建筑钢结构进展2018，Vol.20Issue(3)：1-10,10.DOI:10.13969/j.cnki.cn31-1893.2018.03.001
大宽厚比矩形钢管混凝土柱纵向加劲肋构造研究现状
Research on the Longitudinal Stiffener of Rectangle Concrete Filled Steel Columns with Large Width to Thickness Ratio
摘要
Abstract
Large scale rectangle concrete-filled steel columns have high load capacity.The limitation on the ratio of width to thickness of panels is applied to prevent local bulking in many design standards.Adding longitudinal stiffeners to the inner face of panels has been proven a useful method to enhance the local bulking performance of components,so the high strength steel can be fully utilized.In this paper,theoretical study is firstly conducted on the local buckling for panels.The limitations on ratio specified in design standards are compared,and the impacts are emphasized about the stiffener on critical local buckling stress.Then current experimental and theoretical studies are summarized about the effect of longitudinal stiffeners on the static load,seismic behavior and requirements of sub-panels.Based on the above studies,the paper proposes a new load capacity calculation method and a new design principle of stiffener section or multi-longitudinal stiffeners for postponing local buckling of panels.In the end,a recommendation is provided on the interactive mechanism between stiffeners,panels and concrete.关键词
钢管混凝土柱/局部屈曲/纵向加劲肋/大宽厚比/抗弯刚度Key words
concrete-filled steel column/local buckling/longitudinal stiffener/large width-thickness ratio/bending stiffness分类
建筑与水利引用本文复制引用
刘源,罗金辉,李元齐,傅学怡..大宽厚比矩形钢管混凝土柱纵向加劲肋构造研究现状[J].建筑钢结构进展,2018,20(3):1-10,10.基金项目
国家自然科学基金(51208375) （51208375）
