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徐福泉1，李東彬1，趙基達(dá)1，黃競強(qiáng)2
(1 中國建筑科學(xué)研究院，北京100013; 2 天津大學(xué)，天津300072)[摘要] 目前，纖維材料已經(jīng)廣泛被應(yīng)用在工程結(jié)構(gòu)加固中。使用預(yù)應(yīng)力碳纖維板加固受彎構(gòu)件，可以充分發(fā)揮碳纖維板的強(qiáng)度，提高結(jié)構(gòu)的正常使用性能和極限承載能力。進(jìn)行了預(yù)應(yīng)力碳纖維板加固鋼筋混凝土梁的試驗(yàn)研究。考慮了二次受力的影響，分析了預(yù)應(yīng)力碳纖維板加固鋼筋混凝土簡支梁的受彎承載性能，討論了預(yù)應(yīng)力碳纖維板加固梁的計(jì)算方法。
[關(guān)鍵詞] 預(yù)應(yīng)力；碳纖維板；加固Experimental research on reinforced concrete beams strengthened by prestressing CFRP plate
Xu Fuquan1, LiDongbin1, Zhao Jida1, Huangjinqiang2
(1 China Academy of Building Research, Beijing 100013, China; 2 Tianjin University, Tianjin 300072, China)Abstract: At present, FRP material has been widely used in structure engineering. Prestressing CFRP can effectively improve the performance on serviceability lim/t state and limit state of bearing capacity.A comprehensive experiment study was done. The use of prestressing CFRP plate for strengthening the initially loaded beams was also investigated. The load-bearing characteristics of the repaired beams are discussed and the calculating method for the flexural ultimate load is also proposed.
Keywords: prestressing; CFRP plate; strengthen
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