某大型会展中心大跨度楼盖结构体系比选
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（华东建筑设计研究院有限公司, 上海 200002）
[摘要]：介绍了国内会展建筑楼盖结构体系应用现状，给出了该类展厅楼盖经济板跨。结合国内某大型会展中心楼盖设计，综合对比了钢结构桁架方案与预应力混凝土梁方案各自优缺点，预应力混凝土梁方案在经济性方面具有较大优势。比较了不同次梁布置方案的材料利用效率和工程造价，结果表明大跨度、重荷载楼盖体系采用一、二级次梁布置形式是合适的，具有良好的经济性和结构冗余度。可供同类会展建筑或其他类大跨度、重荷载楼盖设计参考。[关键词]：楼盖体系; 大跨度; 重荷载; 预应力混凝土; 经济分析中图分类号：TU318+.2 文献标识码：Ａ 文章编号：1002-848X(2013)S1-0001-05作者简介：周建龙，教授级高工，一级注册结构工程师，Email：jianlong_zhou@ecadi.com。Comparison and optimization of large-span floor for a Conference Exhibition CenterZhou Jianlong , Fang Yiqing, Bao Lianjin , Jiang Xiaofeng, Sun Zhanjin, Li Ye, Huang Yongqiang(East China Architectural Design & Research Institute Co. ,Ltd. , ShangHai 200002, China )Abstract: The present floor systems of domestic exhibition buildings were introduced and the economical slab span for domestic exhibition buildings was given. Based on the design of floor system for a large-scale exhibition center, the advantages and dis advantages between steel truss scheme and prestressed concrete beam floor scheme was compared，the results indicates that prestressed concrete beam floor scheme has more advantages in the economy. The comparison of materials efficiency and project cost for different arrangement was carried out, the results indicates that it is suitable to adopt the two- levers secondary floor beams with heavy large-span structure, which has good economics and structural redundancy. The large-span structure design with heavy load will be reference to similar structure.Keywords: floor system; long-span floor; heavy load; prestressed concrete; economical analysis
