Importance of Site-Specific Dynamic Soil Properties for Seismic Ground Response Studies: Ground Response Analysis

IF 0.5 Q4 ENGINEERING, GEOLOGICAL

International Journal of Geotechnical Earthquake Engineering Pub Date : 2018-01-01 DOI:10.4018/IJGEE.2018010105

S. Kumar, A. Dey, A. Krishna

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引用次数: 17

Abstract

Thisarticlehighlightstheimplicationofsite-specificpropertiesonseismicgroundresponsestudies. One-dimensional equivalent linear ground response analysis was carried out using site-specific dynamicpropertiesoflocallyavailablesoilsofGuwahaticity,andtheresultsarecomparedwith thoseobtainedusingexistingstrain-dependentdynamicproperties.Accelerationtimehistoriesfrom threestrongmotionswereused.Itwasobservedthataninputmotionhavingahigherpeakbedrock acceleration,utilizingexperimentallyobtaineddynamicsoilproperties,exhibits38%and24%lower peakgroundaccelerationandpeakspectralacceleration,respectively,incomparisontotheresults obtainedusingstandardVD-SIsoilmodels.Theamplificationcharacteristicsofthestrongmotions areobservedtobesignificantlyinfluencedbythedegradationofdampingratiobeyond1%shear strain.TheresultshighlightthenecessityofconductingGRAofanyregionconsideringitsregional dynamicsoilpropertiestoobtainmorerealisticoutcomes. KEywoRDS 1-D Equivalent Linear GRA, Damping Characteristics, DEEPSOIL, Ground Response Contours, Site-Specific Dynamic Soil Properties, Strong Ground Motions

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场地特定动力土壤特性对地震地面反应研究的重要性:地面反应分析

Thisarticlehighlightstheimplicationofsite-specificpropertiesonseismicgroundresponsestudies。使用特定站点dynamicpropertiesoflocallyavailablesoilsofGuwahaticity，andtheresultsarecomparedwith thoseobtainedusingexistingstrain-dependentdynamicproperties进行了一维等效线性接地响应分析。Accelerationtimehistoriesfrom threestrongmotionswereused。Itwasobservedthataninputmotionhavingahigherpeakbedrock加速度，utilizingexperimentallyobtaineddynamicsoilproperties，exhibits38%and24%lower peakgroundaccelerationandpeakspectralacceleration，respectively，incomparisontotheresults obtainedusingstandardVD-SIsoilmodels。Theamplificationcharacteristicsofthestrongmotions areobservedtobesignificantlyinfluencedbythedegradationofdampingratiobeyond1%shear strain。TheresultshighlightthenecessityofconductingGRAofanyregionconsideringitsregional dynamicsoilpropertiestoobtainmorerealisticoutcomes。关键词一维等效线性GRA，阻尼特性，深土，地面响应轮廓，场地特定动力土壤特性，强地震动

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来源期刊

International Journal of Geotechnical Earthquake Engineering ENGINEERING, GEOLOGICAL-

CiteScore

1.90

自引率

25.00%

发文量