Experimental Study of Combustible and Non-combustible Construction in a Natural Fire
Experimental Study of Combustible and Non-combustible Construction in a Natural Fire
复制标题
自然火灾中可燃和不燃建筑的实验研究
DOI：
10.1007/s10694-014-0407-4
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发表时间：
2015
期刊：
影响因子：
3.4
通讯作者：
Cameron McGregor
中科院分区：
文献类型：
--
作者：
Xiao Li;Xia Zhang;G. Hadjisophocleous;Cameron McGregor
随着性能化防火设计的采用和新型工程木制品的开发，以木材为基础的中高层建筑开始在地球仪各地建造。这一趋势加速了人们对可燃建筑相关风险的了解。为了比较可燃和不可燃建筑之间的差异，卡尔顿大学进行了一系列全尺寸火灾测试，本文介绍了测试结果。这些测试代表了不同房间结构类型的真实的卧室火灾：交叉层压木材（CLT）结构、轻型木框架结构和轻型钢框架结构。结果表明，石膏板提供了一个更好的保护CLT面板比轻框架墙。与受保护房间的火灾相比，在完全发展阶段，未受保护的CLT房间的火灾显示出加速的火灾发展，并导致超过80%的高总热释放速率（THRR），但略低的室温，和外部燃烧贡献了约64%的THRR。研究还发现，轻型木框架墙和轻型钢框架墙在真实的火灾中表现出很大的不同。此外，较高的炭化速率在两个未受保护的CLT面板（1.0毫米/分钟）和木螺柱（1.2毫米/分钟）中获得的真实的火灾比那些在标准火灾。
With the adoption of performance-based fire design and the development of new engineered wood products, wood-based mid-rise and high-rise buildings are beginning to be constructed all around the globe. This trend has accelerated efforts to gain more understanding of the risks associated with combustible construction. To compare the differences between combustible and non-combustible construction, a series of full scale fire tests was conducted at Carleton University, the results of which are presented in this paper. These tests represented real bedroom fires with different room construction types: cross laminated timber (CLT) construction, light timber frame construction and light steel frame construction. Results showed that gypsum boards provided a better protection to CLT panels than to light frame walls. Compared with fires in the protected rooms, fire in the unprotected CLT room during the fully developed phase showed accelerated fire development and resulted in over 80% higher total heat release rate (THRR) but slightly lower room temperatures, and external burning contributed to about 64% of the THRR. It was also found that the light timber frame walls and light steel frame walls behaved very differently in the real fire. Furthermore, higher charring rates in both the unprotected CLT panels (1.0 mm/min) and wood studs (1.2 mm/min) were obtained in the real fire than those in the standard fire.