湖南大学学报（自然科学版）Issue(1)：110-116,7.
临坡双层粘土地基极限承载力的上限分析
Upper Bound Solution for Ultimate Bearing Capacity of the Two-layer Clay Foundation Adjacent to Slope
摘要
Abstract
Combined with the characteristics of the asymmetry failure mode of the two-layer clay foun-dation near slope and layered properties,the unilateral sliding failure mode of two-layer foundation under strip footing adjacent to slope was built on the basis of the existing relevant researches.The failure mecha-nism was formed by many sliders.According to speed compatible relationships and triangle closed condi-tion,the corresponding planar kinematically admissible velocity field was constructed.By introducing the upper limit analysis theory,the ultimate bearing capacity calculation model of strip footings over two-layer foundation soil was derived.A new approach for determining the ultimate bearing capacity of two-layer foundation under strip footing adjacent to slope was put forward by using sequential quadratic program-ming optimization algorithm.By the use of Matlab symbolic operation function and optimization function, the finite element numerical analysis results were analyzed and compared with programmed calculation. The feasibility and rationality of the proposed approach was shown.关键词
临坡地基/双层粘土地基/上限分析/条形基础/极限承载能力Key words
ground foundation adjacent to slope/two-layer soils/upper limit analysis/strip footing/ultimate bearing capacity分类
交通工程引用本文复制引用
胡卫东,曹文贵,袁青松..临坡双层粘土地基极限承载力的上限分析[J].湖南大学学报（自然科学版）,2016,(1):110-116,7.基金项目
国家自然科学基金资助项目（51378198），National Natural Science Foundation of China（51378198）；高等学校博士学科点专项科研基金资助项目 （）
