Preliminary site classification of free-field strong motion stations based on Wenchuan earthquake records-中国期刊网

摘要 DuringthegreatWenchuanearthquake,about460permanentfree-fieldstationsinNationalStrongMotionObservationNetworkSystem(NSMONS)ofChinacapturedthemainshockaccelerationrecords.Theserecordscanbeappliedtositeeffectanalyses,andthenthesiteclassificationofthosepermanentstationscanbecarriedoutfirstly,whichwillservedasthefundamentalinformationforfurtherresearch.Inthispaper,thesiteofnear-faultstationsisclassifiedbyhorizontal-to-verticalspectralratio(HVSR)methodaccordingtothesiteclassdescriptionofJapanearthquakeresistantdesigncodeandresponsespectralshapes(RSS)methodfollowingthesiteclassdescriptionofthe1997UniformBuildingCode(UBC)provisions.Thenbasedonthedetailedboreholedataofthosefree-fieldstations,theequivalentshearwavevelocityandoverburdenthicknessarecalculatedandthesiteclassificationsaregivenbyChinesecodeforseismicdesignofbuildings.Furthermore,forthestationshavingsuccessfulmicrotremortestdata,thesitedominantperiodsarecomputedtoverifytheresultsofsiteclassification.Finally,combinedwithalltheaboveresults,therecommendedsiteclassesofnear-faultpermanentfree-fieldstationsaregiven.

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Preliminary site classification of free-field strong motion stations based on Wenchuan earthquake records

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Preliminary site classification of free-field strong motion stations based on Wenchuan earthquake records

来源期刊

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