Comparison of damage occurred in a reinforced concrete structure after february 6, 2023, Kahramanmaraş earthquake with performance analysis results

The primary objective in seismic design is to ensure life safety during earthquakes and to allow only repairable levels of structural damage, while maintaining economic feasibility. According to current codes, the seismic demands acting on such structures can be determined using linear and nonlinear analysis methods supported by advanced software technologies, yielding realistic results. In this thesis, the nonlinear performance analysis of a building damaged during the February 6, 2023 Kahramanmaraş earthquake was carried out using the ProtaStructure software integrated with OpenSees, and the results were compared with the observed damages. In the materials and methods section, the seismicity of the region was examined in the context of historical earthquakes, and the acceleration records and response spectra of the Mw=7.7 ground motion obtained from seven nearby stations were evaluated. In addition, eleven ground motion records, selected from the PEER database in accordance with the seismic characteristics of the region, were scaled for use in time-history analyses. In the results and discussion section, the performance analyses of the building in its design state were conducted through single-mode pushover, multi-mode pushover, and time-history methods based on the scaled ground motions, and potential element damages were identified. Furthermore, the outcomes of time-history analyses using the unscaled acceleration records of the Mw=7.7 event obtained from nearby stations were also presented. Finally, the predicted element damages from the performance analyses were compared with the actual damages observed after the earthquake.