PERIOD: The basic principle of conventional earthquake-resistant design is to ensure an acceptable safety level while avoiding catastrophic failures and loss of life. When a structure does not collapse during a major earthquake, and the occupants can evacuate safely, it is considered that this structure has fulfilled its function even though it may never be functional again. Generally, this approach can be considered adequate for most types of structures. However for important structures, more resilient methods are required, while keeping economic factors in mind. For example, avoiding collapse is not sufficient for facilities that must remain functional immediately after an earthquake: hospitals, police stations, communication centers, and so on in order to insure that a resilient community recovers quickly. Over the last 20 years, a large amount of research has been conducting into developing innovative earthquake-resistant systems in order to raise the resilience level while keeping construction costs reasonable. Most of these systems are intended to dissipate the seismic energy introduced into the structure by supplemental damping mechanisms and/or to isolate the main structural elements from receiving this energy through isolation systems. The main objective of the course is to familiarize Structural Engineers with the various innovative systems that have demonstrated considerable potential through analytical studies, experimental testing and actual structural implementation. The discussion will focus on passive energy dissipation systems and base isolation systems. At the end of the course, Structural Engineers should be able to: • Provide a critical comparison of various systems. • Model and design various systems with general structural engineering software. • Recommend optimum systems for particular seismic design or retrofit projects.

CLASS SCHEDULE • 10 lectures of 3 hours (30 hours total) TOPICS COVERED LECTURE 1: INTRODUCTION AND ENERGY CONCEPTS IN EARTHQUAKE ENGINEERING LECTURE 2: METALLIC AND FRICTION (HYSTERETIC) DAMPERS LECTURE 3: VISCOUS AND VISCOELASTIC DAMPERS LECTURE 4: SELF-CENTERING SYSTEMS LECTURE 5: SEISMIC ISOLATION SYSTEMS LECTURE 6: TUNED MASS DAMPERS LECTURE 7: SEISMIC GROUND MOTION SELECTION LECTURE 8: DESIGN OF TIMBER STRUCTURES IN SEISMIC ZONES LECTURE 9: RESILIENCE-BASED DESIGN LECTURE 10: APPLICATIONS OF FINITE ELEMENT SOFTWARES REQUIRED TEXT Christopoulos, C. and Filiatrault, A. 2006. “Principles of Passive Supplemental Damping and Seismic Isolation,” IUSS Press, University of Pavia, Italy, 2006. Cimellaro, G. P., and Marasco, S. (2018). Introduction to Dynamics of Structures and Earthquake Engineering, Springer, 3311 GX Dordrecht, The Netherland.

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Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.