摘要
介绍石家庄国际展览中心屋盖采用的大跨悬索结构的抗火设计问题,基于GB 51249-2017《建筑钢结构防火技术规范》的方法和要求,进行了拉索的温度场试验。建立了悬索结构抗火计算的整体计算模型,进行了风荷载参与组合的设计荷载作用下拉索构件的抗火验算。进行了悬索整体结构的抗火验算。本项目是国内首次采用GB 51249-2017完成的大跨悬索结构抗火和防火保护设计的工程实例,具有较大的工程示范意义。
The fire resistance design of the large span cable structure in Shijiazhuang international exhibition center was introduced,based on the methods and requirements of GB 51249-2017, Code for Fire Safety of Steel Structures in Buildings, an inhaul cable temperature field experiment was carried out. A fire resistance design on the steel cable members was carried out, in which the loads included wind load. The fire resistance of the overall structure was checked. The project is the first one which designed the fire resistance and fire protection of large span cable structure according to GB 51249-2017, and it has set an example.
引文
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