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The efficiencies of many ground motion intensity measures in terms of establishing a relationship between the earthquake response and earthquake properties were evaluated in this study. In scope of the study, the structures at medium period range were considered. The evaluation was performed by using ground motion intensity measures which consider; (i) period elongation due to structural damage and, (ii) the effects of higher modes on the structural response. Moreover, structures with regular plan and elevation geometries with three dimensional and symmetrical structural systems which minimize the unwanted plastic mechanisms were used in the study. The nonlinear time history analyses of the models were performed and the roof displacements of structural models were correlated with ground motion intensity measures. The obtained relationships were evaluated with statistical parameters such as Pearson's Coefficient, Determination Coefficient and Spearman's Coefficient. The results obtained from the study provided illuminating data on which ground motion intensity measures can be used most effectively with which type of structures. For structures in the medium period range, ground motion intensity measures based on velocity and energy are observed to be effective together with the ground motion intensity measures which are based on spectral acceleration scaled within a certain period range, which are frequently used in modern structural codes. [ABSTRACT FROM AUTHOR]

The aim of this study is to determine the effectiveness of rapid evaluation methods in estimate earthquake damages in reinforced concrete buildings. In this study for this purpose, risk distribution of 130 reinforced concrete buildings with severe damage rating in the damage assessment studies carried out post- Elazig-Sivrice (2020) earthquake was evaluated using rapid assessment methods (Simplified method presented in Principles Regarding Definition of Risky Buildings and Canada Seismic Screening method). The results obtained from the rapid evaluation methods were compared with each other and the compatibility of these methods with the existing damage situation post-earthquake was examined. Results of the study showed that; (i) buildings with severe damage post-Elazig-Sivrice (2020) earthquake are classified as medium and high priority buildings according to the Canada Seismic Screening method, (ii) according to the simplified method presented in principles regarding definition of risky buildings, the scores of the building vary in a very wide range, (iii) both methods have results compatible with the current damage situation, (iv) the current damage status of the buildings and scores obtained from the rapid evaluation methods are not fully consistent with the damages status of the buildings defined with the post earthquake studies. [ABSTRACT FROM AUTHOR]

This research study is aimed at evaluating the effects of the variations in the level of earthquake demands on the structures due to the transition from earthquake zone map concept (TEC-2007) to the seismic contour hazard map (TEC- 2019). In the study, coordinate based elastic and reduced design acceleration spectrum of sample points selected for one of the high seismicity regions of Turkey are obtained. For the comparative analyses of elastic design acceleration spectrum, 4 site classes and 3 performance levels are considered as main parameters. For the comparison of reduced response spectrum, (i) 4 site classes, (ii) 3 performance levels, (iii) 4 building types and (iv) 2 structural framing systems were selected as main parameters. Then, these spectrums are compared with the design acceleration spectrum of preceding design approach used for the design and analyses of the structures in Turkey. The design acceleration spectrum is compared in terms of (i) spectral elastic values and (ii) design spectral accelerations. The comparative results mainly showed that in the short period range the spectral acceleration values obtained from the up to date design approach are significantly higher than their counterparts obtained by using the preceding design approach. However, for the longer period range the spectral values obtained using the old response spectrum were higher than those calculated using the new response spectra calculation procedure. [ABSTRACT FROM AUTHOR]