（中国建筑设计研究院，北京 100044）
［摘要］东营会展中心展馆主体采用钢筋混凝土框架结构，基础采用高强预应力管桩基础。展馆长约189m，属超长结构，结构设计中通过结构计算和设置后浇带、配置纵向构造钢筋和无粘结预应力钢筋等措施，减小了温度作用和收缩变形对钢筋混凝土结构的不利影响。计算结果表明，降温荷载在框架梁和楼板中产生较大拉应力，楼板开洞部位拉应力集中；温度作用在框架柱中产生剪力和弯矩，在框架柱和基础设计时必须考虑。
［关键词］大跨度屋盖；超长混凝土结构；温度作用
Structural design of the super long structure of Dongying Convention and Exhibition Center
Wang Qi, Zhang Shoufeng, Zhu Bingyin
(China Architecture Design & Research Group, Beijing 100044, China)
Abstract:The structural system of Dongying Convention and Exhibition Center is the reinforced concrete frame and the foundation is prestressed concrete pipe piles. The total length is about 189m which means that the structure is a super long one. The adverse effect of temperature and shrinkage strain on the structure is reduced by structural calculations, setting alter-pouring strips, deploying vertical constructional steel bars and unbonded tendons. The calculation result indicates that the following effects must be considered when designing the frame columns and foundation: the temperature-reducing loading produces a relatively big tension stress to frame beams and floors; there is tension stress concentration in the opening of the floors; shearing forces and bending moments arose in the frame columns due to the effect of the temperature.
Keywords:large-span roof; super long concrete structure; temperature effect
作者简介：王奇，工程师，一级注册结构工程师，Email:wangqi@cadg.cn。
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