| 反向加载条件下碳纤维加固混凝土梁的分析 |
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| 引用本文： | 王磊,朱暾,张彬.反向加载条件下碳纤维加固混凝土梁的分析[J].哈尔滨工业大学学报,2005,37(10):1423-1425,1435. |
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| 作者姓名： | 王磊 朱暾 张彬 |
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| 作者单位： | 武汉大学,土木建筑工程学院,湖北,武汉,430072 |
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| 摘 要： | 通过对4根存在较大宽度裂缝的混凝土梁在反向加载条件下的碳纤维（CFRP）加固试验，研究了反向加载条件下碳纤维加固梁在各个不同加载阶段的力学性能及应变规律，研究结果表明：在同样的碳纤维的用量下，反向加载条件下碳纤维加固后的混凝土梁的钢筋的屈服将比不采用该方法加固的梁来得更晚，加固梁的弹性工作阶段得以延长，提高了碳纤维的利用率，对于提高混凝土梁的主要力学指标具有显著效果.
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| 关 键 词： | 碳纤维 反向加载 加固 混凝土梁 应变 受力 |
| 文章编号： | 0367-6234（2005）10-1423-03 |
| 收稿时间： | 2004-01-14 |
| 修稿时间： | 2004年1月14日 |
Analysis of beams which strengthened with carbon fiber reinforced plastic sheet under the opposite side loading |
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| WANG Lei,ZHU Tun,ZHANG Bin.Analysis of beams which strengthened with carbon fiber reinforced plastic sheet under the opposite side loading[J].Journal of Harbin Institute of Technology,2005,37(10):1423-1425,1435. |
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| Authors: | WANG Lei ZHU Tun ZHANG Bin |
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| Abstract: | Discusses the strengthened the four seriously damaged concrete beams with carbon fiber reinforced plastic sheet under the opposite side loading condition. Analyze the change of stress and meet an emergency of parts of the beams, the submitting of steel reinforcing bar strengthened with carbon fiber reinforced plastic sheet under the opposite side loading condition will later than that of steel reinforcing bar without this method even though they contain the same amount carbon fiber, and prolong the elasticity phase of beams, can better utilized the carbon fiber, the reliability index of beams can be inevitably enhanced. |
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| Keywords: | carbon fiber opposite side loading reinforcement concrete beam strain loading |
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