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A centrifuge-based experimental verification of Soil-Structure Interaction effects
Department of Civil, Environmental and Geomatic Engineering, ETH Zurich.
Department of Civil, Environmental and Geomatic Engineering, ETH Zurich.
Department of Civil, Environmental and Geomatic Engineering, ETH Zurich.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.ORCID-id: 0000-0003-1935-1743
2017 (Engelska)Ingår i: Soil Dynamics and Earthquake Engineering, ISSN 0267-7261, E-ISSN 1879-341X, Vol. 103, s. 1-14Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A series of prototype dynamic centrifuge experiments is carried out to investigate the influence of soil properties and structural parameters on the Soil Structure Interaction (SSI) effect. Established analytical models are herein experimentally verified, and are proven accurate in estimating the system's natural frequency characteristics. It is observed that period elongation is strongly correlated to the relative superstructure-foundation stiffness. Although the present study deals exclusively with the small-strain near-linear range, the experimental response indicates occurrence of nonlinearity. The identified damping results remarkably larger than its analytical estimate and proves highly strain-dependent, raising questions on the reliability of existing analytical methods in capturing the actual dissipation mechanisms. An extended experimental dataset is formed under realistic stress and strain soil conditions, and is implemented, for the first time, for verification of existing analytical models offering valuable insight into the theory and serving as a benchmark for engineering practice.

Ort, förlag, år, upplaga, sidor
Elsevier, 2017. Vol. 103, s. 1-14
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URN: urn:nbn:se:ltu:diva-65807DOI: 10.1016/j.soildyn.2017.09.005ISI: 000414825500001Scopus ID: 2-s2.0-85033393958OAI: oai:DiVA.org:ltu-65807DiVA, id: diva2:1144048
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Validerad;2017;Nivå 2;2017-09-25 (andbra)

Tillgänglig från: 2017-09-25 Skapad: 2017-09-25 Senast uppdaterad: 2017-11-24Bibliografiskt granskad

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