两面高温下钢筋混凝土压弯构件的试验研究

Experimental Research of Reinforced Concrete Members with Flexure and Axial Load in the Two-side High Temperature

进行了9根两面高温的钢筋混凝上偏心受压构件的试验.结果表明,不均匀高温下的钢筋混凝土偏心受压构件的极限承载力并不一定随偏心距的增加而下降,而是存在一个偏心距不等于零却有最大承载力的极强偏心距点,此点两侧随偏心距的增加构件的极限承载力下降.文中还给出了构件的各种表观现象、破坏形态、侧向挠度和轴向变形等性能随试验温度的变化规律.

This article reports an experiment of 9 reinforced concrete members with flexure and axial load and heated on two-surfaces . The result indicates that the ultimate loads of these members may not drop with the increase of eccentricity. However, there is a strongest eccentricity point that has highest ultimate loads , but its eccentricity is not zero. The ultimate load decreases with increase of eccentricity from this point. The varying law of all kinds of apparent appearance, failure pattern, displacement and axial distortion with the increase of experimental temperature are given.