Abstract
Seismic retrofitting on existing RC columns have been carried out, and steel jacket methods are mainly adopted. However, these methods cannot be used in case of using spaces under superstructures for shops or storehouses. So, we have developed new seismic retrofitting methods adopted easily on existing RC columns in above mentioned case. In this method, a steel plate and reinforced bars are used and retrofitting works are carried out from only one face of RC columns section. We made reversal cyclic loading tests of RC columns that were retrofitted by this method. Compared with RC columns that were not retrofitted, we verified the effects of a new retrofitting method for ductility capacity by results of reversal cyclic loading tests. In this report, we report the results of reversal cyclic loading tests of RC columns that were retrofitted by steel plates on one face and the effects of a new retrofitting method.
