RC梁正截面加固对斜截面抗剪性能的影响试验研究
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摘要
设计并制作了11根钢筋混凝土梁,对采用碳纤维布进行抗弯加固的梁与未加固的对比梁分组进行了静载试验,研究了抗弯加固及碳纤维用量对构件斜截面抗剪性能的影响作用。研究结果表明:采用碳纤维布进行正截面抗弯加固,其加固方式及粘贴用量对斜裂缝的开裂荷载影响不大,但会影响结构破坏的形式及特征。正截面抗弯加固有利于提高抗剪承载力,但是并不显著。
By designing and making 11 RC beams,the static experimental studies are carried out through the comparison between the beams strengthened in flexure with CFRP and the non-reinforced ones,in order to study on the influence of strengthening the moment capacity for diagonal shear capacity of RC beams.The results show that the moment reinforcement and the amount of CFRP have little effect on the diagonal crack load;It could change the failure pattern and the failure characteristics;It is beneficial to improve the diagonal shear capacity,but the amplitude of improving is not significant.
By designing and making 11 RC beams,the static experimental studies are carried out through the comparison between the beams strengthened in flexure with CFRP and the non-reinforced ones,in order to study on the influence of strengthening the moment capacity for diagonal shear capacity of RC beams.The results show that the moment reinforcement and the amount of CFRP have little effect on the diagonal crack load;It could change the failure pattern and the failure characteristics;It is beneficial to improve the diagonal shear capacity,but the amplitude of improving is not significant.
引文
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