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[提要]  根據(jù)碳纖維布加固鋼筋混凝土構(gòu)件受彎性能的試驗(yàn)研究，對(duì)受彎破壞形態(tài)、極限狀態(tài)和設(shè)計(jì)要求進(jìn)行了討論。利用基于平截面假定的正截面受彎承載力的計(jì)算理論，分析了配筋率、加固量及二次受力等因素的影響。在此基礎(chǔ)上提出了正截面受彎承載力的實(shí)用計(jì)算方法，計(jì)算結(jié)果與試驗(yàn)結(jié)果吻合較好，并具有一定的可靠性，可供設(shè)計(jì)參考。
[關(guān)鍵詞]  鋼筋混凝土  碳纖維布  加固  受彎承載力

Based on the experimental researches on the flexural behaviors of reinforced concrete members strengthened with carbon fiber reinforced polymer( CF'RP)sheet,  the failure modes,  ultimate flexural limit states and design requirements are discussed. With theoretical method based on the assumption of plane section, the influence of steel reinforcement ratio, CFRP amount and initial loading level on the flexural strength is analyzed. With the analyzed results,a practical calculation method for the flexural strength is suggested. The calculation results agree with the test results with reasonable reliability.
Keywords:  reinforced concrete; carbon fiber reinforced polymer; strengthening; flexural strength