000019227 001__ 19227
000019227 005__ 20170118182305.0
000019227 04107 $$aeng
000019227 046__ $$k2017-01-09
000019227 100__ $$aZareian, Farzin
000019227 24500 $$aValidation of Simulated Earthquake Ground Motions Based on Evolution of Intensity and Frequency Content

000019227 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019227 260__ $$b
000019227 506__ $$arestricted
000019227 520__ $$2eng$$aSimulated earthquake ground motions can be used in many engineering applications that require time-series as input excitations. However, they need to be validated before they can be utilized with confidence in any engineering applications. Applicability and validation of simulations are subjects of debate in the seismological and engineering communities. We propose a validation methodology at the waveform level that is directly based on characteristics that are expected to influence most structural and geotechnical response parameters. In particular, three time-dependent validation metrics are used to evaluate the evolving intensity, predominant frequency, and bandwidth of a waveform. These validation metrics capture nonstationarities in intensity and frequency content of waveforms, making them ideal to address nonlinear response of structural systems. A two-component error vector is proposed to quantify the average and shape differences between these validation metrics for a simulated and recorded ground-motion pair. Because these metrics are directly related to the waveform characteristics, they provide easily interpretable feedback to seismologists for modifying their ground-motion simulation models compared to metrics that are based on structural and geotechnical responses. To further simplify the use and interpretation of these metrics for engineers, it is shown how six scalar key parameters, including Arias intensity, duration, and predominant frequency, can be extracted from the validation metrics. The proposed validation methodology is a step forward in paving the road for utilization of simulated ground motions in engineering practice, and is demonstrated using examples of recorded and four sets of simulated ground motions from the 1994 Northridge, California earthquake.

000019227 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019227 653__ $$aGround motion simulation validation, validation metrics, ground motion parameters, waveform characteristics.

000019227 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019227 720__ $$aZareian, Farzin$$iHartzell, Stephen$$iRezaeian, Sanaz$$iZhong, Peng
000019227 8560_ $$ffischerc@itam.cas.cz
000019227 8564_ $$s854467$$uhttps://invenio.itam.cas.cz/record/19227/files/3127.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3127.
000019227 962__ $$r16048
000019227 980__ $$aPAPER