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fire design methods
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  fire design methods
The following table provides a guide to the practical effects of the different fire design methods.
      


Full - scale fire tests and observations from real fires have shown that the structural resistance of buildings,comprising composite floor slabs and supporting steel beams,is far greater than current fire design methods suggest. This is resulting in the unnecessary specification of passive fire protection to all supporting steel beams. The discrepancy between current design methods and actual structural behavior is due to the design methods ignoring membrane action of the...

Full - scale fire tests and observations from real fires have shown that the structural resistance of buildings,comprising composite floor slabs and supporting steel beams,is far greater than current fire design methods suggest. This is resulting in the unnecessary specification of passive fire protection to all supporting steel beams. The discrepancy between current design methods and actual structural behavior is due to the design methods ignoring membrane action of the floor slab. This paper presents- several simple calculation methods, to allow membrane action of the floor slab to be included in fire safely design of steel structure. A more accurate estimate of the true load- carrying capacity of the building during a fire can therefore be obtained,allowing fire protection to be removed from significant number of steel beams within the building for a given fire resistance period.

通过对真实火灾中的足尺火灾试验和观察显示,含组合楼板和承载钢梁的建筑物的结构承载力比现行抗火设计方法的建议值高出许多。因此规范中规定所有承载钢梁都要添加被动防火保护足不必要的。现行设计方法和实际结构性能之间产生这种差异是由于设计方法中忽略了楼板的薄膜作用。本文根据国外有关资料给出了几种简单计算方法,允许在钢结构抗火设计中考虑楼板的薄膜作用。从而可以更精确地评估火灾下建筑物的真实承载能力,在给定的耐火时间内能减少相当数量钢梁的防火保护。

Fire design is a key step in performance\|based design. In this paper, several fire design methods have been introduced and fire design in a high\|rack warehouse has been presented as an example to show how to apply fire design methods.

火灾场景的设置是性能化设计的关键步骤 ,重点介绍了常用的火灾增长曲线设计方法 ,并且以高架仓库火灾设计为例 ,说明了如何灵活运用火灾设计方法

Fire design is a key step in performance-based design, it has great influence on smoke movement calculation, evacuation calculation and property protection. In this paper, commonly-used fire design methods including t-squared fire, empirical equations and statistical data-based design method,have been introduced and fire design in different buildings has been presented as example to show how to apply different design methods in different buildings.

火灾场景的设置是性能化设计的关键步骤 ,它对烟气运动 ,人员疏散的计算和建筑财产保护有重要的影响。本文重点介绍了火灾增长曲线设计中常用的方法 ,包括 :t2 增长 ,经验公式和统计数据设计方法。并就如何在不同的场所应用不同的火灾设计方法 ,以案例的形式展开了讨论

 
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