- Docente: Nicola Buratti
- Crediti formativi: 9
- SSD: ICAR/09
- Lingua di insegnamento: Inglese
- Moduli: Nicola Buratti (Modulo 1) Nicola Buratti (Modulo 2) Francesca Ferretti (Modulo 3)
- Modalità didattica: Convenzionale - Lezioni in presenza (Modulo 1) Convenzionale - Lezioni in presenza (Modulo 2) Convenzionale - Lezioni in presenza (Modulo 3)
- Campus: Ravenna
- Corso: Laurea Magistrale in Ingegneria dei processi e dei sistemi edilizi (cod. 8829)
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Orario delle lezioni (Modulo 1)
dal 27/09/2024 al 13/12/2024
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Orario delle lezioni (Modulo 2)
dal 18/11/2024 al 16/12/2024
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Orario delle lezioni (Modulo 3)
dal 20/09/2024 al 28/10/2024
Conoscenze e abilità da conseguire
At the end of the class, student has knowledge of the advanced concepts and tools for structural diagnosis, experimental testing and seismic assessment, with special attention for non-destructive techniques and in-situ structural assessment. In particular, at the end of the course he/she is able to assess historic structures, identify typical damage and conduct visual inspections, in situ investigation, non-destructive and slightly destructive techniques. In addition, he/she is able to carry out a seismic assessment, identify response spectrum analysis and damage and collapsing mechanisms in existing (particularly historical) structures.
Contenuti
The course comprises three modules:
· module 1 and 2 concern the seismic assessment of masonry structures (6 CFU in total), they will be referred to as Seismic Assessment in the following.
· module 3 concerns structural diagnostic methods for historic structures (3 CFU).
REQUIREMENTS
Fluent spoken and written English is a necessary prerequisite: all the lectures, tutorials, reference documents and presentations will be in English.
Prior knowledge of historical construction materials and their forms of decay as well as technology of historical constructions is required. Prior knowledge and understanding of structural mechanics and mechanics of masonry structures is required, too to attend this course. All such topics are covered in previous year courses and in parallel courses:
· Advanced Structural Mechanics M
· Historic Masonry and Wood Structures M.
CONTENTS OF THE MODULI ON SEISMIC ASSESSMENT (6 CFU)
1. ENGINEERING SEISMOLOGY
a. Tectonics, faults, faulting mechanisms, earthquake recurrence, elastic rebound theory, magnitude measures, earthquake energy.
b. Accelerograms: recording, properties, basic intensity measures. Soil and topographic effects.
2. STRUCTURAL DYNAMICS OF SDOF SYSTEMS
a. Un-damped free vibrations;
b. Damped free vibrations;
c. Forced vibrations;
d. Response to a base acceleration: Duhamel integral and time-stepping procedures (Newmark method etc.).
3. RESPONSE SPECTRA
a. Acceleration, displacement, velocity, pseudo-acceleration and pseudo-velocity response spectra;
b. Ductility and constant ductility spectra .
4. SEISMIC HAZARD
a. Uniform hazard spectra.
b. Seismic Risk
5. STRUCTURAL DYNAMICS OF MDOF STRUCTURES
a. Mass, stiffness and damping matrixes;
b. Modal analysis of 2D structures;
c. Free vibration;
d. Response to ground acceleration;
e. Maximum response analysis (response spectrum analysis).
f. Damping models;
g. Modal combination rules: SRSS, CQC;
h. Analysis of 3D structures. Effects of regularity.
6. SEISMIC DESIGN FUNDAMENTALS
a. Performance based design: Definition of limit states and performance levels.
b. Design response spectra: behaviour factor;
c. Linear analysis methods;
d. Definition of masses and combination of seismic effects with the effects of other loads;
e. Capacity design fundamentals.
7. DESIGN OF MASONRY STRUCTURES
a. Design criteria for unreinforced masonry structures
8. SEISMIC VULNERABILITY OF EXISTING STRUCTURES
a. Behaviour of masonry elements under lateral loads
b. Analysis methods
c. Local failure modes.
d. Seismic vulnerability analysis of masonry structures
CONTENTS OF MODULE ON STRUCTURAL DIAGNOSTICS (3 CFU)
- Classification of masonry typologies
- Damage mechanisms in existing masonry buildings
- Knowledge procedure for the vulnerability assessment of existing structures
- Mechanical characterization of masonry through on-site and laboratory tests
- Non-destructive tests
- Slightly-destructive tests
- Destructive tests
Testi/Bibliografia
- Thomas Paulay and M. J. N. Priestley, Seismic Design of Reinforced Concrete and Masonry Buildings
- V.M. Malhotra, N.J. Carino: “Handbook on Nondestructive Testing of Concrete”, CRC Press, USA, 2004.
- M.J. Sansalone, W.B. Street: “Impact-echo”, Bullbrier Press, Ithaca, N.Y., 1997. Giovanni Pascale, Diagnostica a ultrasuoni per l'edilizia: costruzioni civili, beni culturali, Ed. Flaccovio, 2008
Metodi didattici
Lectures supported by powerpoint presentations and use of blackboard will be alternated with lectures where learning methods include practical exercises and hands-on use of non-destructive equipment, lab demonstrations.
Modalità di verifica e valutazione dell'apprendimento
The final examination for the moduli on Seismic Assessment and for the modulus on Structural Diagnostics are independent. Students are allowed to take them in different sessions.
In each part, in order to obtain a passing grade, students are required to demonstrate a knowledge of the key concepts of the subjects, some ability for critical application, and a comprehensible use of technical language. A failing grade will be awarded if students show knowledge gaps in key-concepts of the subject, inappropriate use of language, and/or logic failures in the analysis of the subject. The final grade will be computed as the weighted average of the grades obtained in each part. o obtain a final passing grade, passing grades must be obtained in each of the two course parts (modules 1+2 and module 3).
Structural Diagnostics and Seismic Assessment M is part of the integrated course "LABORATORY OF STRUCTURAL DIAGNOSTICS AND REHABILITATION M C.I." (15 CFU). The final grad for the integrated course will be computed as the weighted average of the grades of Seismic Assessment (6 CFU), of Structural Diagnostics (3 CFU) and of Structural Strengthening and rehabilitation M (6 CFU). Structural Strengthening and rehabilitation M is given during the second semester.
Seismic Assessment grade and exam
The final exam for "Seismic Assessment" is a closed-book written examination. This exam is based on either two or three open questions/exercises, aimed at evaluating the knowledge of the key concepts discussed during the course as well as their critical understanding. The duration of the final exam is between 1 hour and 1.5 hours.
Structural Diagnostics examExam
Final Exam
The final exam for "Seismic Diagnostic" is a closed-book written examination. The exam is based on either two or three open questions, aimed at evaluating the knowledge of the key concepts discussed during the course as well as their critical understanding. The duration of the final exam is between 1 hour and 1.5 hours.
Strumenti a supporto della didattica
Oral lectures with powerpont presentations. Blackboard. Computer lab. Demonstrations. Lab visit. Site visits. Application examples.
Orario di ricevimento
Consulta il sito web di Nicola Buratti
Consulta il sito web di Francesca Ferretti
SDGs
L'insegnamento contribuisce al perseguimento degli Obiettivi di Sviluppo Sostenibile dell'Agenda 2030 dell'ONU.