土-灰及土-灰-基础体系的抗震性能

IF 0.5 Q4 ENGINEERING, GEOLOGICAL

International Journal of Geotechnical Earthquake Engineering Pub Date : 2020-01-01 DOI:10.4018/ijgee.2020010103

M. Reddy, Supriya Mohanty, Rehana Shaik

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引用次数: 4

摘要

Inthisstudy，a3Dseismicresponseofsoildeposit，soil-ashdepositandsoil-ash-foundationsystem wasinvestigated.Homogeneoussanddepositof80m×9m×20mwasinitiallyanalyzed。Apond ashlayerisontopofthesanddepositwithvaryingthicknessesandtheefficiencyofthepondash layeronthesanddepositwasevaluatedforitsbestsuitability。Theoptimumsand-ashdepositoverlain byashallowfoundationhasbeenanalysedundertheexcitationoftheNepal(Mw:7.8)andNorth EastIndiaearthquake(Mw:7.5)。Aseismicresponseanalysiswasperformedusingfiniteelement softwarePLAXIS3D。Thefiniteelementmodeladoptedfor thepresentstudyhasbeenvalidated使用[1d非线性]接地响应分析程序。例如deepsoil和Cyclic1D。[结果]oftheresponseanalysishavebeendeterminedintermsofacceleration，displacement，excesspore压力，andexcessporepressureratio。Itwasobservedthat，thesand-pondash-foundationsystem experiencedliquefactionwhenexcitedundertheNepalearthquakemotionwhereasitissafeagainst theNorthEastIndiaearthquake。关键词:有限元分析，池灰，砂，地震反应，浅基础

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Seismic Performance of Soil-Ash and Soil-Ash-Foundation System

Inthisstudy,a3Dseismicresponseofsoildeposit,soil-ashdepositandsoil-ash-foundationsystem wasinvestigated.Homogeneoussanddepositof80m×9m×20mwasinitiallyanalyzed.Apond ashlayerisontopofthesanddepositwithvaryingthicknessesandtheefficiencyofthepondash layeronthesanddepositwasevaluatedforitsbestsuitability.Theoptimumsand-ashdepositoverlain byashallowfoundationhasbeenanalysedundertheexcitationoftheNepal(Mw:7.8)andNorth EastIndiaearthquake(Mw:7.5).Aseismicresponseanalysiswasperformedusingfiniteelement softwarePLAXIS3D.Thefiniteelementmodeladoptedfor thepresentstudyhasbeenvalidated using 1D nonlinear ground response analysis programs. e.g. DEEPSOIL and Cyclic1D. Results oftheresponseanalysishavebeendeterminedintermsofacceleration,displacement,excesspore pressure,andexcessporepressureratio.Itwasobservedthat,thesand-pondash-foundationsystem experiencedliquefactionwhenexcitedundertheNepalearthquakemotionwhereasitissafeagainst theNorthEastIndiaearthquake. KEywoRdS Finite Element Analysis, Pond Ash, Sand, Seismic Response, Shallow Foundation

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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