Abstract
In this research, experimental study was carried out for investigating the retrofit effects in case of using reinforced concrete (RC) jacketing for upgrading flexural strength and ductility of RC bridge pier that cut-off sections of reinforcement were already retrofitted with FRP sheet jacketing or steel jacketing in the first stage of the seismic retrofit strategy. Two RC pier specimens with different height of RC jacket were tested under cyclic loading test method. The influences of the height of RC jacket on failure behavior and load-carrying capacity of RC pier were confirmed based on the test results. It is concluded that the specimen with the height of RC jacket as four times of the width of column cross section provided well retrofit effects.
