广东科学中心大跨巨型钢框架结构设计
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（1 中南建筑设计院股份有限公司，武汉 430071； 2 广州大学土木工程学院，广州 510006）［摘要］广东科学中心船形常设展厅连续三层均为双向45m左右柱距的多层大跨结构，且“船头”外挑达45m左右。工程结构选型结合建筑造型，将楼、电梯间及设备间做成六根格构式钢巨型柱；将层2与层3楼盖结构沿纵向两侧连为一体，构成纵向跨层桁架，将双向大跨楼盖结构转变为单向大跨楼盖结构，实现了多层室内无柱大空间及“船头”大悬挑，并取得了较好的经济指标；同时，格构式巨型柱与桁架构成了格构式巨型钢框架结构，形成了有效的抗侧力体系。介绍了该工程大跨巨型钢框架结构的结构选型、布置、节点设计及结构分析。［关键词］广东科学中心；巨型结构；大跨；钢框架；节点设计；节点试验Structural design of the steel mega-structure for Guangdong Science CenterLi Ting1, Li Hongsheng1, Yin You1, Sun Zhaomin1, Zhang Jichao2(1 Central-south Architectural Design Institute Co., Ltd., Wuhan 430071, China;2 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)Abstract:The fleet-like exhibition halls of Guangdong Science Center are multi-storey long-span structures with a 45m column spacing in both horizontal directions, and these halls contain an overhang span of 45m. Considering requirements of architectural shape, structures of staircase, elevator and equipment rooms are designed as six latticed mega-steel columns, longitudinal cross-layer trusses are constructed along the two sides of the structure between the second and third floor, the cross-layer trusses changed the two-way span floor structure to a one-way span floor structure, the each-storey large space and long cantilever are achieved, and low cost is realized. Latticed mega-steel columns and trusses composed the latticed mega-frame structure to effectively resist lateral forces. The structural scheme selection, layout, joint design and structural analysis of this mega-structure are presented.Keywords:Guangdong Science Center; mega-structure; long-span; steel frame; joint design; joint test广东省科技计划项目(2004B10101048),(2005A11601014),(2006B37301009);建设部科技计划项目(2005K148), (2006K301),(2007K309)。作者简介：李霆，教授级高级工程师，总工程师， Email:lting@vip.sina.com。参考文献［1］沈蒲生.巨型框架结构设计与施工［M］.北京:机械工业出版社,2007.［2］张季超,曾华健,童华炜,等.广东科学中心饱和淤泥质砂土地基预处理技术的研究与应用［J］.广州大学学报:自然科学版,2007,6(3):62-67.［3］曾华健,张季超，童华炜，等.强夯法处理广东科学中心软弱地基的试验研究［J］. 广州大学学报:自然科学版, 2005, 4(2):184-187.［4］李星荣,魏才昂,丁峙NFDA1,等.钢结构连接节点设计手册［M］. 北京: 中国建筑工业出版社, 2005.［5］李霆,李宏胜,孙兆民,等.大跨巨型钢框架结构隔震设计与分析［J］. 建筑结构,2010,40(8).
［6］张季超，冯和，李霆，等.巨型钢框架中加强型半球节点试验研究.建筑结构，2010，40(8).
