设计了 29 个不同配箍率、CFRP 层数及预损伤水准的钢筋混凝土(RC)方柱试件 进行轴压试验;通过对试验数据的回归分析，提出了 CFRP 约束损伤钢筋混凝土的受压本 构模型． 结果表明:外包 CFRP 能有效地恢复甚至提高损伤钢筋混凝土的轴压强度及延 性，其加固效果随 CFRP 用量的增加及预损伤水准的降低更为显著;损伤钢筋混凝土的弹 性模量则随着损伤水准的增大而减少;反复荷载作用下，CFRP 约束损伤钢筋混凝土的应 力 － 应变曲线的包络线与单调荷载作用下的应力 － 应变曲线基本重合;文中提出的模型 预测与试验数据高度吻合．

A total of 29 square reinforced concrete (RC) columns with different amounts of internal steel rein- forcement and of externally wrapped CFRP as well as pre-damage levels，were designed and tested under axial compression． On the basis of regression analysis of the test results，a stress-strain model for CFRP-confined da- maged reinforced concrete under axial compression was proposed． The test results show that CFRP wrapping is effec- tive in restoring or even enhancing the compressive strength and the strain capacity of damaged reinforced concrete． Both the compressive strength and the ultimate strain of CFRP-confined damaged reinforced concrete increase with the increase of the quantities of CFRP and the decrease of pre-damage levels，while the initial elastic modulus de- creases with the increase of pre-damage levels． Under cyclic loading，the envelope curve of cyclic stress-strain re- sponse of CFRP-confined damaged reinforced concrete under axial compression coincides with the monotonic coun- terpart． The prediction provided by the proposed model agrees well with the test results．