| 碳纤维布加固部分预应力混凝土梁的疲劳性能研究 |
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| 引用本文： | 童谷生,刘永胜,吴秋兰. 碳纤维布加固部分预应力混凝土梁的疲劳性能研究[J]. 建筑科学, 2008, 24(9) |
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| 作者姓名： | 童谷生 刘永胜 吴秋兰 |
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| 作者单位： | 华东交通大学土木建筑学院,南昌,330013;华东交通大学土木建筑学院,南昌,330013;华东交通大学土木建筑学院,南昌,330013 |
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| 摘 要： | 制作了五根部分预应力混凝土梁,开展了碳纤维布加固梁和未加固梁的对比疲劳试验.试验结果表明:采用粘贴一层碳纤维布加固梁的疲劳寿命比未加固梁提高了23%,粘贴二层碳纤维布的加固梁疲劳寿命提高了55%.加固梁在压区混凝土应变、钢筋残余应变和残余挠度等性能方面都有明显的改善.因此,粘贴碳纤维布可以较好地提高损伤部分预应力梁的抗疲劳性能、延长损伤混凝土梁的使用寿命,为碳纤维布加固混凝土结构的疲劳性能研究提供了试验依据.
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| 关 键 词： | 碳纤维布 部分预应力梁 加固 疲劳试验 |
Study on Fatigue Performance of Partially Prestressed Concrete Beams Strengthened by CFRP-sheets |
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| TONG Gu-sheng,LIU Yong-sheng,WU Qiu-lan. Study on Fatigue Performance of Partially Prestressed Concrete Beams Strengthened by CFRP-sheets[J]. Building Science, 2008, 24(9) |
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| Authors: | TONG Gu-sheng LIU Yong-sheng WU Qiu-lan |
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| Affiliation: | TONG Gu-sheng,LIU Yong-sheng,WU Qiu-lan(School of Civil Engineering , Architecture,East China Jiaotong University,Nanchang 330013,China) |
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| Abstract: | The fatigue tests of the partially prestressed beams strengthened by CFRP-sheets and the non-strengthened beams were conducted comparatively.The results show that the fatigue life of the beams strengthened by CFRP-sheet of one layer is improved by twenty-three percent and improved by fifty-five percent for the beams strengthened by CFRP-sheet of two layers.And the fatigue deformation decreases greatly.The tests show that the CFRP-sheet is greatly useful for the improvement of fatigue performance of partiall... |
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| Keywords: | CFRP partially prestressed beam strengthen fatigue test |
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