University of Tabriz Journal of Civil and Environmental Engineering 2008-7918 52 107 2022 08 23 Assessment of Different Analysis Methods for Seismic Evaluation of RC Buildings with Irregularities in Plan and Height, Retrofitted Using Steel Bracing Assessment of Different Analysis Methods for Seismic Evaluation of RC Buildings with Irregularities in Plan and Height, Retrofitted Using Steel Bracing 107 120 12641 10.22034/jcee.2021.36032.1861 FA Payam Tehrani Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran Mehdi Salari Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran Journal Article 2019 10 14      One of the seismic retrofitting methods in concrete structures is the use of steel bracing. The present paper attempts to investigate the seismic response of 4 reinforced concrete structures with 10 and 15 stories and two different plans. The structural models are geometrically irregular in plan and they also have vertical structural irregularities due to the soft story. In this study, the seismic response predicted using different linear and nonlinear analysis methods are compared for the case of structures with combinations of irregularities in plan and height. The effect of combinations of irregularities has not been studied in the past and is not considered in current seismic design provisions.      One of the seismic retrofitting methods in concrete structures is the use of steel bracing. The present paper attempts to investigate the seismic response of 4 reinforced concrete structures with 10 and 15 stories and two different plans. The structural models are geometrically irregular in plan and they also have vertical structural irregularities due to the soft story. In this study, the seismic response predicted using different linear and nonlinear analysis methods are compared for the case of structures with combinations of irregularities in plan and height. The effect of combinations of irregularities has not been studied in the past and is not considered in current seismic design provisions. https://ceej.tabrizu.ac.ir/article_12641_e4174678bb11339cb6bb1242c9199e40.pdf