(中国建筑西南设计研究院有限公司，成都 610081)

［摘要］   研究了镇江体育会展中心综合训练馆组合网架楼盖中钢与混凝土之间的共同作用，并对不同板厚的受力情况进行了几何参数分析，确定了该工程的经济板厚的取值范围。考察了楼板厚度对结构自振频率和挠度的影响，分析表明考虑了混凝土板的组合作用后，结构自振频率显著增大，挠度显著降低，但结构自振频率和挠度并不随板厚的增加而线性改善；当板厚达到一定数值后，由于自重增加，引起自振频率降低，挠度值增大。介绍了网架与混凝土楼板之间连接节点的设计，为类似结构的设计提供参考。
［关键词］   组合网架；   结构分析；   经济板厚；   节点设计；   有限元

Design of the composite grid structure in the multifunctional training
 gymnasium of Zhenjiang Sports and Exhibition Center
Song Taowei, Chi Chun, Chen Wenming, Feng Yuan
(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610081, China)
Abstract:Interactive behavior between steel and concrete of a composite grid in the multifunctional training gymnasium of Zhenjiang Sports and Exhibition Center was investigated, and parameter analysis of the influence of concrete slab thickness was conducted to determine the economical range of slab thickness. Relationship between slab thickness and its natural frequency and deflection was researched. The results show that the natural frequency increases and deflection decreases obviously with the combination of concrete slab, but the natural frequency and deflection dont change linearly with its thickness. When the thickness reaches a limit, as weight increases, its natural frequency will decrease and the deflection will increase. Design of connection joints between steel grid and concrete slab was also presented, which could be reference for similar structures.
Keywords:composite grid structure; structure analysis; economical slab thickness; joint design; finite element method
作者简介：宋涛炜，硕士，Email:stilwell475@163.com。

参考文献
［1］   董石麟.我国大跨度空间钢结构的发展与展望［J］.空间结构, 2000,6(2)：3-13.
［2］   赵才其,彭桂平,赵惠麟，等. 45m跨度大空间组合楼盖的结构分析及试验研究［J］.空间结构, 2007,13(4)：15-18.
［3］   邢丽,董石麟.方钢管焊接空心球节点的弹性有限元分析及试验［J］.工程设计学报,2007,14(4)：329-333.
［4］   GB50017—2003钢结构设计规范［S］. 北京：中国计划出版社,2003.