| 新型CFRP抗弯加固方法的试验研究 |
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| 引用本文： | 石昌文,何化南,董海,吴智敏.新型CFRP抗弯加固方法的试验研究[J].建筑科学与工程学报,2011,28(1):76-82. |
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| 作者姓名： | 石昌文 何化南 董海 吴智敏 |
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| 作者单位： | 大连理工大学海岸和近海工程国家重点实验室,辽宁大连,116024 |
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| 基金项目： | "十一五"国家科技支撑计划项目，国家自然科学基金项目 |
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| 摘 要： | 为了解决外贴碳纤维增强复合材料(CFRP)加固法中加固构件因发生CFRP布剥离而使加固失效的问题,提出了一种新的端部锚固方法,即将CFRP布两端缠绕在铁片上,然后用螺栓把铁片固定于混凝土梁的支座处;对采用该方法加固的钢筋混凝土梁进行了三点弯曲试验。结果表明:这种端部锚固方法可以延缓CFRP布的剥离,即使CFRP布在跨中剥离仍可与梁共同受力,直至CFRP布拉断,从而有效地提高CFRP的利用率;此外,加固梁表现出良好的延性破坏特征。
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| 关 键 词： | CFRP 端部锚固 混凝土 延性破坏 |
Experiment Research on New Method of Flexural Strengthened with CFRP |
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| SHI Chang-wen,HE Hua-nan,DONG Hai,WU Zhi-min.Experiment Research on New Method of Flexural Strengthened with CFRP[J].Journal of Architecture and Civil Engineering,2011,28(1):76-82. |
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| Authors: | SHI Chang-wen HE Hua-nan DONG Hai WU Zhi-min |
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| Affiliation: | SHI Chang-wen,HE Hua-nan,DONG Hai,WU Zhi-min (State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China) |
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| Abstract: | The concrete members strengthened by external bonded carbon fiber reinforced polymer(CFRP) technique tended to fail by CFRP sheet debonding.In order to solve the problem,authors proposed a new end anchorage method,which made the end of CFRP wrapped in a steel plate,and fixed the steel plate on the reinforced concrete(RC) beam near the support pillar with bolts.Three-point bending tests were carried out on RC beams strengthened by the new end anchorage technique.The results show that this approach can delay ... |
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| Keywords: | CFRP |
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