Based on the experiments of five models of rc t - section beams , the ultimate shear capacity of rc t - section beams strengthened with different number of plies , paste formats and initial loads is evaluated 以五片t梁模型破壞試驗為基礎(chǔ),研究了碳纖維布粘貼層數(shù)及方式和二次受力對鋼筋混凝土t梁抗剪極限承載力的影響規(guī)律。