不排水黏土中深埋锚板的抗拔承载力  

Pullout capacity of deeply embedded plate anchors in undrained clay

作　　者：王立忠[1] 舒恒[1] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310027

出　　处：《岩土工程学报》2009年第6期829-836,共8页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(50779061)

摘　　要：针对不排水均质黏土中深埋条形锚板和圆形锚板,分别构造两种简单的机动容许速度场,利用塑性力学极限分析的上限法求解锚板的极限抗拔承载力。采用非线性有限元方法对构造的速度场和承载力计算结果进行了验证。与现有的相关解答对比可知:本文上限解与已有的上限解或滑移线场解答较吻合。提出的速度场合理、简单,并严格符合机动容许场的要求,便于实际应用,能为工程设计提供参考依据。Two new simple and rigorous kinematically admissible velocity fields are constructed for deeply embedded horizontal strip and circular plate anchors respectively. Based on the velocity fields, by use of the upper theorem of plasticity, the limit pullout capacities of the strip and circular plate anchors in undrained clay are evaluated. Both the velocity fields and capacities are verified by a comparative study with the finite element solutions, which show good consistence. Besides, comparison of capacities in the present paper with the existing bounds and stress characteristic solutions shows good agreement.

关 键 词：锚板 黏土 抗拔承载力 极限分析 有限元法 

分 类 号：TU476[建筑科学—结构工程]