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dc.contributor.authorDE RISI Ren_GB
dc.contributor.authorDI SARNO Luigien_GB
dc.contributor.authorDELLA CORTE Gen_GB
dc.contributor.authorPAOLACCI Fabrizioen_GB
dc.contributor.authorMARIONI Agostinoen_GB
dc.contributor.authorTAUCER Fabioen_GB
dc.identifier.citationXIV Convegno ANIDIS "L'Ingegneria Sismica in Italia"en_GB
dc.description.abstractThis paper presents the preliminary results of a study which carried out within the RETRO research project. RETRO is the acronym of “Assessment of the seismic vulnerability of an old Reinforced concrete viaduct with portal frame piers and study of the Effectiveness of different isolation systems through Pseudo-dynamic Tests on a large scale model”. The project was funded by the 7th FP of the European Commission within the SERIES Network. It aims at studying the seismic behaviour of existing RC bridges and the effectiveness of innovative retrofitting systems. The seismic vulnerability of an old Italian viaduct with portal frame piers incorporating plain steel bars is evaluated; the sample structure is vulnerable to earthquake loading and an adequate isolation system is designed. The work is subdivided in two parts: the present paper is devoted to the analysis of the “isolated” configuration whereas the first part, provided in a companion paper, shows the results of the “as-built” case. Friction pendulum systems (FPSs) were utilized as isolation devices for the bridge continuous deck. The outcomes of the study confirm that FPS is an effective system to reduce the maximum seismic demand on existing structures. However the choice of the devices should comply with existing structural details, chiefly expansion joints. It may result of paramount importance to modify the boundary conditions of some viaducts, e.g. adopting a continuous bridge deck system, before base isolation is applieden_GB
dc.description.sponsorshipJRC.G.5-European laboratory for structural assessmenten_GB
dc.publisherItalian National Association of Earthquake Engineeringen_GB
dc.titleSeismic analysis and retrofitting of an existing RC highway bridge Part II: Analysis of the isolated bridgeen_GB
dc.typeArticles in periodicals and booksen_GB
JRC Directorate:Space, Security and Migration

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