(1 天津泰达消防科技有限公司, 天津 300381; 2 中国矿业大学消防研究院, 徐州 221116;3 河北工业大学土木与交通学院, 天津 300401; 4 江苏汤臣新材料科技有限公司, 泰兴 225542;5 上海通正铝结构建设科技有限公司, 上海 201106; 6 上海建科铝合金结构工程研究院, 上海 201199)

摘要: 通过搭建小型试验平台,研究了下部火源对水平放置的有机玻璃厚板的加热和引燃作用,获取了有机玻璃厚板下表面的引燃时间及火源蔓延规律等特性. 试验结果表明,在下部火源直接加热作用下(温度约 400 ~500℃ ),点火约 3~ 4min 后有机玻璃厚板被引燃,引燃后有机玻璃厚板下表面温度可达到约 800℃ ,随后火势逐渐沿有机玻璃厚板向远端蔓延;当下部火源熄灭后,有机玻璃厚板的火势随即自行熄灭,不发生自持续燃烧. 该试验研究为了解厚型有机玻璃顶棚在被引燃情况下的火灾蔓延特性及消防应急措施方面奠定了技术基础.

关键词: 有机玻璃; 亚克力; 火灾试验; 燃烧; 火蔓延

中图分类号:TU532,X932 文献标志码:A 文章编号:1002-848X(2023)08-0029-07

DOI:10. 19701 / j. jzjg. ZJ230003

Experimental study on fire spread characteristics along lower surface of thick acrylic panels

PENG Lei1, NI Zhaopeng2, SHEN Danyue3, TANG Hongqiang4, LI Lei4, OUYANG Yuanwen5,6

(1 Tianjin Taida Fire Technology Co. , Ltd. , Tianjin 300381, China; 2 Fire Research Institute, China Universityof Mining and Technology, Xuzhou 221116, China; 3 School of Civil and Transportation Engineering, Hebei Universityof Technology, Tianjin 300401, China; 4 Jiangsu Donchamp New Materials Technology Co. , Ltd. , Taixin 225542,China; 5 Shanghai Tongzheng Aluminum Structure Construction & Technology Co. , Ltd. , Shanghai 201106, China;6 Shanghai Jianke Aluminum Structure & Engineering Research Institute, Shanghai 201199, China)

Abstract: By setting up bench test platform, the heating and burning of horizontally placed thick acrylic panels exposed tothe lower fire source was studied. The ignition time and fire spreading characteristics of thick acrylic panels were obtainedduring the tests. The test results show that with a steady exposition of heat (at temperature level of 400~ 500℃ ) from thelower fire source, the thick acrylic panels would be ignited within 3 ~ 4min. Once the panels started to burn, thetemperature below the lower surface of the panels reached about 800℃ , and the fire would gradually spread away from theignited position. Once the fire source burned out, the fire would extinguish along the lower surface of the acrylic panels withno spontaneous. The tests laid a very important foundation for understanding the fire spreading characteristics of thickacrylic ceiling panels and the fire emergency strategy for the acrylic panels in case of fire.

Keywords:acrylic; polymethyl methacrylate(PMMA); fire test; ignition; fire spread

∗住房与城乡建设部研究开发项目“有机玻璃在建筑与结构领域的应用技术研究”(K20200452).

第一作者:彭磊,博士,高级工程师,主要从事建筑防火研究和特殊消防设计等工作,Email:11785912@ qq. com.

[引用本文] 彭磊,倪照鹏,沈丹月,等. 火灾沿有机玻璃厚板下表面蔓延特性试验研究[ J]. 建筑结构,2023,53(8):29-35. PENG Lei,NI Zhaopeng,SHEN Danyue,et al. Experimental study on fire spread characteristics along lowersurface of thick acrylic panels[J]. Building Structure,2023,53(8):29-35.