| 火灾下钢结构的热响应模拟实验分析 |
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| 引用本文： | 刘朝,陈杰,张华玲,黎明.火灾下钢结构的热响应模拟实验分析[J].重庆大学学报(自然科学版),2009,32(4):443-446. |
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| 作者姓名： | 刘朝 陈杰 张华玲 黎明 |
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| 作者单位： | 刘朝,黎明,LIU Chao,LI Ming(重庆大学,动力工程学院,重庆,400030);陈杰,CHEN Jie(重庆大学,动力工程学院,城市建设与环境工程学院,重庆,400030);张华玲,ZHANG Hua-ling(城市建设与环境工程学院,重庆,400030)
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| 基金项目： | 重庆市建委科技资助项目 |
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| 摘 要： | 采用10 kW的电阻炉模拟室内火灾标准温升曲线,DN20无缝钢管水平放置于电阻炉上方,高度分别为0.5、5、10、15 am,进行了裸管、钢管外涂防火涂料及钢管内填充混凝土3种情况下的温度热响应模拟实验研究.实验结果表明,当裸钢管最低点温度达到400℃时,内填混凝土和外涂防火涂料的钢管对应测点的温度分别为215和200℃.外涂防火涂料及钢管内填充混凝土的隔热和吸热作用,使钢管的耐火极限达到2 h以上.
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| 关 键 词： | 钢结构 火灾 热响应 模拟实验 耐火极限 |
| 收稿时间： | 2008/12/8 0:00:00 |
A simulation experiment of the thermal response of steel structures in fires |
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| LIU Chao,CHEN Jie,ZHANG Hua ling and LI Ming.A simulation experiment of the thermal response of steel structures in fires[J].Journal of Chongqing University(Natural Science Edition),2009,32(4):443-446. |
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| Authors: | LIU Chao CHEN Jie ZHANG Hua ling and LI Ming |
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| Institution: | a.College of Power Engineering;b.College of Urban Construction and Environmental Engineering;Chongqing University;Chongqing 400030;P. R. China |
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| Abstract: | A standard indoor temperature rising curve is simulated by using a 10 kW electrical furnace. DN20 seamless steel tubes are horizontally placed on top of the electrical furnace. The distances between the bottom of the steel tubes and the mouth of electrical furnace are 0.5 cm,5 cm,10 cm and 15 cm,respectively. Experiments regarding the thermal response of an unshielded steel tube,a steel tube with an external fire retardant coating,and a concrete-filled steel tube are carried out. When the temperature of low... |
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| Keywords: | steel construction fire thermal response simulation experiment fire-resistance limit |
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