(1 东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 211189; 2 东南大学土木工程学院, 南京 210096; 3 天津泰达消防科技有限公司, 天津 300381; 4 中国矿业大学消防研究院,徐州 221116; 5 河北工业大学土木与交通学院, 天津 300401; 6 上海通正铝结构建设科技有限公司, 上海 201106; 7 上海建科铝合金结构工程研究院, 上海 201199)

摘要: 不锈钢结构具有造型美观、易于维护、可回收利用、耐腐蚀性能优良等优点,在建筑结构领域具有广阔的应用前景. 然而,目前国内外对于不锈钢结构整体抗火性能的研究十分匮乏. 基于第十一届江苏省园艺博览会“未来花园”展区,开展了不锈钢树状支撑有机玻璃水幕体系的缩尺模型火灾试验. 根据佛罗德相似原理,搭建一 1:4缩尺模型,采用 0. 3m×0. 3m 的油盘火作为火源,采用正庚烷作为燃料,火源功率为 100kW. 试验探究了真实火灾下火源上方的空气温度、有机玻璃顶棚下方的空气温度以及不锈钢结构表面温度和热辐射强度的变化情况. 此外,利用 FDS 软件对空气温度场开展了数值模拟,尽管由于风速等环境因素,试验获得的空气温度场波动较大,但总体而言,二者吻合较好.

关键词: 不锈钢; 树状结构; 有机玻璃; 缩尺模型; 火灾试验

中图分类号:TU391 文献标志码:A 文章编号:1002-848X(2023)08-0036-07

DOI:10. 19701 / j. jzjg. ZJ230004

Research on fire test of scale model of acrylic water curtain supported by stainless steel tree-shaped structure

WU Yiwen1,2, PENG Lei3,4, NI Zhaopeng4, FAN Shenggang1,2, SHEN Danyue5, LI Zhiqiang6,7

(1 Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University,Nanjing 211189, China; 2 School of Civil Engineering, Southeast University, Nanjing 210096, China; 3 Tianjin Taida FireTechnology Co. , Ltd. , Tianjin 300381, China; 4 Fire Research Institute, China University of Mining and Technology,Xuzhou 221116, China; 5 School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China;6 Shanghai Tongzheng Aluminium Structure Construction & Technology Co. , Ltd. , Shanghai 201106, China;7 Shanghai Jianke Aluminium Structure & Engineering Research Institute, Shanghai 201199, China)

Abstract: Stainless steel structures have many advantages, such as beautiful appearance, easy maintenance and recycling.excellent corrosion resistance, which has broad application prospects in building structures. However, current research onthe fire resistance of stainless steel structures is very scarce at home and abroad. Based on the Future Garden of 11thJiangsu Provincial Garden Expo, a scale fire test of acrylic curtain system supported by stainless steel tree-shaped structureswas carried out. According to the Froude similarity principle, a 1:4 scale model was built,a pool fire of 0. 3m×0. 3m wasadopted as fire source, and N-heptane was used as fuel. The fire heat release rate was 100kW. The air temperatures abovethe fire source as well as that underneath the acrylic plates and structural surface temperatures as well as thermal radiationintensity of stainless steel structures were investigated. Besides, numerical simulation of air temperatures was conducted byusing FDS software. Although the air temperature in the test fluctuated greatly subjected to environmental factors such aswind speed, the results of test and numerical simulation fit well generally.

Keywords:stainless steel; tree-shaped structure; acrylic; scale model; fire test

∗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:吴谊文,博士研究生,主要从事不锈钢结构、钢结构抗火研究,Email:wuyiwuyia@ seu. edu. cn.

[引用本文] 吴谊文,彭磊,倪照鹏,等. 不锈钢树状支撑有机玻璃水幕缩尺模型火灾试验研究[ J]. 建筑结构,2023,53( 8):36-42. WU Yiwen,PENG Lei,NI Zhaopeng,et al. Research on fire test of scale model of acrylic watercurtain supported by stainless steel tree-shaped structure[J]. Building Structure,2023,53(8):36-42.