- 摘 要
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（北京工業(yè)大學(xué)建筑工程學(xué)院，北京 100124）
［摘要］為了研究芳綸布（AFRP）對改善腐蝕混凝土橋梁疲勞性能的效果，試驗研究了不同腐蝕率對混凝土梁疲勞性能的影響；并對未加固腐蝕梁和AFRP加固腐蝕梁進(jìn)行了試驗對比，分析了AFRP加固不同腐蝕率鋼筋混凝土梁的疲勞特性。結(jié)果表明AFRP布能顯著提高腐蝕混凝土梁的疲勞壽命；加固中度腐蝕梁的疲勞壽命比其未加固梁提高約10倍，加固重度腐蝕梁的疲勞壽命比中度腐蝕未加固梁提高了20％。
［關(guān)鍵詞］腐蝕；AFRP布；加固；疲勞；混凝土梁
Experimental study on fatigue performance of corroded RC beams strengthened with AFRP sheets
Deng Zongcai，Zhang Lianpu，Zhang Pengfei，Lin Hefei(College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China)
Abstract:In order to research the strengthening effects of AFRP on the fatigue behaviors of the corroded steel reinforced concrete beams, the fatigue properties of RC corroded beams strengthened with AFRP sheets under different ratio of corrosion are researched experimentally inhere, and compared with that of un-strengthened corroded beams and AFRP-strengthened corroded beams. The fatigue performance of AFRP-strengthened corroded beams under different ratio of corrosion is discussed. The results show that compared with un-strengthened moderate corroded beams, the fatigue life of moderate corroded RC beams strengthened with AFRP sheets is increased by 10 times, and increased by 20％ for severe corroded RC beams strengthened with AFRP sheets, which indicates that the AFRP sheet can improve significantly the fatigue performance of RC corroded beams.
Keywords:corrosion; AFRP sheet; strengthening; fatigue; concrete beam
國家自然科學(xué)基金項目（50678011），北京市自然科學(xué)基金項目（8082002），教育部博士點基金（200800050012）。
作者簡介：鄧宗才，博士，教授， Email：dengzc@bjut.edu.cn。
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