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http://dx.doi.org/10.12989/eas.2014.6.4.375

Comparing of the effects of scaled and real earthquake records on structural response  

Ergun, Mustafa (Department of Civil Engineering, Karadeniz Technical University)
Ates, Sevket (Department of Civil Engineering, Karadeniz Technical University)
Publication Information
Earthquakes and Structures / v.6, no.4, 2014 , pp. 375-392 More about this Journal
Abstract
Time history analyses have been preferred commonly in earthquake engineering area to determine earthquake performances of structures in recent years. Advances in computer technology and structural analysis have led to common usage of time history analyses. Eurocode 8 allows the use of real earthquake records as an input for linear and nonlinear time history analyses of structures. However, real earthquake records with the desired characteristics sometimes may not be found, for example depending on soil classes, in this case artificial and synthetic earthquake records can be used for seismic analyses rather than real records. Selected earthquake records should be scaled to a code design spectrum to reduce record to record variability in structural responses of considered structures. So, scaling of earthquake records is one of the most important procedures of time history analyses. In this paper, four real earthquake records are scaled to Eurocode 8 design spectrums by using SESCAP (Selection and Scaling Program) based on time domain scaling method and developed by using MATLAB, GUI software, and then scaled and real earthquake records are used for linear time history analyses of a six-storied building. This building is modeled as spatial by SAP2000 software. The objectives of this study are to put basic procedures and criteria of selecting and scaling earthquake records in a nutshell, and to compare the effects of scaled earthquake records on structural response with the effects of real earthquake records on structural response in terms of record to record variability of structural response. Seismic analysis results of building show that record to record variability of structural response caused by scaled earthquake records are fewer than ones caused by real earthquake records.
Keywords
selection of earthquake records; scaling of earthquake records; time domain scaling method; SESCAP;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Kayhan, A.H., Korkmaz, K.A. and Irfanoglu, A. (2011), "Selecting and scaling real ground motion records using harmony search algorithm", Soil Dyn. Earthq. Eng., 31, 941-953.   DOI   ScienceOn
2 Lilhanand, K. and Tseng, W.S. (1988), "Development and application of realistic earthquake time histories compatible with multiple-damping design spectra", Proceedings of 9th World Conference on Earthquake Engineering, August 2-9, Tokyo-Kyoto, Japan, II: 819-824.
3 Ozdemir, Z. and Fahjan, Y.M. (2007), "Comparision of time and frequency domain scaling of real accelerograms to match earthquake design spectra", Sixth National Conference on Earthquake Engineering, Istanbul, Turkey.
4 MathWorks (2010), Graphical user interfaces in MATLAB, The Language of Technical Computing, Version 7.10.0.499 (R2010a).
5 Mukherjee, S. and Gupta, V.K. (2002), "Wavelet-based generation of spectrum-compatible time-histories", Soil Dyn. Earthq. Eng., 22(9), 799-804.   DOI   ScienceOn
6 Naeim, F., Alimoradi, A. and Pezeshk, S. (2004), "'Selection and scaling of ground motion time histories for structural design using genetic algorithms", Earthq. Spectra, 20(2), 413-426.   DOI   ScienceOn
7 Pacific Earthquake Engineering Research (PEER) Center (2006), PEER strong motion database, http://peer.berkeley.edu/smcat.
8 SAP2000 (2008), Integrated finite element analysis and design of structures, Computers and Structures Inc, Berkeley, California, USA.
9 Shama, A. (2012), "Spectrum compatible earthquake ground motions by Morlet wavelet", 20th Analysis and Computation Specialty Conference, ASCE.
10 Wood, R.L. and Hutchinson, T.C. (2012), "Effects of ground motion scaling on nonlinear higher mode building response", Earthq. Struct., 3(6), 869-887.   DOI   ScienceOn
11 Abrahamson, N.A. (1993), Non-stationary spectral matching program RSPMATCH, User Manual.
12 Bolt, B.A. and Gregor, N.J. (1993), "Synthesized strong ground motions for the seismic condition assessment of the eastern portion of the San Francisco bay bridge", Report UCB/EERC-93/12, University of California, Earthquake Engineering Research Center, Berkeley, CA.
13 Bommer, J.J. and Acevedo, A. (2004), "The use of real earthquake accelerograms as input to dynamic analysis", J. Earthq. Eng., 8(1), 43-91.
14 Ergun, M. and Ates, S. (2013), "Selecting and scaling ground motion time histories according to Eurocode 8 and ASCE 7-05", Earthq. Struct., 5(2), 129-142.   DOI
15 Hachem, M.M., Mathias, N.J., Wang, Y.Y., Fajfar, P., Tsai, K.C., Ingham, J.M., Oyarzo-Vera, C.A. and Lee, S. (2010), "An international comparison of ground motion selection criteria for seismic design", Joint IABSE-fib Conference, May 3-5, Dubrovnik, Croatia.
16 Hancock, J., Watson-Lamprey, J.A., Abrahamson, N.A., Bommer, J.J., Markatis, A., McCoy, E. and Mendis, R. (2006), "An improved method of matching response spectra of recorded earthquake ground motion using wavelets", J. Earthq. Eng., 10(1), 67-89.
17 Fahjan, Y.M. (2010), "Selection, scaling and simulation of iput ground motion for time history analysis of structures", Seminar and Lunch on Earthquake Engineering and Historic Masonry.
18 Grant, D.N. (2011), "Response spectral matching of two horizontal ground-motion components", J. Struct. Eng., 137(3), 289-297.   DOI   ScienceOn
19 Heo, Y., Kunnath, S.K. and Abrahamson, N. (2011), "Amplitude-scaled versus spectrum-matched ground motions for seismic performance assessment", J. Struct. Eng., 137(3), 278-288.   DOI
20 Iervolino, I. and Cornell, C.A. (2005), "Record selection for nonlinear seismic analysis of structures", Earthq. Spectra, 21(3), 685-713.   DOI   ScienceOn
21 CEN. Eurocode 8. (2003), Design of structures for earthquake resistance. Part 1: General rules, seismic actions and rules for buildings, Final Draft prEN 1998, European Committee for Standardization, Brussels.
22 Iervolino, I., Cosenza, E. and Galasso, C. (2009), "Shedding some light on seismic input selection in Eurocode 8", Eurocode 8 Perspectives from the Italian Standpoint Workshop, 3-12, Doppiavoce, Napoli, Italy.