(华东建筑设计研究院有限公司  上海 200002)
［提要］  建设中的浦东国际机场T2航站楼采用了Y形柱支承的多跨连续张弦梁这一新型的结构体系，为确保该结构的安全、合理、经济，采用模型风洞试验、数值风洞模拟和等效静力风荷载计算等方法确定屋面风荷载分布和大小，进行了考虑材料非线性和几何非线性的弹塑性整体稳定性分析及动力弹塑性时程分析，以研究钢屋盖的整体受力性能。对一些创造性应用的节点，同时进行了足尺试验和有限元分析。研究结果表明，这一新型结构体系在本工程中的运用是合适和成功的。
［关键词］  多跨连续张弦梁  Y形柱  模型风洞试验  数值风洞模拟  等效静力风荷载  整体稳定性分析  动力弹塑性时程分析  理想万向铰接节点
Design and Research on Roof Structure of Pudong International Airport Terminal 2/Wang Dasui，Zhou Jian, Liu Qingyun, Zhang Fulin (East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China)
Abstract:A new system named Y shape columns supported continuous beam string structure is designed for the roof of terminal 2 of Pudong International Airport. To secure the safeness and efficiency of the new system, windtunnel test,numerical simulation of windtunnel and equivalent static wind load calculation are introduced to obtain the accurate wind load distribution. Nonlinear stability analysis and elasticplastic dynamic analysis are used to explore the behavior of the roof structure due to various load combinations. Full scale element tests and FEQ analysis are conducted to study the performances of crucial joints which are used in building structure for the first time. The conclusion is drawn from the research that the use of the new structure system in this project is proper and successful.
Keywords:continuous beam string structure; Yshape columns; windtunnel test; numerical simulation; equivalent static wind load; nonlinear stability analysis; elasticplastic dynamic analysis; ideal spatial hinged joint
*上海市科委资助项目。