摘要
为便于工程简化计算,将混凝土楼板和下空腹钢结构梁运用刚度等效原则简化为钢结构梁,利用有限元方法分析了正六边形蜂窝型空腹夹层板楼盖和刚度等效钢结构楼盖在竖向荷载作用下的静力特性,通过对比分析,研究了不同混凝土楼板参与宽度的竖向挠度,计算出钢-混凝土组合结构混凝土楼板的有效宽度,并分析得出的混凝土板有效结构宽度与混凝土板厚度和钢-混凝土组合结构厚度间的关系。研究结果表明:正六边形蜂窝型空腹夹层板楼盖结构的抗弯刚度随剪力键高度的增加而加大,上翼缘混凝土板有效结构宽度随剪力键长细比的增加而减小;混凝土板有效结构宽度随自身板厚的增加而增加,近似为线性增长。
In view of a simplified calculation of the project,the concrete floor slabs and the lower to be vierendeel steel structure beams are simplified to the steel structure beam by using the stiffness equivalent principle,followed by an analysis of the static characteristics of hexagonal honeycomb vierendeel sandwich plate floors and stiffness equivalent steel structure floor under vertical loading with the finite element method adopted.Based on a comparative analysis,the vertical deflection of different concrete floor width has been studied,with a calculation of the effective width of concrete floor of steel-concrete composite structure,as well as an analysis of the relationship between the effective structural width of concrete slabs and the thickness of concrete slab and steel-concrete composite structure.The results show that the flexural stiffness of the hexagonal honeycomb vierendeel sandwich slab floor structure increases positively with the height of the shear key,while the effective width of the upper flange concrete slab decreases with the increase of the slenderness ratio of the shear key;meanwhile,the effective structural width of concrete slab increases positively with that of slab thickness,which shows an approximately linear growth trend.
作者
何嘉沛
杨晓华
何嘉杰
彭斯宁
HE Jiapei;YANG Xiaohua;HE Jiajie;PENG Sining(College of Civiling Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)
出处
《湖南工业大学学报》
2022年第4期1-7,共7页
Journal of Hunan University of Technology
基金
湖南省自然科学基金资助项目(2020JJ6081)。
关键词
有限元分析
蜂窝空腹夹层板楼盖
有效宽度
刚度等效
finite element analysis
honeycomb vierendeel sandwich plate floor
effective width
equivalent stiffness
