箱板装配式组合墙耐火极限研究  

Research on Fire Endurance of Prefabricated Box-Plate Composite Walls

作　　者：兰涛 贺青青[1] 薛辰 秦广冲 门进杰 赵钿[3] LAN Tao;HE Qingqing;XUE Chen;QIN Guangchong;MEN Jinjie;ZHAO Tian(CSIC International Engineering Co.,Ltd.,Beijing 100121,China;School of Civil Engineering,Xian University of Architecture&Technology,Xi’an 710055,China;China Architecture Design&Research Group,Beijing 100089,China)

机构地区：[1]中国船舶重工集团国际工程有限公司,北京100121 [2]西安建筑科技大学土木工程学院,西安710055 [3]中国建筑设计研究院有限公司,北京100089

出　　处：《工业建筑》2023年第1期1-8,共8页Industrial Construction

基　　金：国家重点研发计划项目(2017YFC0703406);中国船舶重工集团科技创新与研发项目(201815k);首规委支持科研基金项目(2017-016);陕西省教育厅重点实验室项目(17JS062)。

摘　　要：箱板装配式组合墙具有良好的抗震性能,为使组合墙在实际工程中满足设计标准要求的耐火极限,对其设计了抗火构造措施,并建立了耐火极限分析模型。模型中对组成抗火构造措施的各部分:岩棉厚度、龙骨间距和开孔排数、石膏板层数和厚度、覆面板材种类、高厚比、轴压比进行参数分析。结果表明,当岩棉厚度超过100 mm后,增加岩棉厚度能更加有效地提高墙体的耐火极限;增加受火面覆面板材厚度和层数也可大幅度提升耐火极限;轴压比对耐火极限影响显著,而龙骨间距和开孔排数几乎无影响。根据上述分析结果提出抗火优化设计方法,为箱板装配式体系防火设计提供理论支持。Prefabricated box-plate composite walls have good seismic performances.In order that the box-plate composite walls might applied to practices meet the requirements of fire endurance in specifications,the fire-resistant structural measures were designed and the fire-resistant limit analysis model was constructed.The parameters of the fire-resistant structural measures for the walls were analyzed,which included rock wool thickness,keel spacing and number of rows of openings,gypsum board layer and thickness,cladding sheet types,depth-thickness ratio,and axial compression ratio.The results showed that after the thickness of rock wool exceeded 100 mm,increasing its thickness could significantly improve the fire resistance limit of the walls;raising the thickness and layers of the cladding panels covering fire surface could also improve the fire resistance greatly;the axial compression ratio had a notable impact on the fire endurance;the distance between keels and the number of rows of openings had low impact.According to the above analytic results,the fire-resistant limit optimization design method was proposed,which could provide support for fire prevention design of prefabricated box-plate steel structures.

关 键 词：箱板装配式钢结构 组合墙 耐火极限 抗火优化设计 

分 类 号：TU352.5[建筑科学—结构工程]