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Evaluation of dynamic behavior of varved clays from the Warsaw ice-dammed lake, Poland

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dc.abstract.enSoil stiffness degradation due to dynamic loading may result in damage to engineering structures. Therefore, dynamic soil properties gained importance in recent years in the areas where vibrations of different origins are transmitted to the ground. The aim of the study was to determine the stiffness properties of the Warsaw varved clay (central Poland), as a measure of its response to dynamic loading. A set of triaxial tests were conducted. Undisturbed samples were subjected to initial deviator stress of 100 kPa, reflecting vertical stress due to construction load, and then to three dynamic stages under axial displacement control conditions. Secant shear modulus G was adopted as a parameter of soil stiffness during dynamic loading. Main methodological result of the study is application of coefficient α (gradient of logarithmic change in stiffness with time) indicating type of soil behavior under dynamic loading. Negative α values (ranging from −0.48 to −0.91) indicated a weakening effect of the applied vibrations (decrease in stiffness), while positive α values (ranging from 0.11 to 0.21) indicated soil strengthening (increase in stiffness). Results of the study may be applied to compare an impact of several factors influencing soil stiffness during dynamic loading
dc.affiliationUniwersytet Warszawski
dc.contributor.authorBĄKOWSKA, ANNA
dc.contributor.authorDobak, Paweł
dc.contributor.authorNielepkowicz, Krzysztof
dc.date.accessioned2024-01-24T23:38:10Z
dc.date.available2024-01-24T23:38:10Z
dc.date.issued2023
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.volume15
dc.identifier.doi10.1515/GEO-2022-0459
dc.identifier.issn2391-5447
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/106549
dc.identifier.weblinkhttps://www.degruyter.com/document/doi/10.1515/geo-2022-0459/xml
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofOpen Geosciences
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.envarved clays
dc.subject.enshear modulus
dc.subject.endynamic strengthening
dc.titleEvaluation of dynamic behavior of varved clays from the Warsaw ice-dammed lake, Poland
dc.typeJournalArticle
dspace.entity.typePublication