地震动大数据降维及其特征母波频谱分析

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关键词：主成分分析；数据降维；累积方差解释率；地震动拟合；土耳其地震 中图分类号：TU311.3 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202401013

Abstract：Obtaigdsingondmotiontieistoriestoughumeicalfititomtengeringequirementsisnimportataroach tocompensateforthescarcityorunevenregionaldistributionofavailablestrongmotionrecordsSincestrongmotionrecordsincoporate informationfrotheucerpagtiopatditeditiosusigctalodietlyoodmotiosiulatioate seismologicalandgeologicalenvionmentoftheengieringsite.Thecurrentchallengeliesinextractingareasonablenumbrofground motionsatretaineentialcharacteristisfroalargesetofrigialcodsInispaer，eaifactorsifluencinggoudotion characteristisareosiderdadrongotiocodaegoupedintoatasetbasedoagnitudeistacenditeodiioe principalcomotalysisCetdisitrodcetaeoelatioetgensractestivefodte spectralcharacteristioftigialgoudmotioBivestigatingtectorstigthspetralproertiofeactestic waveforms，acumulativevaranceexpied（CVE）thresholdisproposedfordimesioityductioofgroundmotiondataGroudotio simulationis thenconductedtargetingrecodfromtheTurkeyearthquake （Mw7.6）Theelatioshibetwee tenumberofgroud motion samplesandthCVEthresholdisfurtherclarified，alongwithitsinfluenceonthesimulationoutcomes.Thisstudyprovidesaeliable theoretical basis for the dimensionality reduction of large ground motion datasets.

eywords：principalcompoentanalysis（CA）;datadimesionaityeduction;cumulativevaranceexplanatoryrate（VE）;roudotio simulation; Turkey Earthquake

工程实践中，用于结构抗震设计的地震动可采用相似场地条件的实际地震动记录。（剩余18136字）