Seismic Retrofit Technique For Existing R/C Frames By Attaching Steel Bracing Frames To Columns Projected From Exterior Walls

摘要

This paper proposes a seismic retrofitting technique for existing R/C buildings by attaching steel bracing frames to the col- umns projected from the exterior walls of buildings. Two types of the experimental parameters were focussed in this paper. One is the joint technique between the retrofitting steel columns (beam) and the R/C column (beam). The other is whether or not to anchor the base of the steel columns to the foundations of R/C frames. The cyclic lateral loads were applied to the model specimens, which were about 1/3 the size of R/C frames in school buildings under a constant axial load in the experiments.