摘要
大跨度三向网格混凝土盒式结构是一种新型空腹夹层板盒式结构。文章采用有限元法对边长为15 m的正六边形三向网格钢筋混凝土盒式结构楼盖进行动力特性研究,详细分析了高跨比、肋高度、肋宽度、密柱尺寸和表层薄板厚度等参数对结构基频的影响。分析结果表明:增大高跨比和肋高度能显著提高基频,肋宽度及密柱尺寸对基频影响有限,表层薄板厚度可根据构造取值。
Large-span three-way grid concrete box structure is a new type of open-web sandwich plate box structure.In this paper,the finite element method is used to study the dynamic characteristics of the hexagonal three-way grid reinforced concrete box structure floor with a side length of 15 m.The influence of the parameters such as height-span ratio,rib height,rib width,dense column size and surface plate thickness on the fundamental frequency of the structure is analyzed in detail.The analysis results show that increasing the height-span ratio and rib height can significantly increase the fundamental frequency.The influence of rib width and dense column size on the fundamental frequency is limited,and the thickness of the surface plate can be determined according to the structure.
作者
黄建华
HUANG Jianhua(China Railway 11th Bureau Group Construction and Installation Engineering Co.,Ltd.,Wuhan 430064,Hubei,China)
出处
《工程技术研究》
2022年第24期7-10,共4页
Engineering and Technological Research
关键词
三向网格混凝土盒式结构
大跨度
有限元法
参数化分析
基频
three-way grid concrete box structure
largespan
finite element method
parametric analysis
fundamental frequency
