| 外贴碳纤维片材加固混凝土梁的延性分析 |
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| 引用本文： | 殷惠光,李秉南.外贴碳纤维片材加固混凝土梁的延性分析[J].中国矿业大学学报,2004,33(6):712-716. |
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| 作者姓名： | 殷惠光 李秉南 |
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| 作者单位： | 1. 徐州工程学院,土木系,江苏,徐州,221008
2. 东南大学,建筑设计研究院,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金项目(50378015) |
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| 摘 要： | 碳纤维片材(CFRP)具有轻质、高强度、耐腐蚀等性能，外贴碳纤维片材正成为一项越来越具有吸引力的混凝土结构加固技术．基于混凝土结构设计规范中抗弯设计计算的基本原理，提出了外贴碳纤维片材加固混凝土梁截面延性的计算方法，并讨论了其影响因素．结果表明，CFRP用量及其滞后应变是影响梁加固后延性的主要因素，加固梁的破坏类型不同，CFRP用量对延性的影响也不同．
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| 关 键 词： | 混凝土结构 梁 碳纤维片材 加固 延性 滞后应变 |
| 文章编号： | 1000-1964(2004)06-0712-05 |
| 修稿时间： | 2004年4月16日 |
Ductility Analysis of Concrete Beam Strengthened by Externally Bonding Carbon Fiber Reinforced Polymer |
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| YIN Hui-guang,LI Bing-nan.Ductility Analysis of Concrete Beam Strengthened by Externally Bonding Carbon Fiber Reinforced Polymer[J].Journal of China University of Mining & Technology,2004,33(6):712-716. |
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| Authors: | YIN Hui-guang LI Bing-nan |
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| Abstract: | Carbon Fiber Reinforced Polymer (CFRP) possesses many good performances such as lightness in weight, high strength and high corrosion resistance. Externally bonding CFRP to the concrete structures is becoming an attractive technology. Based on the fundamental theory of flexural design calculation of concrete structure, a calculation method of cross section ductility of concrete beam strengthened by CFRP was presented, and the influencing factors on it were discussed. The results show that the quantity of CFRP and its lagged strain are the most important factors influencing the ductility. The influence of the quantity of CFRP on the ductility varies with failure types of the strengthened beam. |
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| Keywords: | CFRP strengthening ductility lagged strain |
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