摘要
弦支骨架结构是一种新型预应力空间结构体系,具有刚度大、自平衡、预应力体系设计及施工简单、体系简洁美观等优点,为建筑师提供了一种新的选择。在上海某艺术中心钢屋盖结构方案比选过程中,采用弦支骨架结构体系设计,很好地解决了挠度、温度应力、柱顶外推力等设计难题,屋盖基本达到自平衡,且主梁高跨比可达到1/50。介绍了包括体系组成、荷载工况、静动力性态和施工方案分析等设计过程。弦支骨架结构表现出优异的性能及良好的经济效益。
As a new type of spatial prestressed structures,cable-stayed skeleton structures have following advantages: high stiffness,self-balance,convenient to design and construct,concise and beautiful shape,etc.It was used in the structural scheme comparison and selection of the steel roof structure of an Arts Center in Shanghai.The difficulties in design including its large deflection,temperature stress and radial thrust on the top of the columns were analyzed.The ratio of the main beam's height to the span reaches 1/50.The design including its composition,loads,static/dynamic behavior and construction method,was conducted to prove the excellent behavior and economic benefits of the cable-stayed skeleton structure.
出处
《结构工程师》
2010年第5期14-19,共6页
Structural Engineers
基金
上海科委“世博场馆大空间结构安全保障关键技术”(05dz05812)
