【摘要】进行了圆钢、螺纹钢、冷拔和冷轧扭4种钢筋高温下力学性能的试验研究，同时进行了螺纹钢筋高温冷却后力学性能的试验研究，并与室温下钢筋力学性能进行了对比分析。了解高温下和高温冷却后钢筋力学性能的变化，对评估钢筋混凝土结构火灾后的性能有重要作用。
【关键词】 钢筋；高温；力学性能；试验研究

 Experimental Research on Mechanics Performance of Steel Bar After High Temperature and Cooled Down from High Temperature
WANG Kongfan, XU Qingfeng, LIU Tinglin

【Abstract】The effect of the steel bar type and the heating temperature on the mechanics performance of steel bar was experimentally investigated. And the mechanics performance of deformed steel bar cooled down from high temperature was also tested. All the test results were compared with the relevant ones in room temperature. The decreasing degree of strength was got. This may be beneficial to the assessment and appraisal of RC structures after fire.
【Key words】steel bar; high temperature; mechanics performance; experimental research