In order to achieve remote over temperature alarm when structural components reach their fire resistance limit in building fires,a critical temperature remote over temperature alarm device for structural components was developed using the characteristics of fixed melting point of different alloy materials at high temperatures,combined with controller area network bus technology,and experimental verification was carried out.The ar-rangement of temperature sensing alloys on H-shaped steel col-umn components was analyzed using finite element method.The factors affecting the critical temperature on the surface of H-shaped steel columns when they reach their fire resistance limit un-der the influence of the standard heating curve have been clari-fied,and a calculation method for the critical temperature of H-shaped steel columns has been proposed.The research results in-dicate that the developed alarm device can achieve over tempera-ture alarm when the structural components reach the fire resis-tance limit,and the effectiveness of the alarm device has been verified through experiments;Temperature sensing alloys should be arranged at any position on the surface of steel components within the middle 2/3 column height range of H-shaped steel col-umns;The constraint method,load ratio,section size,and slen-derness ratio have a significant impact on the critical surface tem-perature of H-shaped steel column components.
关键词
控制器局域网/温度/H型钢柱/远程报警
Key words
controller area network/temperature/H-shaped steel columns/remote alarm
维普
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