The objective of this study is to evaluate the effectiveness of different CFRP rehabilitation schemes in promoting the seismic performance of existing non-ductile RC frames. Three nonductile RC frames with different heights representing low-, medium-, and high-rise buildings were investigated. Six typical rehabilitation patterns using CFRP composites were considered and the static pushover and dynamic time-history analyses were conducted for predicting the seismic behavior of frames before and after retrofitting. The seismic performance is evaluated in terms of the inter-story drift (ID) ratio, the base shear-top displacement and the maximum applied peak ground acceleration (PGA). It was found that for low-rise frames, the seismic performance is enhanced effectively by only retrofitting the columns of the ground floor. However, for medium-, and high-rise frames, rehabilitation of columns only was not as effective as rehabilitation of both columns and beams. The CFRP rehabilitation should result in the weak floor transfer of frames.
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