框架—片筏—地基共同作用的三维有限元分析研究  

On Three Dimensional Finite Element Calculations Concerning Coupling Interaction Between Frame Structure,Raft Foundation and Soil Mass

作　　者：杨雪强[1] 吴子超 杨宗轲 

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006 [2]广东省建筑机械施工有限公司,广东广州510075 [3]广东核力工程勘察院,广东广州510800

出　　处：《广东工业大学学报》2010年第4期9-15,共7页Journal of Guangdong University of Technology

基　　金：广东省教育厅科研基金项目(2008278)

摘　　要：借助ANSYS有限元程序,结合基础筏板特点,选取土体不同的本构模型,对框架、片筏和地基的相互作用进行了三维有限元数值计算模拟研究,揭示了三者相互耦合作用的机理.研究结果表明,由于D-P5和D-P6两个模型能很好地考虑中间主应力对材料强度的贡献,因此能给出更为切合实际的上下部耦合作用的三维有限元计算结果.Three-dimensional finite element calculations concerning coupling interaction between frame structure,thick raft foundation and soil mass were done in detail by using ANSYS code,sensitivities of different soil mass constitutive models for the coupling interaction were tested by using the three-dimensional finite element calculation results,and some mechanisms of the coupling interaction were disclosed as well.Research results show that D-P5 and D-P6,the two constitutive models,which contain intermediate principal stress contribution to soil mass failure strength,provide more reasonable predicting results about the coupling interaction between frame structure,thick raft foundation and soil mass.

关 键 词：框架结构 片筏基础 耦合作用 屈服准则 有限元计算 

分 类 号：TU470.3[建筑科学—结构工程]