全装配式钢结构楼板动力性能及舒适度有限元分析
Finite Element Analysis on Dynamic Performances and Comfort Degree of Total-prefabricated Steel Floor Slabs
彭晓彤 1汪薪 1李雁军 1林晨2
作者信息
- 1. 济南大学 土木建筑学院,山东 济南 250022
- 2. 山东工艺美术学院 建筑与景观设计学院,山东 济南 250399
- 折叠
摘要
针对全装配式楼板刚度偏低、舒适度不足的问题,优化设计一种已有的新型全装配式钢结构楼板;基于承载力和自振频率对该楼板的承重结构进行选型,并建立考虑构造体的全装配式钢结构楼板精细化有限元模型,采用有限元方法分析该楼板的动力性能,研究全装配式钢结构楼板特型波纹板厚度、高度和楼板跨度对楼板自振频率及加速度响应的影响.结果表明:优选的全装配式钢结构楼板特型波纹板具有较大承载力并可以满足楼板自振频率要求;增大全装配式钢结构楼板特型波纹板厚度、高度,减小楼板跨度,可以增大楼板的自振频率,减小峰值加速度,有效改善楼板的舒适度;全装配式钢结构楼板特型波纹板厚度宜选为1.5 mm,并得到常用全装配式钢结构楼板特型波纹板高度的适用楼板跨度范围.
Abstract
Aiming at the problems of low stiffness and insufficient comfort of total-prefabricated floor slabs,a new type of existing total-prefabricated steel floor slab was optimized and designed.On the basis of bearing capacity and natural fre-quency,load-bearing structure of the floor slab was selected,and a refined finite element model of total-prefabricated steel floor slabs considering the structure was established.Finite element analysis on dynamic performances of the floor slab was carried out to research influences of special corrugated plate thickness and height of total-prefabricated steel floor slabs and floor slab span on floor slab natural frequency and acceleration response.The results show that the optimized special corrugated plate bearing capacity of total-prefabricated steel floor slabs is large and can satisfy requirements of floor slab natural frequency.Increasing special corrugated plate thickness and height of total-prefabricated steel floor slabs and reducing floor slab span can increase floor slab natural frequency,reduce peak acceleration,and effectively improve floor slab comfort degree.The special corrugated plate thickness of total-prefabricated steel floor slabs should be selected as 1.5 mm,and applicable floor span ranges of special corrugated plate height of total-prefabricated steel floor slabs commonly used are obtained.
关键词
钢结构/动力性能/有限元分析/全装配式钢结构楼板/自振频率/峰值加速度/舒适度Key words
steel structure/dynamic performance/finite element analysis/total-prefabricated steel floor slab/natural frequency/peak acceleration/comfort degree引用本文复制引用
基金项目
山东省自然科学基金项目(ZR2019MEE009)
出版年
2024
NETL
NSTL
万方数据