【摘要】 编制了碳纤维布加固钢筋混凝土柱的剪力-位移关系全过程分析程序,通过对多种工况下碳纤维布加固钢筋混凝土柱的剪力-位移关系进行大量计算分析,较全面地探讨了碳纤维布配箍特征值、轴压比、剪跨比、箍筋配箍特征值、纵筋配筋率、混凝土强度等参数对碳纤维布加固钢筋混凝土柱的剪力-位移关系及其破坏位移增大系数的影响。在此基础上,给出了碳纤维布加固钢筋混凝土柱破坏位移增大系数的回归计算公式,统计建立了碳纤维布加固钢筋混凝土柱的剪力-位移关系三折线模型中各无量纲特征参数的确定方法。更多还原

【Abstract】 A computer program is developed for analyzing the shear force-displacement relationship of R.C. columns strengthened with carbon fiber sheets (CFSs). Using the computer program, a parametric study is conducted to examine the effect of various parameters (i.e., characteristic value corresponding to carbon fiber sheets, axial load ratio, aspect ratio, characteristic value corresponding to transverse reinforcement, longitudinal reinforcement ratio, and compressive strength of concrete) on the shear force-displacement relationship and damage displacement-enhancement coefficient (DDEC) of reinforced concrete columns strengthened with CFSs. Finally, a regression formula is put forward for the DDEC, and regression formulas for characteristic parameters of the trilinear model of shear force-displacement relationship of R.C. columns strengthened with CFSs are proposed.更多还原