4. International Conference on Earthquake Engineering and Seismology (4ICEES), Eskişehir, Türkiye, 11 - 13 Ekim 2017
Simulated ground motions have been used for both hazard and engineering analyses recently, particularly in areas with significant seismic activity and insufficient seismic networks. From an engineering point of view, one important task is to evaluate the efficiency of the simulated records in building response estimation. In this study, a hybrid ground motion simulation framework is presented to obtain broadband ground motion time histories of potential events in Duzce (Turkey). The objective is to evaluate the efficiency of broadband ground motions for structural response simulation. The hybrid ground motion simulation framework presented herein is a combination of a discrete wavenumber finite element method for simulating low frequencies and stochastic finite fault method for the higher frequencies. The proposed technique is first validated by simulation of the 12 November 1999 Duzce earthquake (Mw=7.1) which occurred on North Anatolian Fault Zone, Turkey. Then, spatial distribution of simulated peak ground motion intensities in terms of PGA and PGV values are obtained for the 1999 Duzce (Mw=7.1) earthquake. In addition, ground motion intensities of the simulated records are compared against Ground Motion Prediction Equations (GMPE) derived with global and local datasets. Comparison of the results demonstrates that there is a good match between the simulated and real records. Next, to evaluate the simulated records in building response estimation, nonlinear time history analysis of a typical reinforced-concrete multi-degree-offreedom structure is performed with both real and simulated records of the 1999 Duzce earthquake in the OpenSees platform. The results reveal that reasonable predictions can be made regarding the dynamic response of structures using the records simulated with the approach presented.