摘要
高温作用下钢筋混凝土梁性能出现劣化,而钢筋混凝土梁温度场是分析构件抗火性能、修复加固火灾后构件损伤的依据.本文利用ABAQUS有限元分析软件,以钢筋单元为对象,对其ISO-834升温曲线下不同保护层厚度、骨料类型及受火方式的钢筋混凝土梁温度场进行了数值模拟,并给出了其温度分布.数值模拟结果与试验吻合较好,从而验证了本模拟的正确性,为高温下钢筋混凝土结构的温度场分析提供了参考依据.
The performance of reinforced concrete beam is deteriorated under the action of high temperature,and the temperature field of reinforced concrete beam is the basis for analyzing the fire-resistance performance of its components and repairing and reinforcing the damage of its components after fire.In this paper,ABAQUS finite element analysis software is used to simulate the temperature field distribution of reinforced concrete beams with different thickness of concrete cover,aggregate types and different heating modes under ISO-834 heating curve.The numerical simulation results are in good agreement with the test results,thus verifying the correctness of this simulation.The reference method was provided for the analysis of temperature field of reinforced concrete structures under high temperature.
作者
曹祥扩
蔡斌
李博
CAO Xiang-kuo;CAI Bin;LI Bo(School of civil engineering,Jilin Jianzhu university,Changchun 130118,China)
出处
《吉林建筑大学学报》
2019年第2期7-12,共6页
Journal of Jilin Jianzhu University
关键词
钢筋混凝土
火灾
有限元分析
reinforced concrete
fire
finite element analysis
