000021519 001__ 21519
000021519 005__ 20170622131250.0
000021519 04107 $$aeng
000021519 046__ $$k2017-06-15
000021519 100__ $$aAbate, Glenda
000021519 24500 $$aLARGE SCALE SOIL-FOUNDATION-STRUCTURE MODEL IN GREECE: DYNAMIC TESTS VS FEM SIMULATION

000021519 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021519 260__ $$bNational Technical University of Athens, 2017
000021519 506__ $$arestricted
000021519 520__ $$2eng$$aThis paper provides the results of FEM simulation of dynamic tests recently performed in Thessaloniki on a large-scale single-degree-of-freedom structure resting on a soft soil. The structure (named EuroProteas) was specifically designed to mobilize strong soilstructure interaction (SSI), being a particularly stiff structure founded on soft soil. It consists of a simple steel frame with removable X-bracings founded on a RC slab and supporting the superstructure mass of two RC slabs identical to the foundation slab. It is a totally symmetric structure. Subsoil stratigraphy and dynamic properties of the foundation soil are derived from extended geotechnical and geophysical surveys, including static and dynamic in-situ and laboratory tests. Extensive free- and forced-vibration tests were performed. This paper deals with one set of forced-vibration tests. An eccentric mass shaker was used as a source of harmonic excitation (f input = 3, 4.5, 5, 7 Hz and eccentricity 6.93kg-m) imposed on the roof of the structure. The structural response is recorded by seven accelerometers, five of which are located at the top of the roof slab and two at the top of the foundation slab. Soil response is recorded with seismometers installed on the free soil surface in both horizontal directions. Dynamic FEM modelling of the tests were conducted in the time and frequency domains in order to detect the main aspects of SSI, taking into account soil nonlinearity. Numerical and experimental results were extensively compared. Very interesting results were reached above all in terms of the effects of soil-foundation interface behaviour.

000021519 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021519 653__ $$aSoil-structure interaction, soil non-linearity, soil-foundation interface behaviour

000021519 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021519 720__ $$aAbate, Glenda$$iPitilakis, Dimitris$$iMassimino, Maria Rossella$$iGatto, Michele
000021519 8560_ $$ffischerc@itam.cas.cz
000021519 8564_ $$s2007804$$uhttps://invenio.itam.cas.cz/record/21519/files/16830.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS16] Instrumentation of structures and SSI systems under dynamic excitations
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000021519 962__ $$r21500
000021519 980__ $$aPAPER