（同济大学建筑设计研究院 上海 200092）
［提要］为了能准确地了解东莞大剧院结构设计中钢筋混凝土主体结构与扇形大跨钢结构体系之间的相互影响程度，利用ETABS软件分别建立了4个计算模型用等效荷载和等效进行分析研究。研究表明钢屋盖对主体结构的影响可按等代刚度的方法计算。在静力计算时屋盖可单独建模，动力分析时须考虑与主体结构的相互影响。
结论对工程设计具有一定的指导意义。
［关键词］结构分析 复杂结构 相互影响
Analysis and Research of Steel concrete Hybrid  Structure of Dongguan Theater/Lu Xiuli,Zhang Tao,Ding Jiemin(The Architecture Design and Research Institute of Tongji University,Shanghai 200092,China)
Abstract:In order to study the influence between the RC mainbody structure and the steel roof structure in the structure design of Dongguan theater,  four ETABS models are built.
The analysis results indicates that the effect of roof can use quivalent louds and stiffness method for main body structure analysis.The dynamic behaviour of the roof structure is necessary to consider action of the main body.The conclusions  can direct the design of project.
Keywords:structure analysis; complex structure; mutual affection