某天幕钢结构分析与设计  

Analysis and Design of a Canopy Steel Structure

作　　者：杨坤 张汉龙 YANG Kun;ZHANG Hanlong(Guangzhou Pearl River Foreign Investment Architectural Designing Institute Co.,Ltd.Guangzhou 510060,China)

机构地区：[1]广州珠江外资建筑设计院有限公司,广州510060

出　　处：《广东土木与建筑》2022年第1期39-42,共4页Guangdong Architecture Civil Engineering

摘　　要：珠海某项目天幕由5个不同尺寸的椭圆顶棚连接组成,视觉效果要求简洁美观,天幕钢柱支承于主体钢筋混凝土结构1-4层,空间体型复杂。为满足建筑的外观造型需求,宜采用构件较为“纤细”,整体结构较为“轻巧”的钢结构形式。重点对天幕结构选型的合理性、结构变形以及承载力情况进行了研究讨论,分别采用不带主体结构的单独模型和带主体结构的组装模型进行计算并取两者的包络值进行设计。计算结果表明,各项指标均表现良好,说明结构选型合理且具有足够的承载力。另外,天幕钢柱脚与主体结构采用铰接连接的方式,有效减弱了柱脚位置的约束,释放了转动刚度,从而减少了柱脚处的内力达到优化构件截面的效果。The ceiling of a project in Zhuhai is composed of five elliptical ceilings of different sizes.The visual effect is required to be simple and beautiful.The steel columns of the ceiling are supported on floors 1-4 of the main reinforced concrete structure,and the space shape is complex.In order to meet the appearance modeling requirements of the building,the steel structure with“thin”components and“light”overall structure should be adopted.Focuses on the rationality of the selection of sky curtain structure,structural deformation and bearing capacity.The separate model without main structure and the assembly model with main structure are used for calculation,and their envelope values are taken for design.The calculation results show that each index performs well,indicating that the structure selection is rea‐sonable and has sufficient bearing capacity.In addition,the hinged connection between the steel column base of the sky curtain and the main structure effectively weakens the constraint of the column base position and releases the rotational stiffness,so as to reduce the internal force at the column base and optimize the member section。

关 键 词：钢结构天幕 动力特性 变形验算 节点设计 

分 类 号：TU391[建筑科学—结构工程]