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本文通过12根三面受火的钢筋混凝土轴心受压柱在不同温度(20~950℃)下的试验,分析了其强度和变形规律。结果表明,不均匀受火的钢筋混凝土轴心受压柱的破坏形态和特征与常温下的截然不同,都是小偏心受压破坏,而且其受力性能与预加荷载水平、温度值和荷载温度途径等密切相关。
In this paper, the strength and deformation of 12 reinforced concrete columns with three sides subjected to fire are tested at different temperatures (20~950°C). The results show that the failure morphology and characteristics of axially loaded reinforced concrete columns subjected to inhomogeneous fire are completely different from those at room temperature. They are small eccentric compression failures, and their stress performance and preload levels, temperature values and loads. Temperature pathways are closely related.