古瓦哈蒂IIT一维有效应力非变形非线性地基响应分析

IF 0.5 Q4 ENGINEERING, GEOLOGICAL

International Journal of Geotechnical Earthquake Engineering Pub Date : 2017-01-01 DOI:10.4018/IJGEE.2017010101

D. Basu, A. Dey, S. Kumar

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引用次数: 13

摘要

Groundresponseanalysis(GRA)helpstoassesstheinfluenceofthesoilmediumonthepropagating shearwavesandindicatesaboutthecharacteristicsofthewavesreachingthegroundsurfacefromthe bedrocklevel。SuchastudybecomesimperativefortheurbanizedalluvialbanksofNorth-Eastern regionofIndia，whichislocatedinthehighestseismiczoneofthecountry。Conventionally，GRAis carriedoutbasedequivalentlinearapproach，whichbeingasimplisticapproachisunabletocapturethe nonlinearcharacteristicsofsaturatedsiltysandssubjectedtoseismicshaking。Thisarticlepresentsthe outcomeofseismicone-dimensionalnonlinearGRAofIITGuwahati(locatedonavaryinggeology inthesaturatedalluvialbanksofRiverBrahmaputra)consideringpore-waterpressuredissipation characteristicsandnon-Masingunload-reloadcriteria。Variousgroundresponseparametersobtained fromthestudyhelpsintheaccurateidentificationoftheearthquakeintensitybasedsiteamplification oftheregionexpressedthrougha2-Dmapping。关键词:二维等高线图，放大因子(AF)，地响应分析，非线性有效应力分析，非振动准则，峰值地加速度(PGA)，优势周期，响应谱

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One-Dimensional Effective Stress Non-Masing Nonlinear Ground Response Analysis of IIT Guwahati

Groundresponseanalysis(GRA)helpstoassesstheinfluenceofthesoilmediumonthepropagating shearwavesandindicatesaboutthecharacteristicsofthewavesreachingthegroundsurfacefromthe bedrocklevel.SuchastudybecomesimperativefortheurbanizedalluvialbanksofNorth-Eastern regionofIndia,whichislocatedinthehighestseismiczoneofthecountry.Conventionally,GRAis carriedoutbasedequivalentlinearapproach,whichbeingasimplisticapproachisunabletocapturethe nonlinearcharacteristicsofsaturatedsiltysandssubjectedtoseismicshaking.Thisarticlepresentsthe outcomeofseismicone-dimensionalnonlinearGRAofIITGuwahati(locatedonavaryinggeology inthesaturatedalluvialbanksofRiverBrahmaputra)consideringpore-waterpressuredissipation characteristicsandnon-Masingunload-reloadcriteria.Variousgroundresponseparametersobtained fromthestudyhelpsintheaccurateidentificationoftheearthquakeintensitybasedsiteamplification oftheregionexpressedthrougha2-Dmapping. KEywORDS 2-D Contour Maps, Amplification Factor (AF), Ground Response Analysis, Nonlinear Effective Stress Analysis, Non-Masing Criteria, Peak Ground Acceleration (PGA), Predominant Period, Response Spectra

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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