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Abstract

In the energy-based seismic design approach, earthquake ground motion is taken into account as input energy to structures. This energy entering the system during the earthquake is equal to the sum of the kinetic energy, damping energy, elastic strain energy and hysteretic energy components formed in the structure system. Therefore, it is important to know the value of the energy entering the system and how it is consumed. In this study, 3 single degree of freedom (TSD) models, which are assumed to be located in Elazig city center, were formed. Then, the behavior of these structural systems under earthquake acceleration records scaled according to the design spectra of the soil classes of DBYYHY (2007) and TBDY (2018) were evaluated. For this purpose five different earthquake records were selected. These acceleration records were used by scaling separately according to the design spectra for the four soil classes of both regulations, taking into account the area where the buildings are located. For the nonlinear behavior of structural elements, bi-linear model is considered. The motion equations of SDOF models are solved in the time domain using the Newmark average acceleration method. After determining the displacements of each system by using nonlinear dynamic analysis in the time domain, the total input energies of SDOF systems with the earthquake were calculated. The displacements, shear forces and energy inputs in the structures models were compared with each other and the results were evaluated.

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