Use of seismic intensity measures for comparison of real and simulated records

Date

2019-09-25

Author

Karim Zadeh Naghshineh, Shaghayegh
Askan Gündoğan, Ayşegül
Yakut, Ahmet

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Simulated ground motion records have become major alternatives to real ground motion records for all purposes of earthquake engineering, particularly in areas with limited number of records. Alternative ground motion simulation methods are often used with different computational cost and accuracy. In this study, the fundamental seismological properties of simulated ground motion records are compared with those of actual motions. Simulations are performed using the stochastic finite-fault ground motion simulation methodology based on a corner frequency approach. For investigations, in this study two different regions in Turkey (Erzincan and Duzce), both located on the North Anatolian Fault Zone, are considered. In these areas of interest, a large set of simulated ground motion records involving a wide range of earthquake magnitudes, source-to-site distances, and site properties is prepared. Next, a real ground motion dataset for each study region with consistent source, source-to-site distance, and site properties is formed. The differences and compatibilities between the simulated and real ground motion record sets are evaluated in terms of alternative intensity measures which include peak ground acceleration, peak ground velocity, acceleration spectrum intensity, a modified version of acceleration spectrum intensity for consideration of period range of 0.1-2.5s, Housner intensity, velocity spectrum intensity, cumulative absolute velocity, Arias intensity, significant duration. The selected intensity parameters are computed for both real and simulated record sets and then evaluated in detail through statistical analyses involving the Kolmogorov–Smirnov test. In summary, different similarity patterns are observed for various levels of alternative ground motion intensity parameters.

URI

https://hdl.handle.net/11511/87405
https://iesko2019.org/wp-content/uploads/2019/09/iesko_fulltext.pdf

Conference Name

VI. International Earthquake Symposium Kocaeli 2019 (IESKO 2019)

Collections

Department of Civil Engineering, Conference / Seminar

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Use of Alternative Site Amplification Models in Simulations and Uncertainty Analysis Muratoğlu, Gamze; Askan Gündoğan, Ayşegül; Karim Zadeh Naghshineh, Shaghayegh (null; 2020-12-16) Ground motion simulations are used for earthquake engineering purposes as alternative to real records. The accuracy of the simulations is evaluated using misfit functions in terms of seismological and structural parameters computed for real and observed ground motions. Among all input parameters used in the simulations, site amplification factors carry significant uncertainty. Alternative approaches to estimate site amplifications include generic site amplifications based on quarter-wave-length technique, e...
Comparison of real and simulated records using ground motion intensity measures Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Yakut, Ahmet (2021-08-01) Simulated ground motion records have recently become major alternatives to real records. In this study, differences between simulated and real record sets are evaluated in terms of alternative ground motion intensity measures. As case studies, two regions in Turkey (Erzincan and Duzce) are considered. A large set of simulated records involving a wide range of magnitudes, source-to-site distances, and site properties is prepared. The fundamental seismological properties of stochastically-simulated records ar...
COMPARISONS OF ALTERNATIVE SEISMIC INTENSITY PARAMETERS FOR SELECTED SETS OF REAL AND SIMULATED GROUND MOTION RECORDS Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Yakut, Ahmet (2018-09-02) In areas where inadequate number of regional real ground motion records are available, seismic vulnerability of structural systems can be assessed alternatively using simulated records generated for potential scenario events at the region of interest. However, the main question of interest herein is the accuracy of these simulated records. Thus, this study aims to obtain and compare alternative seismic ground motion intensity measures for the selected sets of real and simulated ground motion records. For th...
Assessment of Simulated Ground Motions in Earthquake Engineering Practice: A Case Study for Duzce (Turkey) Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Yakut, Ahmet (2015-11-20) Simulated ground motions can be used in structural and earthquake engineering practice as an alternative to or to augment the real ground motion data sets. Common engineering applications of simulated motions are linear and nonlinear time history analyses of building structures, where full acceleration records are necessary. Before using simulated ground motions in such applications, it is important to assess those in terms of their frequency and amplitude content as well as their match with the correspondi...
Comparison of Real and Simulated Records Through Selected Seismic Intensity Measures Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Yakut, Ahmet (null; 2017-12-11) Recent studies have shown that simulated ground motions could be utilized to determine the seismic vulnerability of structures where there are limited number of real ground motion records compatible with seismological characteristics of the area of interest. Among various simulation techniques, stochastic finite-fault methodology is believed to practically simulate realistic broadband records including the frequencies which affect the built environment. This study aims to compare the main characteristics of...

Citation Formats

S. Karim Zadeh Naghshineh, A. Askan Gündoğan, and A. Yakut, “Use of seismic intensity measures for comparison of real and simulated records,” Kocaeli, Turkey, 2019, p. 368, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87405.