000013085 001__ 13085
000013085 005__ 20161114160326.0
000013085 04107 $$aeng
000013085 046__ $$k2009-06-22
000013085 100__ $$aTerzi V., G.
000013085 24500 $$aExperimental and numerical analysis of the dynamic characteristics of a bridge pier model

000013085 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013085 260__ $$bNational Technical University of Athens, 2009
000013085 506__ $$arestricted
000013085 520__ $$2eng$$aFree vibration in situ experiments on a bridge pier model structure have been performed in the framework of the European research project EUROSEISRISK, EVG1-CT-200100040). The aim of the paper is to model numerically the pier response and to compare the numerical response with the experimental one. The evaluation of the dynamic characteristics of the soil-foundation-pier system in terms of various inertial and stiffness configurations is the main goal of the present work. The surface ground motion and the foundation –pier response have been recorded by numerous sensors. The exponential decay of the time histories recorded provide the damping of the system whereas the study of the time histories in the frequency domain,, provides the value of the frequency that dominates the motion, which is equal with the translational eigenfrequency of the model. Taking into account the linear elastic behavior of the soil-foundation-superstructure system, modal analysis is suitable for the investigation of the bridge pier model characteristics in terms of eigenfrequencies. The numerical modeling highlights additional information concerning the torsional mode of vibration. A set of tendons connecting the foundation with the superstructure is an additional factor affecting the dynamic characteristics and the presence of the torsional and translational on the strong axis mode of vibration. Based on the very good comparison between the numerical and experimental results, we further investigated the role of the SSI on the structure’s eigenfrequencies.

000013085 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013085 653__ $$aexperiment, free vibration, numerical modeling, soil structure interaction. Abstract. Free vibration in situ experiments on a bridge pier model structure have been performed in the framework of the European research project EUROSEISRISK, EVG1-CT-200100040). The aim of the paper is to model numerically the pier response and to compare the numerical response with the experimental one. The evaluation of the dynamic characteristics of the soil-foundation-pier system in terms of various inertial and stiffness configurations is the main goal of the present work. The surface ground motion and the foundation –pier response have been recorded by numerous sensors. The exponential decay of the time histories recorded provide the damping of the system whereas the study of the time histories in the frequency domain,, provides the value of the frequency that dominates the motion, which is equal with the translational eigenfrequency of the model. Taking into account the linear elastic behavior of the soil-foundation-superstructure system, modal analysis is suitable for the investigation of the bridge pier model characteristics in terms of eigenfrequencies. The numerical modeling highlights additional information concerning the torsional mode of vibration. A set of tendons connecting the foundation with the superstructure is an additional factor affecting the dynamic characteristics and the presence of the torsional and translational on the strong axis mode of vibration. Based on the very good comparison between the numerical and experimental results, we further investigated the role of the SSI on the structure’s eigenfrequencies.

000013085 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013085 720__ $$aTerzi V., G.$$iPitilakis, K.
000013085 8560_ $$ffischerc@itam.cas.cz
000013085 8564_ $$s514813$$uhttps://invenio.itam.cas.cz/record/13085/files/CD111.pdf$$yOriginal version of the author's contribution as presented on CD, section: Advances in structural vibrations - i (MS).
000013085 962__ $$r13074
000013085 980__ $$aPAPER