Assessment of synthetic ground motion records obtained from alternative simulation techniques in nonlinear time history analyses of multi-storey frame buildings: A case study

Date

2014-07-02

Author

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

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

238
views

0
downloads

Full time series of ground acceleration are required for nonlinear time history analyses to evaluate the dynamic response of a structure under earthquake excitations. In regions with sparse ground motion data, alternative ground motion simulation techniques are used to generate acceleration time series with varying levels of accuracy. While using simulated records for engineering purposes, it is critical to investigate the efficiency of these records in predicting the real engineering demands. For this purpose, in this study nonlinear time history analyses of typical multi-story reinforced concrete frame structures are performed to compare structural responses to synthetic records with those to the real ground motions of a particular event. The 2009 L'Aquila (Italy) (Mw=6.3) earthquake is simulated using two alternative simulation methods: the Hybrid Integral-Composite method and the Stochastic Finite-fault method. Results of nonlinear time history analyses from the real and synthetic records are compared in terms of maximum displacement of each story levels. The results from this study indicate that the match between the Fourier Amplitude Spectrum of the real and synthetic record around the frequencies that correspond to the fundamental period of the structure governs the misfit between the real and synthetic nonlinear response. We also show that even for cases where nonlinear behavior is more likely, period-dependent SDOF indicators of goodness of fit between a particular real and corresponding synthetic record (such as 5% damped response spectrum) represents the difference in MDOF behavior of frame structures due these records. Finally, we suggest that for earthquake engineering purposes where the synthetics are to be used, simulation of realistic amplitudes over the entire broadband frequency range of interest is essential.

Subject Keywords

Nonlinear time history analysis, Synthetic ground motions, L'aquila, Hybrid ıntegral-composite method, Stochastic finite-fault method

URI

https://hdl.handle.net/11511/54942

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Assessment of alternative simulation techniques in nonlinear time history analyses of multi-story frame buildings: A case study Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Yakut, Ahmet (2017-07-01) In regions with sparse ground motion data, simulations provide alternative acceleration time series for evaluation of the dynamic response of a structure. Different ground motion simulation methods provide varying levels of goodness of fit between observed and synthetic data. Before using the seismologically acceptable synthetic records for engineering purposes, it is critical to investigate the efficiency of synthetics in predicting observed seismic responses of structures. For this purpose, in this study ...
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...
Assessment of Simulated Ground Motions for Their Use in Structural Engineering Practice; A Case Study for Duzce (Turkey) Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Yakut, Ahmet (2017-12-01) 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...
Multi-Mode Pushover Analysis with Generalized Force Vectors Sucuoğlu, Haluk (2009-07-01) A generalized pushover analysis procedure is developed for estimating the inelastic seismic response of structures under earthquake ground excitations. The procedure comprises applying a generalized force vector to the structure in an incremental form with increasing amplitude until a prescribed seismic demand is attained. A generalized force vector is expressed as a combination of modal forces, and simulates the instantaneous force distribution acting on the system when a given interstory drift reaches its...
Evaluation of the Ground Motion Scaling Procedures for Concrete Gravity Dams SOYSAL, BERAT FEYZA; Ay, Bekir Özer; Arıcı, Yalın (Elsevier BV; 2017-09-13) The seismic safety of dam structures is often evaluated using time history analyses conducted with a limited number of ground motions. The selection and scaling of the ground motions is usually the most effective factor determining the results of the safety assessment. The inherent variability in the ground motion as well as the difficulty of conducting the analyses for a large number of ground motions renders the selection as the most important factor in the analysis results. The guidelines for the nonline...

Citation Formats

S. Karim Zadeh Naghshineh, A. Askan Gündoğan, and A. Yakut, “Assessment of synthetic ground motion records obtained from alternative simulation techniques in nonlinear time history analyses of multi-storey frame buildings: A case study,” 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54942.