Naslov
Determining G-γ Degradation Curve in Cohesive Soils by Dilatometer and in situ Seismic Tests

Autori
Ivandić, Krešo ; Špiranec, Miljenko ; Kavur, Boris ; Strelec, Stjepan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
World Academy of Science, Engineering and Technology International Journal of Geotechnical and Geological Engineering / - Barcelona : WASET, 2018, 144-151

Skup
20th International Conference on Computational Geomechanics and Computational Modeling

Mjesto i datum
Barcelona, Španjolska, 27.02.2018. - 28.02.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Dilatometer testing, MASW testing, shear wave, soil stiffness, stiffness reduction, shear strain

Sažetak
This article discusses the possibility of using dilatometer tests (DMT) together with in situ seismic tests (MASW) in order to get the shape of G-y degradation curve in cohesive soils (clay, silty clay, silt, clayey silt and sandy silt). MASW test provides the small soil stiffness (Go from vs) at very small strains and DMT provides the stiffness of the soil at ‘work strains’ (MDMT). At different test locations, dilatometer shear stiffness of the soil has been determined by the theory of elasticity. Dilatometer shear stiffness has been compared with the theoretical G-g degradation curve in order to determine the typical range of shear deformation for different types of cohesive soil. The analysis also includes factors that influence the shape of the degradation curve (G-y) and dilatometer modulus (MDMT), such as the over consolidation ratio (OCR), plasticity index (IP) and the vertical effective stress in the soil. Parametric study in this article defines the range of shear strain gDMT and GDMT/Go relation depending on the classification of a cohesive soil (clay, silty clay, clayey silt, silt and sandy silt), function of density (loose, medium dense and dense) and the stiffness of the soil (soft, medium hard and hard). The article illustrates the potential of using MASW and DMT to obtain G-y degradation curve in cohesive soils.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika, Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo

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