轻质防火保护层铝合金构件升温计算简化  

A simplified method for calculating temperature of aluminum alloy components with light fire protection

作　　者：王卫永[1] 丁勇 张泽江 颜明强 WANG Wei-yong;DING Yong;ZHANG Ze-jiang;YAN Ming-qiang(School of Civil Engineering,Chongqing University,Chongqing 400045,China;Sichuan Fire Science and Technology Research Institute of MEM,Sichuan Chengdu 610036,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]应急管理部四川消防研究所,四川成都610036

出　　处：《消防科学与技术》2021年第1期33-37,共5页Fire Science and Technology

基　　金：国家重点研发计划项目(2018YFC0807600);应急管理部消防救援局科研计划项目(2018XFGG19)。

摘　　要：由于铝合金材料的密度和比热容与钢材相比差别较大,在ISO 834标准升温条件下,铝合金构件的升温过程与钢构件存在明显差异。为了得到有轻质保护层铝合金构件的升温计算简化公式,采用增量法计算了ISO 834标准升温下的轻质保护层铝合金构件升温曲线,并对数据进行非线性拟合分析,得到了有轻质保护层铝合金构件升温计算简化公式,进而根据铝合金构件的临界温度和耐火极限确定防火保护层厚度。研究表明,在相同升温条件下,相同截面的铝合金构件比钢构件升温速率快。Since the density and specific heat of aluminum alloy are different from that of steel,the heating process of aluminum alloy component is obviously different from that of steel component under ISO 834 standard heating condition.In order to get a simplified method for calculating the temperature rise of aluminum alloy components with light fire protection,the temperature rise curve of aluminum alloy components with light fire protection under ISO 834 standard temperature curve was calculated by incremental method,and the data were analyzed and fitted by nonlinear fitting.A simplified method for calculating the temperature rise of aluminum alloy components with light fire protection was obtained,and then the thickness of fire protection could be determined according to the critical temperature and the limit refractory time of aluminum alloy components.The results show that the temperature rate of aluminum alloy members with the same section is faster than that of steel members under the same heating conditions.

关 键 词：铝合金构件 轻质保护层 火灾 温度变化 

分 类 号：X932[环境科学与工程—安全科学] TU391[建筑科学—结构工程]