000013601 001__ 13601
000013601 005__ 20161114165848.0
000013601 04107 $$aeng
000013601 046__ $$k2011-05-25
000013601 100__ $$aPapadimitriou, C.
000013601 24500 $$aSystem Identification of a R/C Bridge Based on Ambient Vibrations and 3D Numerical Simulations of the Soil-Structure System

000013601 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013601 260__ $$bNational Technical University of Athens, 2011
000013601 506__ $$arestricted
000013601 520__ $$2eng$$aThe scope of this paper is to identify the parameters affecting the dynamic response of an existing R/C bridge, based on low ambient amplitude vibration measurements and numerical predictions using complex finite element models. For this purpose, the instrumented, 2nd Kavala Bypass Ravine Bridge constructed along the Egnatia Motorway Greece is studied and a refined three- dimensional (3D) FEM is developed that takes into consideration the coupling and dynamic interaction of the overall superstructure-foundationsoil and deck-abutment-embankment system. The instrumentation schemes and the necessary algorithms applied for computing the modal characteristics of the bridge are discussed, while the modelling assumptions made for the soil-structure system are comparatively assessed and justified for various models of different levels of complexity. Given the large number of the system’s degrees of freedom, a manual, modal-based FEM updating method is also presented. The results show good agreement between the measured and computationally predicted dynamic characteristics of the structure. They also show that the accurate estimation of the pier, deck and bearings stiffness is a key parameter for reliable system identification.

000013601 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013601 653__ $$asystem identification, model updating, ambient vibrations, soil-structure interaction, 3D finite element modeling, computational dynamics.

000013601 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013601 720__ $$aPapadimitriou, C.$$iSextos, A.$$iFaraonis, P.$$iPanetsos, P.
000013601 8560_ $$ffischerc@itam.cas.cz
000013601 8564_ $$s809140$$uhttps://invenio.itam.cas.cz/record/13601/files/356.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 12 Identification Methods in Structural Dynamics.
000013601 962__ $$r13401
000013601 980__ $$aPAPER