不锈钢树状支撑有机玻璃水幕缩尺模型火灾试验研究
引用文献：
吴谊文 彭磊 倪照鹏 范圣刚 沈丹月 李志强. 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，2023，48（08）：36-42.
WU Yiwen PENG Lei NI Zhaopeng FAN Shenggang SHEN Danyue LI Zhiqiang. Research on fire test of scale model of acrylic water curtain supported by stainless steel tree-shaped structure[J]. Building Structure，2023,48（08）：36-42.
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；
基金：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)。
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[2] CRUISE R B L.Life cycle costing and efficiency of metallic structures[C]//Proceedings and Monographs in Engineering Water and Earth Sciences.Poiana Brasov,Romania,2006.
[3] 杜利.卷边C形截面不锈钢受弯构件畸变屈曲承载力研究[D].南京：东南大学，2019.
[4] GARDNER L,BU Y,FRANCIS P,et al.Elevated temperature material properties of stainless steel reinforcing bar[J].Construction and Building Materials,2016,114:977-997.
[5] GARDNER L,INSAUSTI A,NG K T,et al.Elevated temperature material properties of stainless steel alloys[J].Journal of Constructional Steel Research,2010,66(5):634-647.
[6] HUANG Y,YOUNG B.Stress-strain relationship of cold-formed lean duplex stainless steel at elevated temperatures[J].Journal of Constructional Steel Research,2014,92:103-113.
[7] CHEN J,YOUNG B.Stress-strain curves for stainless steel at elevated temperatures[J].Engineering Structures,2006,28(2):229-239.
[8] LIANG Y T,MANNINEN T,ZHAO O,et al.Elevated temperature material properties of a new high-chromium austenitic stainless steel[J].Journal of Constructional Steel Research,2019,152:261-273.
[9] ABDELLA K.Explicit full-range stress-strain relations for stainless steel at high temperatures[J].Journal of Constructional Steel Research,2009,65(4):794-800.
[10] SUO Y Q,FAN S G,DU L,et al.Experimental study on the mechanical properties of high-strength stainless steel at room and elevated temperatures[J].Thin-Walled Structures,2021,165:107973.
[11] Design of steel structures-part 1-2:general rules-structural fire design:Eurocode 3[S].Brussels:European Committee for Standardization,2005.
[12] GARDNER L,BADDOO N R.Fire testing and design of stainless steel structures[J].Journal of Constructional Steel Research,2006,62:532-543.
[13] UPPFELDT B,ALA OUTINEN T,VELJKOVIC M.A design model for stainless steel box columns in fire[J].Journal of Constructional Steel Research,2008,64(11):1294-1301.
[14] LOPES N,VILA REAL P,SIMÕES DA SILVA L,et al.Numerical analysis of stainless steel beam-columns in case of fire[J].Fire Safety Journal,2012,50:35-50.
[15] XING Z,ZHAO O,KUCUKLER M,et al.Fire testing and design of slender stainless steel I-sections in weak-axis flexure[J].Thin-Walled Structures,2022,171:108682.
[16] XING Z,ZHAO O,KUCUKLER M,et al.Fire testing of austenitic stainless steel I-section beam-columns[J].Thin-Walled Structures,2021,164:107916.
[17] XING Z,ZHAO O,KUCUKLER M,et al.Testing of stainless steel I-section columns in fire[J].Engineering Structures,2021,227:111320.
[18] LIU M J,DUAN S J,WU Y W,et al.Fire resistance design of austenitic SUS316 stainless columns subjected to axial compression[J].Journal of Constructional Steel Research,2022,198:107540.
[19] WU Y W,FAN S G,PENG L,et al.Behaviour of large space stainless steel structure subjected to actual fire-scale model experiment[C]//6th International Experts Seminar.London,2022.
[20] 金属材料拉伸试验第2部分：高温试验方法：GB/T 228.2—2015[S].北京：中国标准出版社，2016.
[21] Standard test method for tensile properties of plastics:ASTM D638-2022[S].West Conshohocken:Agencies of the Department of Defense,2022.
[22] MCGRATTAN K,HOSTIKKA S,FLOYD J,et al.Fire dynamics simulator,user’s Guide[M].6th ed.Gaithersburg :NIST Special Publication 1019,2022.
Research on fire test of scale model of acrylic water curtain supported by stainless steel tree-shaped structure
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 on the fire resistance of stainless steel structures is very scarce at home and abroad. Based on the Future Garden of 11th Jiangsu Provincial Garden Expo, a scale fire test of acrylic curtain system supported by stainless steel tree-shaped structures was carried out. According to the Froude similarity principle, a 1:4 scale model was built, a pool fire of 0.3m×0.3m was adopted as fire source, and N-heptane was used as fuel. The fire heat release rate was 100kW. The air temperatures above the fire source as well as that underneath the acrylic plates and structural surface temperatures as well as thermal radiation intensity of stainless steel structures were investigated. Besides, numerical simulation of air temperatures was conducted by using FDS software. Although the air temperature in the test fluctuated greatly subjected to environmental factors such as wind speed, the results of test and numerical simulation fit well generally.
Keywords: stainless steel; tree-shaped structure; acrylic; scale model; fire test
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