摘要
针对装配式空腔楼板横向连接弱、整体性不强的缺点,提出了一种带有剪力键连接的新型装配式密肋空腔楼板体系。该体系通过在预制空腔板间合理设置抗剪连接键来加强板与板之间的横向联系,从而增强楼板的横向协同工作能力,形成整体工作性能良好的空腔楼板。对该板进行了足尺的静力加载试验和有限元分析,结果表明:剪力键对相邻板的变形起到一定的约束作用,楼板双向受力性能明显。楼板承载能力强、变形小,卸载后残余变形小,板的整体受力性能良好。有限元分析结果与试验结果基本一致,也反映了该板整体工作的特性。既有工业化装配式生产的优势,又有良好的工作性能使得该板具有重要的工程应用价值。
Aiming at the shortages of weak transverse connection and weak integrity of fabricated cavity floor,a new type of fabricated cavity floor system with shear key connections is proposed.In this system,the shear connection key is reasonably set between the precast hollow slabs to strengthen the transverse connection between the slabs,so as to enhance the transverse cooperative working ability of the slabs and form a hollow plate with good integrity working performance.The full-scale static loading test and finite element analysis on the slab are carried out.The results show that the shear key has a restraint effect on the deformation of the adjacent slab,and the two-way stress performance of the slab is obvious.The slab has strong bearing capacity,small deformation,small residual deformation after unloading,and good integrity mechanical performance.The finite element analysis results are basically consistent with the test results,which also reflects the integrity working characteristics of the plate.Both have the advantages of industrial assembly production and good working performance make the slab have important engineering application values.
作者
李书进
刘川琦
丁注秋
张远进
傅礼铭
LI Shujin;LIU Chuanqi;DING Zhuqiu;ZHANG Yuanjin;FU Liming(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;School of Safety Science and Emergency Management,Wuhan University of Technology,Wuhan 430070,China;Hubei Synthetic Space Building Technology Co.,Ltd.,Wuhan 430070,China)
出处
《混凝土》
CAS
北大核心
2022年第11期142-146,共5页
Concrete
基金
国家自然科学基金(51678464)。
关键词
装配式建筑
空腔楼板
剪力键
试验研究
有限元分析
assembled structure
hollow floor
shear key
experimental study
finite element analysis
