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| 摘要: |
| 通过芳纶纤维加固钢筋混凝土梁的疲劳试验,得到了钢筋的应变滞回曲线和加固构件的抗弯刚度随循环次数衰减的规律,探讨了芳纶纤维布层数对加固构件疲劳性能的影响.试验表明:采用芳纶纤维进行加固后,钢筋混凝土梁的抗弯、抗裂疲劳性能得到了极大改善,损伤混凝土结构的使用寿命得到有效延长,从而验证了芳纶纤维加固钢筋混凝土结构的有效性和可行性. |
| 关键词: 芳纶纤维布,加固,疲劳试验 |
| DOI： |
| 分类号:TU375.1 |
| 基金项目: |
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| Effect of the Layer of Aramid Fiber Reinforced Plastic on the Fatigue Performance of Reinforced Concrete Beam |
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ZHANG Shen-wei WANG You-zhi ZHANG Qi-lin
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| Abstract: |
| Based on the fatigue test for flexural performance of reinforced concrete beam strengthened with aramid fiber reinforced plastic(AFRP),the effect of fiber layers on the fatigue test performance of the strengthened beam was analyzed according to the strain cycling curve of steel and the stiffness reduction regularity of the beams. The fatigue test results illustrate that the bonded AFRP can improve the fatigue performance of the strengthened beams, enhance the service life of the reinforced concrete structures, which testified the validity and feasibility of this technology in the field of structure strengthening. |
| Key words: aramid fiber reinforced plastic(AFRP),strengthening,fatigue test |
