摘要
在方钢管混凝土偏压柱试验研究的基础上,提出核心混凝土的三维应力-应变关系模型,构造了非线性三维虚拟层合单元,并且利用此法对方钢管混凝土偏压柱的非线性屈曲承载力进行了有限元分析,计算结果与试验结果符合良好。
On the basis of the experimental research on the concrete - filled square steel tubular column under eccentric load, which the three - dimensional stress - strain relationhip model of core concrete is put forward, and the three - dimensional virtual laminated element has been established. By the method, the nonlinear buckling load bearing capacity of concrete - filled square steel tubular column under eccentric load is analyzed by the finite element method. The calculated results conformed well to the tested results.
出处
《土木工程学报》
EI
CSCD
北大核心
2003年第12期31-38,共8页
China Civil Engineering Journal
关键词
非线性的三维虚拟层合单元法
非线性屈曲承载力
方钢管混凝土偏压柱
nonlinear three - dimensional virtual laminated element, nonlinear buckling load bearing capacity, concrete - filled square steel tubular column under eccentric load
