Akademik Veri Yönetim Sistemi
ÇUKUROVA 16th INTERNATIONAL SCIENTIFIC RESEARCHES CONGRESS, Adana, Türkiye, 23 - 24 Kasım 2025, ss.251-264, (Tam Metin Bildiri)
The strength and rigidity of the load-bearing members are crucial for the earthquake resistance of the structures. For this reason, in addition to columns and beams, shear walls with sufficient strength and rigidity are also used in the design of the load-bearing systems of multi-story reinforced concrete structures. On the other hand, buildings need to be designed to be earthquake-resistant since is located in a tectonic region. At this point, irregularities and second-order effects, which play a vital role in the behavior of buildings against earthquakes, are included in the Turkish Building Earthquake Code 2018 (TBEC/TBDY 2018). Irregularities in the load-bearing system adversely affect the earthquake behavior of buildings. Therefore, it is necessary to control and prevent irregularities in the bearing system for TBEC/TBDY 2018. Displacements occurring in the vertical bearing members within the bearing system can also give rise to second-order effects. For this reason, TBEC/TBDY 2018 demands that the existence of these effects be checked and the necessary precautions be taken. In this study, A1, B2 irregularities, effective interstory drifts, and second-order effects in multi story buildings with and without U-arranged shear walls placed in the middle axis of the bearing system are investigated according to TBEC/TBDY 2018. For this purpose, two 15-story reinforced concrete structures with and without shear walls were designed and analyzed according to the Equivalent Earthquake Load method. As a result of this analysis, the existence of A1, B2 irregularities and effective interstory drift, as well as second-order effects in both earthquake directions, was investigated according to the TBEC/TBDY 2018 code. By evaluating the findings obtained, it was concluded that buildings with shear walls on the central axis exhibited A1 irregularity, as evidenced by changes in the numerical values of the parameters investigated above compared to buildings without shear walls.