Investigation of the effect of changes of the concrete structures on ductility and earthquake behavior

Keywords: Impulse analysis, pushover analysis, static impulse, concrete structures, ductility, earthquake responses of concrete structures, structure ductility. In this study, the behavior of the structural structures under reinforced concrete structures by pushover analysis according to the plastic hinge theory is investigated. Load-displacement curves were obtained by pushover analysis of reinforced concrete structures in regions with high earthquake activity and certain determinations were made about ductility coefficients under earthquake effects. Structural vibrations and structural behavior of columns and beams in the structural system were investigated and the changes of horizontal displacements under the increase of horizontal loads were investigated. With the evaluations made, recommendations were given regarding the parameters to be considered when designing reinforced concrete structures. For each of the 6 (six) different model structures examined, push analyzes were performed separately and calculation steps were determined. According to the results, the values such as ductility, stiffness, earthquake load reduction coefficients, energy absorption capacities of these models under earthquake effects were discussed. The effects of the presence of walls in the structural systems of the reinforced concrete structures on the earthquake behavior of the structures were determined and parameters such as ductility coefficients and earthquake load reduction coefficients of the structures were determined and these disadvantages and advantages of the systems were discussed. As a result of the thesis, it was emphasized that the axle space should be the same in both directions and the model geometry should be preserved while modeling the structures. In wall-frame systems where the axle space or structure total axle lengths are different from each other, the walls should be positioned as balanced as possible and in two directions. Since the systems in which the geometry of the structure is close to symmetry will behave closely in both directions under the effects of earthquakes, it will be more accurate to construct the construction systems in this way.