LAUSR

Many existing structures require seismic retrofitting based on the latest findings and standards. Most of the works presented in the literature have considered the effect of different retrofitting solutions on the seismic behavior of the structures. Therefore, a comprehensive comparison of these techniques is needed to select the most effective one. Hence, in this paper, we present a comparative study of the most useful retrofitting techniques of RC structures, using the recent and updated versions of the standards and design codes. The merits and weaknesses of the most useful retrofit techniques and the available approaches are presented and demonstrated, which utilizes SeismoStruct and SeismoBuild. A 2-story RC building with the lack of transversal and longitudinal reinforcements is retrofitted by some techniques such as RC jacketing, RC walls, and FRP wrapping. The structural response of the retrofitted buildings is compared with the initial one. The comparison of the results shows that using RC walls at the perimeter of the existing buildings is the most efficient way in reducing demand capacity ratio (DCR) of other structural members, maximum roof displacements, and building fundamental period. The results of the pushover analysis of the buildings retrofitted by RC jackets and RC walls indicate a significant increase in the capacity curves.