| 纤维薄板厚度对增强RC梁破坏模式的影响 |
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| 引用本文： | 孙瑞峰,黄培彦,郑小红. 纤维薄板厚度对增强RC梁破坏模式的影响[J]. 华南理工大学学报(自然科学版), 2004, 32(12): 34-39 |
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| 作者姓名： | 孙瑞峰 黄培彦 郑小红 |
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| 作者单位： | 华南理工大学,交通学院,广东,广州,510640;华南理工大学,交通学院,广东,广州,510640;华南理工大学,交通学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目 (10 2 72 0 4 7,19972 5 0 2 0 )，广东省自然科学基金资助项目 (0 2 0 85 6 ,990 5 6 7) |
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| 摘 要： | 采用理论推导与实验验证的方法，探讨碳纤维薄板厚度对增强钢筋混凝土(RC)梁破坏模式的影响．文中首先通过理论分析，提出了增强RC梁破坏模式的判断方法及公式，随后据此对4组试验梁的破坏模式进行了推定．理论推定结果表明，碳纤维薄板增强RC梁的破坏模式随着碳纤维薄板厚度的变化而改变，4种破坏模式(纤维薄板拉断、界面剥离或钢筋保护层剥离、混凝土压碎和混合破坏模式)分别对应于碳纤维薄板的某一厚度区间．文中最后通过实验验证了上述推定结果．
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| 关 键 词： | 碳纤维薄板 厚度 破坏模式 RC梁 |
| 文章编号： | 1000-565X(2004)12-0034-06 |
| 修稿时间： | 2004-05-21 |
Effect of the Thickness of Carbon Fiber Laminate on the Failure Mode of Strengthened RC Beam |
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| Sun Rui-feng Huang Pei-yan Zheng Xiao-hong. Effect of the Thickness of Carbon Fiber Laminate on the Failure Mode of Strengthened RC Beam[J]. Journal of South China University of Technology(Natural Science Edition), 2004, 32(12): 34-39 |
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| Authors: | Sun Rui-feng Huang Pei-yan Zheng Xiao-hong |
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| Abstract: | In this paper, by means of theoretical derivation and experimental verification, the effect of the thickness of carbon fiber laminate (CFL) on the failure mode of the strengthened RC (Reinforced Concrete) beam was investigated. In the inves tigation, a method and corresponding equations were proposed to estimate the fai - lure modes of 4 groups of beams. The theoretically estimated results show that the failure mode of the RC beam strengthened with CFL changes with the thic kness of CFL and that 4 kinds of failure modes, namely, the tension fracture of CFL, the debonding fracture of interface or the cover concrete separation, the c oncrete crush and the mixed failure mode, are respectively related to the 4 thic kness regions. All these estimated results were finally verified by some tests. |
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| Keywords: | carbon fiber laminate thickness failure mode RC beam |
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