| 混杂纤维布加固混凝土梁抗弯疲劳性能试验研究 |
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| 引用本文： | 陈绪军,李华锋,杨勇新. 混杂纤维布加固混凝土梁抗弯疲劳性能试验研究[J]. 工业建筑, 2012, 42(6): 77-82 |
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| 作者姓名： | 陈绪军 李华锋 杨勇新 |
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| 作者单位： | 1. 九江学院土木工程与城市建设学院,江西九江,332005
2. 中冶建筑研究总院有限公司,北京,100088 |
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| 基金项目： | 九江学院重点资助科研项目 |
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| 摘 要： | 通过5根钢筋混凝土梁的变幅疲劳试验,研究碳/玻璃混杂、碳/玄武岩混杂纤维布加固梁的弯曲疲劳性能,并与玄武岩纤维布加固梁进行了比较。结果表明:在纤维布粘贴层数相同条件下,混杂纤维布加固梁的抗疲劳性能更优,疲劳寿命明显延长。在均方根等效载荷法的基础上,得到了变幅疲劳试验梁的S-N曲线数学表达式,可供工程设计参数。
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| 关 键 词： | 混杂纤维布 玄武岩纤维布 钢筋混凝土梁 疲劳性能 S-N曲线 |
EXPERIMENTAL STUDY ON FLEXURAL FATIGUE PERFORMANCE OF RC BEAMS STRENGTHENED WITH HYBRID FIBER SHEETS |
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| Chen Xujun,Li Huafeng,Yang Yongxin. EXPERIMENTAL STUDY ON FLEXURAL FATIGUE PERFORMANCE OF RC BEAMS STRENGTHENED WITH HYBRID FIBER SHEETS[J]. Industrial Construction, 2012, 42(6): 77-82 |
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| Authors: | Chen Xujun Li Huafeng Yang Yongxin |
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| Affiliation: | 1.College of Civil Engineering and Urban Construction,Jiujiang University,Jiujiang 332005,China; 2.Central Research Institute of Building and Construction Co.,Ltd of MCC,Beijing 100088,China) |
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| Abstract: | The variable amplitude test of BC beams was investigated with 5 specimens,in which the flexural fatigue behavior of RC beams strengthened with carbon/glass hybrid fiber sheets and carbon/basalt hybrid fiber sheets was studied,and compared with that of RC beams strengthened with basalt fiber sheets.Experimental results showed that the anti-faigue properties of RC beams stengthened with hybrid fiber sheets was better,and the fatigue life was significantly prologed.Based on the root mean square(RMS) method,the S-N curves formula on variable amplitude fatigue was proposed,which may be reference for the engineering design. |
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| Keywords: | hybrid fiber sheets basalt fiber sheets reinforced concrete beam fatigue behavior S -N curve |
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