建筑结构学报2013，Vol.34Issue(4)：135-143,9.
冷弯薄壁型钢-混凝土组合楼盖受弯承载力影响因素分析
Influencing factors analysis on flexural capacity of cold-formed steel joists concrete composite floor
摘要
Abstract
Using nonlinear finite element analysis method with ANSYS, and changing the spacing among the screws connecting the profiled steel sheet and the steel joists, yield strength of steel, strength of concrete, thickness of C type steel joists, thickness of concrete slab, types of profiled steel sheet, space between steel joists, width of floor, span-depth ratio of steel joists and height to thickness ratio of the web, the flexural capacity and the ductility of composite floor were researched. The research shows, the effects of the spacing among the screws connecting the profiled steel sheet and the steel joists, yield strength of steel, thickness of C type steel joists, types of profiled steel sheet, spacing between steel joists, width of floor, span-depth ratio of steel joists, height to thickness ratio of the web on the flexual capacity of composite floor are remarkable. The strength of concrete has little influence. The flexural capacity of composite floor increases linearly as the thickness of concrete slab changs from 50 mm to 100 mm, and no further improvement can be obtained when the concrete slab is thicker than 100 mm. The strength of concrete, spacing between steel joists and width of floor have little influence on the ductility of composite floor. T-shaped section composite beam model can be used as the simplified calculation model of the composite floor.关键词
组合楼盖/冷弯薄壁型钢梁/非线性有限元分析/受弯承载力/延性/影响因素/组合梁Key words
composite floor/ cold-formed steel joists/ nonlinear finite element analysis/ flexural capacity/ ductility/ influencing factors/ composite beam分类
建筑与水利引用本文复制引用
贾子文,周绪红,刘永健..冷弯薄壁型钢-混凝土组合楼盖受弯承载力影响因素分析[J].建筑结构学报,2013,34(4):135-143,9.基金项目
国家自然科学基金项目(50578013). （50578013）
