵炼恒,李亮,杨小礼,但汉成,邹金锋..非线性破坏准则下法向受力条形浅锚抗拔力上限计算方法[J].中南大学学报（自然科学版）,2009,40(5):1444-1450,7.基金项目
西部交通建设科技项目(2006318802111) （2006318802111）
中南大学优秀博士学位论文扶植项目(2008yb004) （2008yb004）
铁道部科技研究开发计划重点项目(2008G032–3) （2008G032–3）
湖南省交通厅科技项目(2007–29) （2007–29）
