Here we obtain the strain compatibility method ande equilibrium of forces and concepts of fracture mechanincs , they can be used to predict the ultimats strength in flexure that can be achieved by such elements , given the cfrp cross - sectional area , or conversely , the required cfrp cross - sectional area to achieve a targeted resisting moment of rehabilitated flexureal elements Cfrp加固梁在承受彎曲荷載時(shí)的破壞是鋼筋屈服后碳纖維斷裂和鋼筋屈服后混凝土壓碎。本文通過應(yīng)變相容方法和對(duì)破壞機(jī)理的定義,由給定的cfrp橫截面積預(yù)測(cè)加固梁的極限彎曲強(qiáng)度;或者相反,在已知加固梁的極限彎曲強(qiáng)度時(shí)可以求出所需的cfrp橫截面積。