| FRP加固已腐蚀混凝土梁的抗疲劳耐久性研究 |
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| 引用本文： | 邓宗才.FRP加固已腐蚀混凝土梁的抗疲劳耐久性研究[J].国防交通工程与技术,2008,6(1):22-25,43. |
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| 作者姓名： | 邓宗才 |
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| 作者单位： | 北京工业大学建筑工程学院,北京,100022 |
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| 基金项目： | 国家自然科学基金
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北京市自然科学基金 |
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| 摘 要： | 介绍了碳纤维布（CFRP）加固腐蚀钢筋混凝土的梁静载和疲劳试验过程，探讨了加固方式和纤维布性能对疲劳寿命的影响。试验对象为6根FRP加固腐蚀梁、1根腐蚀未加固梁和1根标准梁（未腐蚀未加固）；加固方式分别是CFRP缠绕加固梁和FRP在梁底抗弯加固且缠绕纤维布；试验过程中3根梁作静载试验，5根梁作疲劳试验。试验结果表明：FRP加固腐蚀梁的静载极限承载力比标准梁提高37％～38％；加固腐蚀梁的疲劳寿命是未加固梁的2～6倍，但低于标准梁。
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| 关 键 词： | 混凝土梁 碳纤维布(CFRP) 纤维复合材料 腐蚀 疲劳 加固 |
| 文章编号： | 1672-3953（2008）01-0022-05 |
| 收稿时间： | 2007-10-18 |
| 修稿时间： | 2007年10月18 |
Research into the Flexural Fatigue Durability of CFRP-Strengthened Corroded Reinforced Concrete Beams |
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| DENG Zong-cai.Research into the Flexural Fatigue Durability of CFRP-Strengthened Corroded Reinforced Concrete Beams[J].Traffic Engineering and Technology for National Defence,2008,6(1):22-25,43. |
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| Authors: | DENG Zong-cai |
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| Affiliation: | DENG Zong-cai(School of Architectural Engineering,Beijing University of Technology,Beijing100022,China) |
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| Abstract: | The structural behaviors of RC beams strengthened with carbon-fiber-reinforced polymer sheets and exposed to a corrosion environment are summarized in this paper. The effects of different strengthening methods and performances of FRP strengthening sheets on the fatigue life are studied herein. There are altogether eight beams involved in the experiment, of which six are CFRP-strengthened and corroded, one is unstrengthened and corroded, and the other is neither strengthened nor corroded. Two different stren... |
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| Keywords: | concrete beam carbon-fiber-reinforced polymer sheets fiber-compounded materials corrosion fatigue strengthening |
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