滩海桶形基础破坏机制及极限承载力分析研究  

Failure mechanism and ultimate bearing capacity of bucket foundation in shallow water

作　　者：武科[1] 栾茂田[1] 范庆来[2] 王志云[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室 [2]鲁东大学土木工程学院,山东烟台264025

出　　处：《岩土工程学报》2008年第3期394-398,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金资助项目(50579006,50179006);国家自然科学基金重点资助项目(50439010);教育部科学技术研究项目重大项目(305003);教育部跨世纪优秀人才培养计划研究基金资助项目(教技函[1999]2)

摘　　要：针对饱和软黏土地基上桶形基础结构,基于弹塑性极限分析中的上限法,建立了一种竖向荷载作用下桶形基础的极限分析模型。采用有限元数值分析解验证了所提出极限分析模型的可行性和有效性,进而,据此进行了一系列变动参数比较计算,以此对大量的计算结果进行了系统的分析,所得到的数值计算结果与分析结论为工程设计提供参考依据。Based on the upper-bound limit analysis of plasticity,a new combined 3-dimensional failure mechanism of bucket foundation in undrained soft clay against vertical load was established,and the limit analysis model of bucket foundation subjected to vertical load was proposed.It was verified by a comparative study with finite element solutions by use of finite element analysis software ABAQUS.For bucket foundation,a number of parametric computations were conducted.The numerical results computed by the proposed method would be helpful in engineering practices.

关 键 词：桶形基础 极限分析 破坏机制 上限法 有限元法 

分 类 号：TU411[建筑科学—岩土工程]