摘要
对于大型摄影棚结构,地震作用下的结构顶部水平位移控制是设计的关键。和周边框架相比,屋盖网架或桁架结构平面内刚度相对较弱,不足够协调地震作用下摄影棚整体变形。本文研究了不同屋盖结构形式和桁架结构在不同水平支撑情况下的结构顶部各点水平位移,研究表明桁架+薄混凝土屋面板、桁架+满布上弦支撑的结构形式可有效提升屋盖平面内刚度,使结构顶部最大位移明显减少,各点位移差减小,结构形式安全可靠,经济可行。
For large-scale studio structures,structural top horizontal displacement control under seismic action is the key to design.Compared with the surrounding frame,the in-plane roof stiffness of the space truss or truss structure is relatively weak,which is not enough to coordinate the overall deformation of the studio under seismic action.In this paper,the horizontal displacements of different roof structures and truss structures at different horizontal strut are studied.The research shows that the truss with thin concrete roof plate,truss with full top chord strut can effectively improve the in-plane roof stiffness,which results in a significant reduction of the maximum top displacement of the structure,and decreases the displacement difference at each point,this type of structure is safe,reliable and economically feasible.
作者
魏军
李亚鹏
邱意坤
裘建东
Wei Jun;Li Yapeng;Qiu Yikun;Qiu Jiandong(Radio,Film&TV Design and Research Institute,Beijing 100045,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)
出处
《建筑结构》
CSCD
北大核心
2019年第S02期317-321,共5页
Building Structure
