龚士弘  盛光敏
    （重庆大学冶金及材料工程系 630044）

[提要] 分析了用于建筑结构的钢材在交变地震载荷下的高应变低周疲劳破坏，提出了抗震建筑结构用钢应有的性能要求及对抗震设计选材的建议。
[关键词] 结构钢 钢筋 抗震性 疲劳

The high strain low cycle fatigue fracture of steels used for building structure under conditions of alter-nating seismic loading is analysed. The necessary properties of aseismic building structural steels are proposed. The principles for selecting suitable material in accordance with aseismic design are suggested.
Keywords: structural steels; reinforcing bar; aseismic properties; fatigue