条形板抗拔承载力塑性极限分析

从土塑性力学极限分析上限定理出发，建立了条形锚板上拔时条分式平移破坏机构。根据外部作用荷载和土体自重所做的外功率与塑性变形区的内部能量耗损率相等的条件，建立起虚功率方程，并由此得到了抗拔极限承载力计算公式，该公式概念清楚，使用方便。分析了承载力系数，表明黏聚力项受强度的响应系数m值影响较大，而重力项和超载项受其影响很小。通过与前人的试验资料和Meyerhof-Adams计算理论得出的结果进行比较，表明了建议方法的可靠性，对土体抗拔问题具有一定的实用意义。对比的结果同时也验证了强度响应系数m只对抗拔承载力的黏聚力部分产生明显影响的结论。

Plastic limit analysis of vertical uplift capacity of strip plates

Based on the logarithmic spiral failure surface and combined with the upper bound theorem of soil plasticity mechanics,a technique of slice for analyzing translational failure mechanism of the stability problem of strip foundations subjected to uplift loads was proposed.According to the term that the rate of work done by external loads and soil weight is equal to the rate of energy dissipation in the kinematically admissible velocity field,the virtual work rate equation was deduced,through which the vertica...