Building engineering and architecture

The course will cover the following main aspects: • Concept of Seismic Risk, given by the combination of Vulnerability and Hazard • Discussion and overview of historical development in the know-how of Earthquake Engineering and Seismic Design with practical reference to past earthquakes • Development of key concepts learnt within Structural Design courses (i.e. Limit State Design and Non linear section analysis, moment-curvature) and integration with the fundamentals of Dynamic of Structures (covered in the first semester) to introduce and better understand the non-linear dynamic and cyclic behaviour of structure, as basis for Seismic Design. • Overview of key and most common structural weaknesses and associated anticipated behaviour/response of existing reinforced concrete buildings. Reference will be given to experimental tests, analytical/numerical studies and the recent lessons learnt from post-earthquake building inspections and investigations. • Discussion on main features and approaches of alternative seismic assessment procedures, with reference to existing national and international literature. • SLaMA (Simplified Lateral Mechanism Analysis) Analytical procedure for the vulnerability assessment of existing buildings, evaluation of the hierarchy of strength at local and global level and force-displacement capacity curves (pushover “by hand) • Introduction to Performance-Based Retrofit Strategies and alternative solutions/techniques. • Feasibility and efficiency of adopting and/or combining different solutions such as Fibre Reinforced Polymers, low-invasive low-cost metallic diagonal haunches, (post-tensioning or traditional) wall systems and selective weakening techniques, base isolation and dissipative braces • Principles and Structural Details in current seismic design approach, to avoid and limit the aforementioned critical vulnerabilities

Basic knowledge and competence on Structural Design and Earthquake Engineering are required to form the basis for the evaluation of the capacity (force/moment vs. curvature/rotation) of structural elements.

Le dispense delle lezioni verranno fornite in .pdf. Durante il corso verranno inoltre forniti in forma elettronica, tramite cartella condivisa di DropBox, Google Drive o simili) articoli, pubblicazioni, linee guida ed in generale materiale di lettura consigliati. Di seguito a titolo indicativo ed non esaustivo si indicano alcune letture suggerite relative ad alcune linee guida/testi nazionali ed internazionali di rilievo che trattano la valutazione della vulnerabilità e le tecniche di intervento di rinforzo. ASCE 41-13, Seismic Evaluation and Retrofit of Existing Buildings, American Society of Civil Engineers and Structural Engineering Institute (ASCE and SEI), Reston, Virginia, USA. EN 1998-3, Eurocode 8: Design of Structures for Earthquake Resistance, in Part 3: Assessment and Retrofitting of Buildings, European Committee for Standardization (CEN), Updated in 2005 FEMA 273, 1997, Guidelines to the Seismic Rehabilitation of Existing Buildings, Federal Emergency Management Agency, Washington, D.C FEMA 274, 1997, NEHRP Commentary on the Guidelines for the Seismic Rehabilitation of Buildings, Federal Emergency Management Agency, Washington, D.C fib, 2003, Seismic Assessment and Retrofit of Reinforced Concrete Buildings: State-of-the-art report. Bulletin 24, fib Task Group 7.1, International Federation for Structural Concrete (fib), Lausanne, Switzerland. NTC 2018, Norme tecniche per le costruzioni, (Code Standard for Constructions), In Italian, Ministry of onfrastructures and Transport, MIT, Rome NZSEE 2017, The Seismic Assessment of Existing Buildings (the Guidelines), New Zealand Society of Earthquake Engineering, Wellington, Version October 2016, http://www.eq-assess.org.nz/