火灾作用下钢筋混凝土结构的性能研究

Research on behavior of reinforced concrete structure under fire

建筑物遭受火灾高温作用后,构件的承载力、变形、耐久性抗震性能等都会受到不同程度的损伤,使整个建筑结构的耐久性、安全性降低。采用IS0834标准温度-时间曲线下的火灾环境,通过对钢筋混凝土构件的两个主要组成部分:钢筋和混凝土,在高温下和高温后材料性能的分析、归纳,给出了钢筋及混凝土等结构材料抗高温的性能规律,希望能为人们研究混凝土结构的抗火性能提供些参考。

Under the high temperature of fire disasters, the bearing capacity, deformation, durability, and earthguake resistance behavior of structure would suffer different deterioration to reduce the structure＇ s durability and safety. With the help of fire environment of ISO834 standard temperature-time curves, and through analysis on two main components of reinforced concrete structure, i. e, reinforcement and concrete, the high temperature - resisrant charnteristics of structural material, the reinforcement and concncrete, is presenented. It is sure that the present findings could give a reference to anti-fire features research of reinforced concrete structures.