火灾下轻型钢结构住宅的有限元模拟
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摘要
为了更好地研究轻钢整体结构的耐火性能,建立一个三层三跨薄壁轻钢龙骨结构整体模型,利用已得火灾下组合墙体内轻钢柱温度时间曲线,有助于模拟低层轻钢住宅单室受火情况。研究结构底层边跨、底层中跨及二层边跨三种受火工况下,结构的变形及应力重分布规律,对三种工况进行了对比分析,有利于研究整体结构最不利受火模式。模拟发现,当结构火灾发生位置处于较低楼层时,对结构的影响越大,在所研究对比的三种工况中,底层中跨受火对轻钢整体结构的耐火性能最为不利。
引文
[1]冯静,杨晓莉,何文跃.轻钢住宅防火体系研究[J].新型建筑材料,2016,43(7):117-119.
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[3]Shahbazian A,Wang YC.Asimplified approach for calculating temperatures in axially loaded cold-formed thin-walled steel studs in wall panel assemblies exposed to fire from one side[J].Thin-Walled Structures,2013(64):60-72.
[4]Chen J,Young B.Experimental investig ation of cold-formed steelmaterialatelevate dtemperatures[J].Thin-Walled Structures,2007,45(1):96-110.
[5]Gunalan S,Mahendran M.Finite element modelling of load bearing cold-formed steel wall systems under fire conditions[J].Engineering Stru ctures,2013,56(6):1007-1027.
[2]徐杨,韦芳芳,沈会,等.非承重冷弯薄壁型钢组合墙体温度场模拟[J].低温建筑技术,2014(12):50-53.
[3]Shahbazian A,Wang YC.Asimplified approach for calculating temperatures in axially loaded cold-formed thin-walled steel studs in wall panel assemblies exposed to fire from one side[J].Thin-Walled Structures,2013(64):60-72.
[4]Chen J,Young B.Experimental investig ation of cold-formed steelmaterialatelevate dtemperatures[J].Thin-Walled Structures,2007,45(1):96-110.
[5]Gunalan S,Mahendran M.Finite element modelling of load bearing cold-formed steel wall systems under fire conditions[J].Engineering Stru ctures,2013,56(6):1007-1027.