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(1 東南大學(xué)混凝土及預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點(diǎn)實(shí)驗(yàn)室, 南京 211189; 2 東南大學(xué)土木工程學(xué)院, 南京 210096; 3 天津泰達(dá)消防科技有限公司, 天津 300381; 4 中國(guó)礦業(yè)大學(xué)消防研究院,徐州 221116; 5 河北工業(yè)大學(xué)土木與交通學(xué)院, 天津 300401; 6 上海通正鋁結(jié)構(gòu)建設(shè)科技有限公司, 上海 201106; 7 上海建科鋁合金結(jié)構(gòu)工程研究院, 上海 201199)

摘要: 不銹鋼結(jié)構(gòu)具有造型美觀、易于維護(hù)、可回收利用、耐腐蝕性能優(yōu)良等優(yōu)點(diǎn),在建筑結(jié)構(gòu)領(lǐng)域具有廣闊的應(yīng)用前景. 然而,目前國(guó)內(nèi)外對(duì)于不銹鋼結(jié)構(gòu)整體抗火性能的研究十分匱乏. 基于第十一屆江蘇省園藝博覽會(huì)“未來(lái)花園”展區(qū),開(kāi)展了不銹鋼樹(shù)狀支撐有機(jī)玻璃水幕體系的縮尺模型火災(zāi)試驗(yàn). 根據(jù)佛羅德相似原理,搭建一 1:4縮尺模型,采用 0. 3m×0. 3m 的油盤(pán)火作為火源,采用正庚烷作為燃料,火源功率為 100kW. 試驗(yàn)探究了真實(shí)火災(zāi)下火源上方的空氣溫度、有機(jī)玻璃頂棚下方的空氣溫度以及不銹鋼結(jié)構(gòu)表面溫度和熱輻射強(qiáng)度的變化情況. 此外,利用 FDS 軟件對(duì)空氣溫度場(chǎng)開(kāi)展了數(shù)值模擬,盡管由于風(fēng)速等環(huán)境因素,試驗(yàn)獲得的空氣溫度場(chǎng)波動(dòng)較大,但總體而言,二者吻合較好.

關(guān)鍵詞: 不銹鋼; 樹(shù)狀結(jié)構(gòu); 有機(jī)玻璃; 縮尺模型; 火災(zāi)試驗(yàn)

中圖分類(lèi)號(hào):TU391 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):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

∗住房與城鄉(xiāng)建設(shè)部研究開(kāi)發(fā)項(xiàng)目“有機(jī)玻璃在建筑與結(jié)構(gòu)領(lǐng)域的應(yīng)用技術(shù)研究”(K20200452).

第一作者:吳誼文,博士研究生,主要從事不銹鋼結(jié)構(gòu)、鋼結(jié)構(gòu)抗火研究,Email:wuyiwuyia@ seu. edu. cn.

[引用本文] 吳誼文,彭磊,倪照鵬,等. 不銹鋼樹(shù)狀支撐有機(jī)玻璃水幕縮尺模型火災(zāi)試驗(yàn)研究[ J]. 建筑結(jié)構(gòu),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.