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Fire safety engineering principles applied to a multi-storey steel building
Proceedings of the Institution of Civil Engineers - Structures and Buildings ( IF 1.6 ) Pub Date : 2021-01-04 , DOI: 10.1680/jstbu.20.00110 Luca Possidente 1 , Alessandro Weiss 2 , Donatella de Silva 3 , Sandro Pustorino 4 , Emidio Nigro 5 , Nicola Tondini 6
Proceedings of the Institution of Civil Engineers - Structures and Buildings ( IF 1.6 ) Pub Date : 2021-01-04 , DOI: 10.1680/jstbu.20.00110 Luca Possidente 1 , Alessandro Weiss 2 , Donatella de Silva 3 , Sandro Pustorino 4 , Emidio Nigro 5 , Nicola Tondini 6
Affiliation
In this paper, fire safety engineering principles were applied to a steel-framed office building. The case study consisted of a 15-storey steel moment-resisting frame designed in Japan. Once the performance criteria had been defined, two severe fire scenarios for the unprotected structure, implying a different degree of building collapse, were identified and modelled in zone models, OZone and consolidated fire and smoke transport (CFast), as well as in the computational fluid dynamics software Fire Dynamics Simulator (FDS). Based on the results of the fire development simulation, several finite-element thermo-mechanical analyses were performed with SAFIR. OZone and CFast models, which are much less computationally demanding, provided comparable failure mode and time with respect to FDS. Since the steel frame was seismically designed as a moment-resisting frame in the two main horizontal building directions, the columns were particularly stocky. Moreover, they were only partially heated because they were located on the compartment edges. For these reasons, columns did not exhibit failure, in contrast to the assumptions taken in the risk-ranking process in relation to the evaluation of the consequences, suggesting a revision of such estimations and a possible iterative procedure for the definition of critical fire scenarios for the structure.
中文翻译:
应用于多层钢结构建筑的消防安全工程原理
在本文中,消防安全工程原理被应用于钢结构办公楼。案例研究包括在日本设计的 15 层钢制抗弯框架。一旦定义了性能标准,在区域模型、OZone 和综合火灾和烟雾传输 (CFast) 以及计算中确定和建模了未受保护结构的两种严重火灾场景,这意味着不同程度的建筑物倒塌。流体动力学软件 Fire Dynamics Simulator (FDS)。根据火灾发展模拟的结果,使用 SAFIR 进行了若干有限元热机械分析。OZone 和 CFast 模型对计算的要求要低得多,它们提供了与 FDS 相当的故障模式和时间。由于钢框架在两个主要的水平建筑方向上被设计为抗震框架,因此柱子特别坚固。此外,它们只是部分加热,因为它们位于隔间边缘。由于这些原因,与风险排序过程中与后果评估相关的假设相反,列没有出现故障,这表明需要对此类估计进行修订,并可能采用迭代程序来定义关键火灾场景。结构。
更新日期:2021-01-04
中文翻译:
应用于多层钢结构建筑的消防安全工程原理
在本文中,消防安全工程原理被应用于钢结构办公楼。案例研究包括在日本设计的 15 层钢制抗弯框架。一旦定义了性能标准,在区域模型、OZone 和综合火灾和烟雾传输 (CFast) 以及计算中确定和建模了未受保护结构的两种严重火灾场景,这意味着不同程度的建筑物倒塌。流体动力学软件 Fire Dynamics Simulator (FDS)。根据火灾发展模拟的结果,使用 SAFIR 进行了若干有限元热机械分析。OZone 和 CFast 模型对计算的要求要低得多,它们提供了与 FDS 相当的故障模式和时间。由于钢框架在两个主要的水平建筑方向上被设计为抗震框架,因此柱子特别坚固。此外,它们只是部分加热,因为它们位于隔间边缘。由于这些原因,与风险排序过程中与后果评估相关的假设相反,列没有出现故障,这表明需要对此类估计进行修订,并可能采用迭代程序来定义关键火灾场景。结构。