(1 同济大学土木工程学院，上海 200092； 2 同济大学土木工程防灾国家实验室，上海 200092；3 重庆大学土木工程学院，重庆 400045)
［摘要］采用有限元数值分析得出了防火涂料局部破损后钢构件的温度分布规律，提出了临界破损长度的概念。分析了柱长、防火涂料厚度、截面形状系数，以及标准火灾升温时间对防火涂料局部破损后钢构件温度分布的影响。给出了破损长度和其影响区域内温度分布的计算公式，可供结构抗火性能分析和设计参考。
［关键词］钢构件；温度；防火涂料；临界破损长度
Influence of fire retardant coating damage on temperature distribution of steel members
Li Guoqiang1，2，Wang Jia1，Wang Weiyong3(1 School of Civil Engineering, Tongji University, Shanghai 200092, China;2 State Key Lab for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China；3 School of Civil Engineering, Chongqing University, Chongqing 400045, China)
Abstract:The temperature distribution of steel members with partial fire retardant coating damage is obtained by analysis using finite element method. The definition of critical damage length is proposed and the influence of column length, thickness of fire retardant coating, shape coefficient and temperature-elevation-time of standard fire on temperature distribution along the steel members with partial fire retardant coating damage are analyzed. A calculation approach is presented to compute the temperature of steel members in the part of damage length and its influence area. The approach can be referred by the researchers and engineers to analysis and design steel structure in fire.
Keywords:steel members; temperature; fire retardant coating; critical damage length
基金项目：国家自然科学基金资助(50738005)，国家自然科学基金创新研究群体资助(50621062)。
作者简介：李国强，博士，教授，博导，Email：gqli@mail.tongji.edu.cn。
参考文献
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