000022160 001__ 22160
000022160 005__ 20170622145959.0
000022160 04107 $$aeng
000022160 046__ $$k2015-05-25
000022160 100__ $$aLopes, P.
000022160 24500 $$aVIBRATIONS IN BUILDINGS DUE TO RAILWAY TRAFFIC IN TUNNELS: MODELLING STRATEGIES AND INFLUENCE OF SOIL STIFFNESS

000022160 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022160 260__ $$bNational Technical University of Athens, 2015
000022160 506__ $$arestricted
000022160 520__ $$2eng$$aIn this paper a numerical study about the influence of soil stiffness on the assessment of vibrations induced by railway traffic in tunnels is performed. A comprehensive numerical model is used to achieve the lumped objective, where the source of vibration (traintrack interaction), the propagation of vibrations (tunnel-ground system) and their reception (building close to the railway infrastructure) are simulated by a sub-structuring approach. It was found that the soil stiffness plays a relevant role on the mechanisms of propagation of vibrations through the ground as well as on the soil-structure interaction. Regarding the last topic, different approaches were attended for the inclusion of the SSI effects, namely a detailed boundary elements formulation and a simplified lumped-parameter model. The study performed revealed that the usage of lumped parameter models can be faced as a good option taking into account the compromise between accuracy of the solution and reduction of the computation effort.

000022160 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022160 653__ $$aRailway vibrations in tunnels, Soil-structure interaction, 2.5D FEM-PML

000022160 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022160 720__ $$aLopes, P.$$iCardoso, A.$$iCalçada, R.$$iCosta, P. Alves
000022160 8560_ $$ffischerc@itam.cas.cz
000022160 8564_ $$s1253409$$uhttps://invenio.itam.cas.cz/record/22160/files/C1360.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
.
000022160 962__ $$r22030
000022160 980__ $$aPAPER