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（中鐵第四勘察設計院集團有限公司， 武漢 430063）
［摘要］為研究不同CFRP加固方式對震損鋼筋混凝土柱抗震性能的影響規(guī)律，基于現(xiàn)行設計規(guī)范，采用高強灌漿料加固、橫向CFRP套箍加固、橫向CFRP套箍結合縱向粘貼CFRP加固3種方式對3個震損鋼筋混凝土柱試件進行加固修復，并開展加固鋼筋混凝土柱低周反復荷載試驗，考察加固試件的抗震性能，并對比分析不同加固方式對試件抗震性能的影響規(guī)律。研究結果表明：經(jīng)過3種加固方式修復的震損試件在壓彎剪復合受力下均表現(xiàn)為彎曲型破壞，符合“強剪弱彎”的抗震設計要求；采用CFRP加固后震損試件的延性得到明顯改善，剛度退化與強度退化趨于均勻，但承載能力與初始剛度均低于加固前試件。3個加固試件中采用橫向CFRP套箍加固的試件具有較高的延性與承載力恢復水平，采用橫向CFRP套箍結合縱向粘結CFRP加固的試件具有較高的承載力與剛度。
［關鍵詞］CFRP加固；震損；鋼筋混凝土柱；抗震性能；高強灌漿料；橫向套箍；強剪弱彎
中圖分類號：TU375-3文獻標識碼：A文章編號：1002-848X(2021)10-0104-07
Experimental study on seismic performance of seismic-damaged reinforced concrete column strengthened by CFRP
WANG Jialei
（China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China）
Abstract:In order to study the influence of different CFRP reinforcement methods on the seismic performance of seismic-damaged reinforced concrete columns. Based on the current design codes, three seismic-damaged reinforced concrete column specimens were reinforced and repaired by three methods: high-strength grouting reinforcement, transverse CFRP hoop reinforcement, and transverse CFRP hoop reinforcement combined with longitudinal paste CFRP reinforcement. A low-cycle repeated load test of reinforced concrete columns after reinforcement was carried out to investigate the seismic performance of the reinforced specimens, and the influence of different reinforcement methods on the seismic performance of specimens was compared and analyzed. The research results show that the seismic-damaged specimens repaired by the three reinforcement methods all show bending failure under the combined stress of compression, bending and shear, which meets the seismic design requirements of “strong shear and weak bending”. The ductility of the seismic-damaged specimens strengthened by CFRP is significantly improved, and the stiffness degradation and strength degradation tend to be uniform, but the bearing capacity and initial stiffness are lower than the specimens before reinforcement. Among the three reinforced specimens, the specimens strengthen by transverse CFRP hoop have a higher level of ductility and bearing capacity recovery, and the specimens strengthen by transverse CFRP hoop combined with longitudinal paste CFRP have higher bearing capacity and rigidity.
Keywords:CFRP strengthening;seismic-damage;reinforced concrete column;seismic performance;high-strength grouting;transverse hoop;strong shear and weak bending
作者簡介：王家磊，碩士，高級工程師，Email：tsywjl@foxmail.com。
