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dc.creatorKottke, Albert R.en_US
dc.creatorRathje, Ellen M.en_US
dc.date.accessioned2016-10-28T19:51:46Z
dc.date.available2016-10-28T19:51:46Z
dc.date.issued2013-06en_US
dc.identifierdoi:10.15781/T25H7BX0P
dc.identifier.citationKottke, Albert R., and Ellen M. Rathje. "Comparison of Time Series and Random?Vibration Theory Site?Response Methods." Bulletin of the Seismological Society of America, Vol. 103, No. 3 (Jun., 2013): 2111-2127.en_US
dc.identifier.issn0037-1106en_US
dc.identifier.urihttp://hdl.handle.net/2152/43260
dc.description.abstractThe random-vibration theory (RVT) approach to equivalent-linear site-response analysis is often used to simulate site amplification, particularly when large numbers of simulations are required for incorporation into probabilistic seismic-hazard analysis. The fact that RVT site-response analysis does not require the specification of input-time series makes it an attractive alternative to other site-response methods. However, some studies have indicated that the site amplification predicted by RVT site-response analysis systematically differs from that predicted by time-series approaches. This study confirms that RVT site-response analysis predicts site amplification at the natural site frequencies as much as 20%-50% larger than time-series analysis, with the largest overprediction occurring for sites with smaller natural frequencies and sites underlain by hard rock. The overprediction is caused by an increase in duration generated by the site response, which is not taken into account in the RVT calculation. Correcting for this change in duration brings the RVT results within 20% of the time-series results. A similar duration effect is observed for the RVT shear-strain calculation used to estimate the equivalent-linear strain-compatible soil properties. An alternative to applying a duration correction to improve the agreement between RVT and time-series analysis is the modeling of shear-wave velocity variability. It is shown that introducing shear-wave velocity variability through Monte Carlo simulation brings the RVT results consistently within +/- 20% of the time-series results.en_US
dc.description.sponsorshipNuclear Regulatory Commission NRC-04-07-122en_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectground-motionen_US
dc.subjectspectraen_US
dc.subjectsimulationen_US
dc.subjectgeochemistry & geophysicsen_US
dc.titleComparison of Time Series and Random-Vibration Theory Site-Response Methodsen_US
dc.typeArticleen_US
dc.description.departmentCivil, Architectural, and Environmental Engineeringen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1785/0120120254en_US
dc.contributor.utaustinauthorRathje, Ellen M.en_US
dc.relation.ispartofserialBulletin of the Seismological Society of Americaen_US


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