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Dipartimento di Ingegneria Meccanica e Strutturale Facoltà di Ingegneria Ph.D student: Eng. Fabio Ferrario Analysis and modelling of the seismic behaviour of high ductility steel-concrete composite structures Tutor: Prof. Eng. Oreste S. Bursi Cotutor: Prof. Eng. André Plumier Febbraio 2004 Università degli Studi di Trento Università degli Studi di Brescia Università degli Studi di Padova Università degli Studi di Trieste Università degli Studi di Udine Istituto Universitario di Architettur
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  Febbraio 200 4  Ph.D student: Eng. Fabio Ferrario Dipartimento di Ingegneria Meccanica e StrutturaleFacoltà di Ingegneria  Analysis and modelling of the seismic behaviour of high d u ctility steel-concrete composite structures   Tutor: Prof. Eng. Oreste S. Bursi Cotutor: Prof. Eng. André Plumier    Università degli Studi di Trento Università degli Studi di Brescia Università degli Studi di Padova Università degli Studi di Trieste Università degli Studi di Udine Istituto Universitario di Architettura di Venezia Ph.D. student: Eng. Fabio Ferrario ANALYSIS AND MODELLING OF THE SEISMIC BEHAVIOUR OF HIGH DUCTILITY STEEL-CONCRETE COMPOSITE STRUCTURES Tutor: Prof. Eng. Oreste S. Bursi Co-tutor: Prof. Eng. André Plumier February 2004    UNIVERSITÀ DEGLI STUDI DI TRENTO Dottorato di Ricerca in Modellazione, Conservazione e Controllo delle Strutture (XVI ciclo) Prof. Oreste S. Bursi Analysis and Modelling of the Seismic Behaviour of High Ductility Steel-Concrete Composite Structures Fabio Ferrario Department of Mechanical and Structural Engineering Via Mesiano 77 - 38050 University of Trento - ITALY Phone number: +39 0461 882572 Fax number: +39 0461 882567 E-mail: fabio.ferrario@ing.unitn.it Esame finale: 4 marzo 2004 Commissione esaminatrice: Prof. André Plumier, Université de Liège; Belgium Prof. Oreste S. Bursi, Università degli Studi di Trento, Italia Prof. Alessandro De Stefano, Università degli Studi di Torino, Italia    Analysis and Modelling of the Seismic Behaviour of High Ductility Steel-Concrete Composite Structures Fabio Ferrario Department of Mechanical and Structural Engineering University of Trento Via Mesiano 77 – 38050 – ITALY Phone number: +39 0461 882572 Fax number: +39 0461 882567 E-mail: fabio.ferrario@ing.unitn.it ABSTRACT In this thesis theoretical, experimental and numerical aspects and applications concerning the seismic behaviour of high ductility steel-concrete composite structure are analysed. The interest has been focused on the capability of framed structures to dissipate seismic energy by means of inelastic deformations. The basic design parameter in this approach is the ductility   that should be considered as a conceptual framework in the Performance-Base Seismic Engineering (PBSE). PBSE has been developed encompassing the full range of seismic engineering issues to be referred to design of structures for predictable and controlled seismic performance within established levels of risk. The attention has been focalised on different solutions of steel and steel-concrete composite beam-to-column joints assuring the necessary ductility that can be obtained not only through careful study of building morphology, structural schemes and construction details, but also through the rational use of materials. Three specific and related topics have been analyzed and detailed analyses and experimental tests on substructures have been performed in order to ensure large inelastic deformations and the necessary energy dissipation under earthquake strong motion. The results aiming at qualifying the dissipative and rotational capacities of a particular typology of beam-to-column joints are then illustrated and discussed. The objective of this study is to provide designers with precise rules regarding constructional solutions suitable to each scheme and to the associated design methodologies necessary for evaluating their performances. Keywords: Low-cycle fatigue, ductility, innovative beam-to-column joint design, life-safe condition.  
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