Nonlinear Analysis of High-Rise Reinforced Concrete Buildings with Different Structural System and Floor Systems Using Fiber Model in Time History
Authors:-Rıza Torkan, Professor Dr. Mustafa Karaşahin, Professor Dr. Reha Artan, Professor Dr. Turgut Öztürk
Abstract-In order to ensure the safety of structures against earthquakes, it is stated that a structural system that takes into account nonlinear behavior should be installed. This is an approach mandated by TBDY2018, especially for tall buildings. Nonlinear behavior is important to ensure that structures behave realistically under earthquakes. This requires a detailed analysis of the structures to account for the elongation and shortening of the material fibers during an earthquake. These analyses are based on nonlinear solutions in terms of materials and geometry, taking into account second-order effects. Although nonlinear analysis is essential for realistic prediction of earthquake effects in tall buildings, comprehensive studies applying advanced nonlinear analysis techniques using Open Sees software to a large set of carefully selected earthquake records are lacking. Evaluation of the seismic performance of tall buildings in specific earthquake zones is not available. This study provides insights that previous studies have made more limited use of by uniquely combining advanced nonlinear analysis techniques in Open Sees with a total of 22 carefully selected earthquake records to provide a more accurate and realistic assessment of the performance of tall buildings in specific seismic zones by averaging these 22 earthquake records. The aim of this approach is to prevent loss of life and property by minimizing the destructive effects of earthquakes. Consideration of nonlinear behavior allows us to more realistically assess how structures will respond under real earthquakes. Thus, building design and assessment can be made safer.
