(1 北京交通大學土木建筑工程學院，北京100044；2 中廣電廣播電影電視設計研究院， 北京 100045)

［摘要］對于大型攝影棚結構，合理考慮屋蓋結構和支承結構協同作用是結構設計的關鍵。以某大型攝影棚結構為研究對象，利用SAP2000軟件建立了屋蓋網架固定鉸支座模型、等效彈性支座模型和整體結構模型，并對其進行了靜動力對比分析，討論了下部支承結構對上部屋蓋網架受力的影響。分析結果表明，固定鉸支座模型與整體結構模型的應力差值較大，將下部支承結構簡化后的等效彈性支座模型在靜載和單獨豎向地震作用時可代替整體結構模型進行分析，考慮水平向地震作用和三維地震作用時應采用整體結構模型。 

［關鍵詞］大型攝影棚；網架；固定鉸支座；等效彈性支座；協同分析 

中圖分類號：TU398-9 文獻標識碼：A文章編號：1002-848X(2021)24-0071-07

Cooperative work analysis of roof grid and supporting frame in large-scale studio 

ZHOU  Changdong1,  LI  Yapeng1,  QIU  Yikun1,  A Siha1,  QIU  Jiandong2 

(1 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044， China；2 Radio, Film and Television Design and Research Institute, Beijing 100045， China) 

Abstract: For large-scale studio structures, reasonable consideration of the cooperative interaction between roof structure and support structure is the key point for structural design. Take a large-scale studio structure as the research object, the fixed hinge support model of space truss roof, the equivalent elastic support model and the overall structure model were established through SAP2000. The static and dynamic comparative analyses for different models were carried out, the influence of the lower support structure on the mechanical behavior of the upper space truss roof was discussed. The analysis results indicate that there is a great difference of stress between fixed hinge support model and overall structure model. Under the static loading and single vertical seismic action, the simplified equivalent elastic support model of the lower support structure can replace the overall structure model for analysis. While considering the horizontal seismic action and the three-dimensional seismic action, the overall structure model should be selected. 

Keywords:large-scale studio； space truss； fixed hinge support； equivalent elastic support； cooperative analysis

*國家自然科學基金面上項目（52078030，51678039）。

 作者簡介：周長東，博士，教授，博士生導師，Email: zhouchangdong@163.com。