UNIVERSAL SACRIFICIAL-LAYER THICKNESS INDEPENDENT OF DESIGNED FIRE-RESISTANCE TIME FOR WOODEN FIREPROOF-STRUCTURAL-ELEMENTS
UNIVERSAL SACRIFICIAL-LAYER THICKNESS INDEPENDENT OF DESIGNED FIRE-RESISTANCE TIME FOR WOODEN FIREPROOF-STRUCTURAL-ELEMENTS
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通用牺牲层厚度与木质防火结构元件的设计耐火时间无关
DOI：
10.3130/aije.84.607
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Masayuki Miyabayashi
中科院分区：
文献类型：
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作者：
Tomoyo Hokibara;Y. Hasemi;Taiga Saiyoshi;Ryo Takase;D. Kamikawa;N. Yasui;Masayuki Miyabayashi
研究了木质防火结构构件牺牲层的通用设计厚度，以使牺牲层与承重木材之间插入的屏障的必要防火性能最小化。通用设计厚度必须防止牺牲层内的火灾后灼热燃烧，防止任何火灾暴露时间短于设计耐火时间。通过对牺牲层、屏障和近牺牲区部分模型的室内试验，提出了日本柳杉牺牲层的通用厚度为25mm的建议。
Universal design thickness of the sacrificial layer for wooden fireproof structural elements is studied to minimize necessary fire performance of the barrier to be inserted between the sacrificial layer and the load-bearing timber. It is necessary for the universal design thickness to prevent post-fire glowing combustion within the sacrificial layer against any fire exposure time shorter than the designed fire resistance time. Based on bench-scale tests on partial models of the sacrificial layer, the barrier and the near-sacrificial part of the load-bearing timber, the study recommends 25mm as the universal thickness of sacrificial layer for Japanese cedar.