Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.3804
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dc.contributor.authorNagula, Sparsha Sinduri-
dc.contributor.authorHwang, Yu-Wei-
dc.contributor.authorDashti, Shideh-
dc.contributor.authorGrabe, Jürgen-
dc.date.accessioned2021-10-07T06:27:20Z-
dc.date.available2021-10-07T06:27:20Z-
dc.date.issued2021-09-10-
dc.identifier.citationInternational Journal of Geo-Engineering 12 (1): 26 (2021-12-01)de_DE
dc.identifier.issn2198-2783de_DE
dc.identifier.urihttp://hdl.handle.net/11420/10442-
dc.description.abstractA numerical model based on the finite element framework was developed to predict the seismic response of saturated sand under free-field conditions. The finite element framework used a non-linear coupled hypoplastic model based on the u-p formulation to simulate the behaviour of the saturated sand. The u-p coupled constitutive model was implemented as a user-defined routine in commercial ABAQUS explicit 6.14. Results of centrifuge experiments simulating seismic site response of a layered saturated sand system were used to validate the numerical results. The centrifuge test consisted of a three-layered saturated sand system subjected to one-dimensional seismic shaking at the base. The test set-up was equipped with accelerometers, pore pressure transducers, and LVDTs at various levels. Most of the constitutive models used to date for predicting the seismic response of saturated sands have underestimated volumetric strains even after choosing material parameters subjected to rigorous calibration measures. The hypoplastic model with intergranular strains calibrated against monotonic triaxial test results was able to effectively capture the volumetric strains, reasons for which are discussed in this paper. The comparison of the numerical results to centrifuge test data illustrates the capabilities of the developed u-p hypoplastic formulation to perform pore fluid analysis of saturated sand in ABAQUS explicit, which inherently lacks this feature.en
dc.description.sponsorshipDeutscher Akademischer Austauschdienst (DAAD)de_DE
dc.language.isoende_DE
dc.publisherSpringerde_DE
dc.relation.ispartofInternational journal of geo-engineeringde_DE
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/de_DE
dc.subjectCentrifugede_DE
dc.subjectConstitutive modellingde_DE
dc.subjectFree-field responsede_DE
dc.subjectHypoplasticde_DE
dc.subjectLiquefactionde_DE
dc.subject.ddc550: Geowissenschaftende_DE
dc.titleSeismic site response of layered saturated sand: comparison of finite element simulations with centrifuge test resultsde_DE
dc.typeArticlede_DE
dc.identifier.doi10.15480/882.3804-
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.identifier.urnurn:nbn:de:gbv:830-882.0146738-
tuhh.oai.showtruede_DE
tuhh.abstract.englishA numerical model based on the finite element framework was developed to predict the seismic response of saturated sand under free-field conditions. The finite element framework used a non-linear coupled hypoplastic model based on the u-p formulation to simulate the behaviour of the saturated sand. The u-p coupled constitutive model was implemented as a user-defined routine in commercial ABAQUS explicit 6.14. Results of centrifuge experiments simulating seismic site response of a layered saturated sand system were used to validate the numerical results. The centrifuge test consisted of a three-layered saturated sand system subjected to one-dimensional seismic shaking at the base. The test set-up was equipped with accelerometers, pore pressure transducers, and LVDTs at various levels. Most of the constitutive models used to date for predicting the seismic response of saturated sands have underestimated volumetric strains even after choosing material parameters subjected to rigorous calibration measures. The hypoplastic model with intergranular strains calibrated against monotonic triaxial test results was able to effectively capture the volumetric strains, reasons for which are discussed in this paper. The comparison of the numerical results to centrifuge test data illustrates the capabilities of the developed u-p hypoplastic formulation to perform pore fluid analysis of saturated sand in ABAQUS explicit, which inherently lacks this feature.de_DE
tuhh.publisher.doi10.1186/s40703-021-00155-2-
tuhh.publication.instituteGeotechnik und Baubetrieb B-5de_DE
tuhh.identifier.doi10.15480/882.3804-
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.issue1de_DE
tuhh.container.volume12de_DE
dc.rights.nationallicensefalsede_DE
dc.identifier.scopus2-s2.0-85114679157de_DE
tuhh.container.articlenumber26de_DE
local.status.inpressfalsede_DE
local.type.versionpublishedVersionde_DE
local.funding.infoAuthor 1 was funded by German Academic Exchange Service (DAAD) Research Grants—Doctoral Programmes in Germany (57214224).de_DE
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.creatorOrcidNagula, Sparsha Sinduri-
item.creatorOrcidHwang, Yu-Wei-
item.creatorOrcidDashti, Shideh-
item.creatorOrcidGrabe, Jürgen-
item.cerifentitytypePublications-
item.mappedtypeArticle-
item.openairetypeArticle-
item.fulltextWith Fulltext-
item.grantfulltextopen-
item.creatorGNDNagula, Sparsha Sinduri-
item.creatorGNDHwang, Yu-Wei-
item.creatorGNDDashti, Shideh-
item.creatorGNDGrabe, Jürgen-
item.languageiso639-1en-
crisitem.funder.funderid501100001655-
crisitem.funder.funderrorid039djdh30-
crisitem.author.deptGeotechnik und Baubetrieb B-5-
crisitem.author.deptGeotechnik und Baubetrieb B-5-
crisitem.author.orcid0000-0002-1645-2103-
crisitem.author.orcid0000-0002-7188-4208-
crisitem.author.orcid0000-0001-8112-7131-
crisitem.author.parentorgStudiendekanat Bauwesen-
crisitem.author.parentorgStudiendekanat Bauwesen-
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