Experimental Study on Residual Flexural Behavior of Reinforced Concrete Beams after Exposure to Fire
Reinforced Concrete (RC) beams in the building structures are usually assumed as a ‘T’-shaped beam when the effects of adjacent slab flange are considered. However, experimental studies on residual flexural behavior of ‘T’-shaped RC beams are rarely reported. The residual flexural behavior of two RC rectangular beams and one RC ‘T’-shaped beam after exposure to ISO834 standard fire were experimentally investigated in the paper. The detailed experimental results, including the measured temperatures, flexural capacity, load-deflection curves and concrete strain are presented. The effects of flange on temperature distribution and residual flexural behavior of RC beams were analyzed. The experimental results show that: (a) the assumption of plane section is applicable for RC ‘T’-shaped beam. (b) The flexural capacity of RC rectangular beam was decreased 18.5％ after exposure to fire for 2 hours, but the ultimate mid-span deflection was increased 55.1％. (c) The residual flexural capacity and the ultimate mid-span deflection of RC rectangular beam after fire was respectively increased 8.4％ and 9.9％ due to the effect of flange.
Reinforced Concrete ‘T’-shaped Beam Fire Residual Flexural Behavior Experiment
Yuye Xu Bo Wu Ming Jiang Xin Huang
State Key Laboratory of Subtropical Building Science, South China University of Technology,Guangzhou Yuye Xu a, Bo Wu b, Ming Jiang c, Xin Huang1State Key Laboratory of Subtropical Building Science, So College of Civil Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
国际会议
沈阳
英文
183-187
2011-11-22（万方平台首次上网日期，不代表论文的发表时间）