(中国建筑设计研究院有限公司， 北京  100044)

［摘要］2019北京世园会中国馆主体结构分为上部钢结构屋盖和下部混凝土结构两部分，对混凝土展厅部分结构设计的重点、难点进行了剖析。混凝土部分因展陈功能需要，局部设置大空间楼盖，且展陈方要求展厅活载≥10kN/m2。为满足大跨楼盖结构具有足够承载力，在部分混凝土构件中设置型钢。对结构进行了小震弹性和大震弹塑性计算分析，结果表明,混凝土部分刚度、承载力和延性均能满足规范要求。

［关键词］2019北京世园会； 中国馆； 钢骨混凝土； 性能化设计； 大跨楼盖

中图分类号：TU393-3文献标识码：A文章编号：1002-848X(2019)17-0005-04

Design on concrete structure of China Pavilion of International Horticultural Exhibition 2019, Beijing, China

Li Yiran， Cao Yongchao， Shi Hong， He Xiangyu

(China Architecture Design & Research Group， Beijing 100044， China)

Abstract:The main structure of China Pavilion of International Horticultural Exhibition 2019, Beijing, China is divided into two parts: the upper steel roof and the lower concrete structure. The key points and difficulties of the structural design of the concrete pavilion were analyzed. Due to the need of exhibition function, large space floors were locally installed in the concrete part, and the exhibition hall was required to bear the live load more than 10kN/m2. In order to meet the structural strength of large-span floor, section steel was installed in some concrete members. The results show that the stiffness, bearing capacity and ductility of concrete structure can meet the requirements of the code.

Keywords:International Horticultural Exhibition 2019, Beijing, China; China Pavilion; steel reinforced concrete; performance-based design; large-span floor

作者简介：李艺然，硕士，工程师，Email:liyiran@cadg.cn。