摘要
利用三维非线性有限元方法编制的计算机程序,对试验结果进行了分析、比较,并探讨了方钢管混凝土截面受力机理和破坏机制.对截面尺寸和材料强度在较大范围内变化的方钢管混凝土短柱进行了模拟试验,通过参数分析、回归得到方钢管混凝土短柱的承载力计算公式.
The companion paper has presented the experimental results of concrete-filled rectangular tubular (CFRT) short columns under concentric loading and investigated the main factors which affected the behavior of CFRT columns. This paper presents the development of a 3D nonlinear F. E. analysis computer program whose accuracy is verified by comparing the analysis results to data from tests of Tomii and the authors, and the load-carrying and failure mechanism of CFST cross section are investigated. A capacity formulation of CFRT short columns having a wide range of cross-section dimensions and material strengths is proposed based on experiment simulation, parameter analysis and regression analysis.
出处
《建筑结构》
CSCD
北大核心
2000年第2期43-46,共4页
Building Structure
基金
同济大学与日本藤田公司合作研究项目
关键词
方钢管混凝土
三维非线性分析
承载力公式
短柱
concrete-filled rectangular steel tube
3D nonlinear analysis
capacity formulation
