钢框架岩棉夹芯板超高防火隔墙耐火与稳定性能研究  

Research on fire resistance and stability of ultra-high fire partition wall with steel frame and rock wool sandwich panel

作　　者：郝腾飞 赵东拂 李磊[2] 王长辉 符演 Hao Tengfei;Zhao Dongfu;Li Lei;Wang Changhui;Fu Yan(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;China Academy of Building Research Beijing 100013,China;Beijing Advanced Innovation Center for Future Urban Design,School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Multi-Functional Shaking Tables Laboratory,Beijing University of Civil Engineering and Architecture,Beijing 100044 China;Beijing Energy Conservation&Sustainable Urban and Rural Development Provincial and Ministry Coconstruction Collaboration Innovation Center,Beijing 100044,China;Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]中国建筑科学研究院有限公司,北京100013 [3]北京未来城市设计高精尖创新中心,北京100044 [4]北京建筑大学大型多功能振动台阵实验室,北京100044 [5]北京建筑大学北京节能减排与城乡可持续发展省部共建协同创新中心,北京100044 [6]工程结构与新材料北京市高等学校工程研究中心,北京100044

出　　处：《消防科学与技术》2024年第8期1105-1110,共6页Fire Science and Technology

基　　金：国家自然科学基金(51378045);北京建筑大学硕士研究生创新项目(PG2023033)。

摘　　要：为满足大型厂房对轻质超高防火隔墙的需求,提出了一种钢框架岩棉夹芯板超高防火隔墙,并对其耐火性与稳定性进行研究。采用ISO-834标准升温曲线的加热方法,对缩尺比例为1∶0.3岩棉夹芯板防火隔墙进行单面受火试验。并基于有限元软件ABAQUS建立缩尺模型与足尺模型,研究了防火隔墙防火优化前后两种方案下受火面与背火面的温度场变化规律。结果表明:缩尺试验模型与缩尺有限元模型的温度和形变基本吻合;足尺有限元模型的岩棉夹芯板超高防火隔墙在防火优化后,背火面最高温度降低,最大形变降低了75.5%,耐火性与稳定性得到大幅改善,并满足《建筑构件耐火试验方法》对于防火隔墙隔热性和完整性要求。在防火隔墙设计方面,容重为50 kg/m^(2)的钢框架岩棉夹芯板超高防火隔墙,跨度方向每8 m需设一根钢柱,高度方向每3.6 m需设一根钢梁。In order to meet the demand for lightweight,ultra-high fire partition wall in large industrial plants,a steel-framed rock wool sandwich panel ultra-high fire partition wall is proposed,and its fire resistance and stability are studied.Using the heating method of ISO-834 standard heating temperature-time curve,a scaled-down 1:0.3 rock wool sandwich panel fire partition wall is tested by a one-sided fire test.Based on the finite element software ABAQUS,both scaled and full-scale models are established to investigate the temperature field changes on the fireexposed and non-fire-exposed sides before and after the fire optimization of the fire partition wall.The results indicate that the temperature and deformation of the scaled experimental model are basically consistent with the scaled finite element model.After fire optimization,the maximum temperature on the non-fireexposed side of the full-scale finite element model of the rock wool sandwich panel ultra-high fire partition wall decreased by 64.3%,and the maximum deformation decreased by 75.5%.The fire resistance and stability were significantly improved,meeting the requirements for thermal insulation and integrity of fire partition wall in the Fire-resistance tests-Elements of building con⁃struction.In terms of fire partition wall design,a steel-framed rock wool sandwich panel ultra-high fire partition wall with a weight of 50 kg/m^(2) requires a steel column every 8 m in the span direction and a steel beam every 4 m in the height direction,providing a reference for the design of lightweight,ultra-high fire partition wall with steel framed rock wool sandwich panels.

关 键 词：轻质超高防火隔墙 有限元分析 温度场规律 形心位移 

分 类 号：TU391[建筑科学—结构工程] TU277.1