| CFRP加固钢筋混凝土梁的正截面疲劳性能的理论分析 |
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| 引用本文： | 张同猛,刘炎海,邹力,汝海峰.CFRP加固钢筋混凝土梁的正截面疲劳性能的理论分析[J].兰州铁道学院学报,2009,28(3):32-35. |
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| 作者姓名： | 张同猛 刘炎海 邹力 汝海峰 |
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| 作者单位： | 张同猛,ZHANG Tong-meng(中铁二十一局集团有限公司,甘肃,兰州,730000);刘炎海,邹力,LIU Yan-hai,ZOU Li(兰州交通大学,甘肃,兰州,730070);汝海峰,RU Hai-feng(中国中铁二院工程集团有限责任公司,四川,成都,610031) |
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| 基金项目： | 甘肃省高等学校研究生导师科研项目 |
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| 摘 要： | 碳纤维布加固混凝土结构是一种新型结构加固方法．粘贴碳纤维布是提高混凝土梁疲劳性能的有效方法，可用于延长损伤混凝土结构的使用寿命．根据平截面假定和受压区应力图形为三角形等假设，采用等效惯性矩法提出了与普通混凝土梁受弯疲劳验算类似的碳纤维布加固混凝土梁的正截面疲劳验算方法，并通过一个试验实例来加以论证．通过与试验结果的比较，该算法偏于安全，在工程应用范围内是合适的，为工程设计提供了设计依据．同时，提出了CFRP加固钢筋混凝土梁的一种正截面疲劳刚度的验算方法．
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| 关 键 词： | 碳纤维布 钢筋混凝土梁 疲劳验算 疲劳试验 |
Fatigue Theoretical Analysis of RC Beams Strengthened by CFRP Sheet |
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| ZHANG Tong-meng,LIU Yan-hai,ZOU Li,RU Hai-feng.Fatigue Theoretical Analysis of RC Beams Strengthened by CFRP Sheet[J].Journal of Lanzhou Railway University,2009,28(3):32-35. |
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| Authors: | ZHANG Tong-meng LIU Yan-hai ZOU Li RU Hai-feng |
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| Institution: | ZHANG Tong-meng, LIU Yan-hai, ZOU Li, RU Hai-feng (1. China Railway 21^st Bureau Group Co. , Ltd, Lanzhou 730000, China; 2. Shod of Civil Engineering,Lanzhou Jiaotong University, Lanzhou 730070,China; 3. China Railway Eryuan Engineering Group Co. Ltd,Chengdu 610031 ,China) |
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| Abstract: | The concrete structure strengthened by carbon fiber reinforced plastic sheet（CFS） is a new retrofit method in the field of civil engineering. The CFRP sheet is effective for the improvement of fatigue performance of RC beams. According to some assumption, the calculation of flexure in strengthened beams which are under repeated loads can be performed in a similar way that for conventional RC elements. Moreover,they are illustrated a real case. Through comparison with the results of experiment, the calculate way is relatively safe,which is suitable to the engineering application,provided the design basis for engineering design. |
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| Keywords: | CFRP reinforced concrete beam fatigue theoretical analysis |
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