The Vital Role of Structural Fire Engineering
结构防火工程(SFE)通过提供对建筑物和结构在火灾中的行为的准确理解,在提高建筑物和结构的安全性方面发挥着重要作用. 标准和建筑规范通常不能规定所有可能的情况和解决方案. 因此, all stakeholders, including manufacturers, architects and designers, must find best practices for new structure types. 结构防火设计的整体方法有助于解决与新建筑产品和设计相关的重要消防安全挑战.
SFE围绕着对特定结构元件的热响应和结构响应进行综合分析, components or the entire structural framework. 皇家88账户注册种分析的目的是尽可能捕捉最真实的表现, considering all pertinent aspects of the system. 因此, 在处理缺乏标准化的解决方案或涉及使用更直接的方法对具有成本效益的设计具有挑战性的特征时,皇家88账户注册种方法被证明是非常有价值的.
Fire Testing of Steel-Timber Hybrid Structures
钢木混合结构的防火测试对于确保使用皇家88账户注册些材料的建筑物和结构的安全至关重要. 通过进行严格的测试并坚持既定的标准, 消防性能可以自信地进行评估,并可以做出明智的决定,将其纳入建设项目. 坦佩雷大学对大量木材进行了火灾研究,对钢-木混合截面进行了火灾试验, which is becoming increasingly popular due to its many advantages, including lightweight, sustainable and fast installation.
A recent study published in Fire Technology, “Fire Performance of Steel-Timber Hybrid Beam Section,研究了使用交叉层压木材(CLT)的薄板钢-木混合结构的耐火性能。. 在皇家88账户注册项研究中,来自坦佩雷大学、Markku Kauriala有限公司的消防专家. Fire Engineering and Fire Safety Design Consultants, 詹森·休斯采用炉膛试验和数值模拟来分析热剖面, temperature development, and charring behavior. A slim-floor steel-木材 hybrid beam was examined in testing, 其特点是由CLT板和由矩形空心截面(RHS)和钢底板构成的钢梁组成 (图1).
![图1](http://s3.us-east-1.amazonaws.com/jensenhughes/unused/Figure1_Tested_Slim_Floor.png)
The primary inquiries addressed in this research included:
- How does the steel profile affect the charring of the 木材 slab?
- Is it possible to decrease charring, and to what extent, by applying intumescent paint to the steel profile? 膨胀漆是在钢表面涂上一层薄薄的油漆, which at high temperatures, starts to activate and expand.
- 是否有可能用SFE模型来估计木板的炭化?
It was confirmed that if the steel profile is unprotected, 木材板在钢法兰后面的炭化非常相似,因为没有它就会炭化. 正如预期的那样,钢型材中的膨胀涂料减少了上面板坯的炭化. 然而, 由于膨胀涂料在相对较高的温度下会活化,因此要完全避免炭化是一项挑战.
在火灾试验之前对结构进行了模拟,以确保模拟是客观的. The results of the simulations agreed well with the tested ones. 算例表明,SFE可以用于预测创新或新结构的防火性能, non-standard solutions if the model is constructed with care.
![图2](http://s3.us-east-1.amazonaws.com/jensenhughes/unused/Figure2_Residual_Cross_Section_CLT.png)
![图3](http://s3.us-east-1.amazonaws.com/jensenhughes/unused/Figure3_Charring_CLT.png)
![图4](http://s3.us-east-1.amazonaws.com/jensenhughes/unused/Figure4_Numerical-Model.png)
![图5](http://s3.us-east-1.amazonaws.com/jensenhughes/unused/Figure5_Charring_Depth_CLT.png)
结论, SFE在加强钢铁防火策略方面有着良好的记录, composite and 木材 structures, and it continues to provide substantial value, when dealing with novel, 通过帮助确定最佳和消防安全解决方案的非标准化方法.
Jensen Hughes专门提供SFE服务,提供一系列有价值的好处. 皇家88娱乐在SFE方面的专业知识包括优化消防策略, allowing for exposed structures and 创新 solutions, 并加强对火灾中建筑物行为的理解. 皇家88账户注册的SFE服务旨在提供全面的分析和见解,确保安全, 创新, and cost-effective solutions for structural fire safety.
全文可以在2023年8月出版的《皇家88娱乐》杂志上获得.
1. Malaska, M.Alanen, M.Salminen, M.,提莫,J. & Risto R. ”Fire Performance of Steel-Timber Hybrid Beam Section.” Fire Technology, 2023. http://doi.org/10.1007/s10694...