Exami̇nation of a strengthened reinforced concrete structure using the mode addition method according to tbdy 2018

In this thesis study, a reinforced reinforced concrete structure was examined with the mode summing method according to TBDY 2018. SAP2000, a computer-aided building analysis program, was used in the modeling and analysis of the structure. The modeled structure is a four-storey asymmetrical school building. The earthquake records required for the analysis were taken from the PEER Ground Motion Database. In these analyses, the effect of adding curtains to the structure was examined. In the second part of the study, linear and non-linear analysis methods are explained. The analysis was defined in the time domain, which is the subject of the study. In addition, in this section, the definitions of real earthquake acceleration records required for analysis are made. These earthquake acceleration records were selected from various stations and regions. The magnitude, location, time and damage caused by each acceleration record were examined. In addition, the issues that should be taken into consideration when selecting earthquake records specified in TBDY are mentioned. In the third section, the causes of damage to buildings were examined. Additionally, the types of reinforcement applied to existing reinforced concrete structures were examined. The reinforcement made by sheathing applied to columns and beams, fibrous polymer wrapping (FRP) and adding shear walls to the structure were examined. In the fourth chapter, modeling of the examined school structure and the characteristics of the structure are given. Finally, in the fifth section, the modeled structures were analyzed. As a result, these earthquakes were affected by twenty-two different earthquake records used and three different structural models (main model, building model reinforced with shear walls, and building model with enlarged column sections). According to the analysis results, an approximately 44.2% decrease in displacements in the structure with a shear wall added was observed.