000021633 001__ 21633
000021633 005__ 20170622131257.0
000021633 04107 $$aeng
000021633 046__ $$k2017-06-15
000021633 100__ $$aMishra, Mayank
000021633 24500 $$aLANDSLIDE-PILE-TUNNEL INTERACTION BY 2D AND 3D FINITE ELEMENT MODELLING

000021633 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021633 260__ $$bNational Technical University of Athens, 2017
000021633 506__ $$arestricted
000021633 520__ $$2eng$$aThis paper is focused on the interaction of a railway tunnel with a slow-moving landslide in clay soil. The tunnel, built as a reinforced concrete box structure protected by sheet-piled walls, crosses the accumulation of an earthflow situated at the eastern suburbs of Potenza city, in southern Italy. The landslide develops in the formation of Varicoloured Clays and, due to its very slow but continuous displacements, induces progressive damage to structures and infrastructures built on it. As for the tunnel, there are signs suggesting an evolution of its state of stress and deformation over the last 30 years. The study of the landslide-piletunnel interaction required sophisticated FEM analyses to adequately take into account all the involved elements and the real 3D nature of the problem. Analyses were carried out by FEM geotechnical and structural software. Some results selected from a comprehensive numerical study are hereby reported and discussed. A geotechnical software was used in its 2D and 3D versions to obtain the spatial distribution of earth pressure on the tunnel owing to soil movements. The interaction was confirmed to be strongly 3-dimensional, with more evident displacements and bending of the tunnel box concentrated at one end. As a matter of fact, the movements of the landslide seem to make the structure open in horizontal, like a fan. The structural analysis made by applying the above mentioned pressure values confirmed which are the most stressed sections of the tunnel, giving a useful information toward the provision of possible interventions aimed to lengthen the life span of the tunnel.

000021633 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021633 653__ $$aLandslide, Tunnel, Earth thrust, Slope stability, Soil-structure interaction.

000021633 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021633 720__ $$aMishra, Mayank$$iMasi, Angelo$$iSantarsiero, Giuseppe$$iVassallo, Roberto
000021633 8560_ $$ffischerc@itam.cas.cz
000021633 8564_ $$s5498165$$uhttps://invenio.itam.cas.cz/record/21633/files/17314.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS22] Soil-structure interaction
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000021633 962__ $$r21500
000021633 980__ $$aPAPER