75428 - HISTORIC MASONRY AND WOOD STRUCTURES M

Scheda insegnamento

SDGs

L'insegnamento contribuisce al perseguimento degli Obiettivi di Sviluppo Sostenibile dell'Agenda 2030 dell'ONU.

Città e comunità sostenibili

Anno Accademico 2019/2020

Conoscenze e abilità da conseguire

Al termine del corso lo studente conosce i fondamenti dell’analisi di strutture edilizie storiche in muratura e in legno, inclusa lo conoscenza degli aspetti teorici, degli strumenti numerici e sperimentali necessari per la diagnosi efficace di strutture storiche, finalizzata alla loro conservazione o riabilitazione. In particolare, al termine del, corso lo studente è in grado di identificare i più rilevanti fenomeni relativi al collasso, di progettare opere provvisionali e puntellamenti, di concepire soluzioni per il rinforzo strutturale di edifici storici.

Programma/Contenuti

1. Plastic Analysis

  1. Incremental method to determine the collapse load of statically indeterminate structures

  2. Application of the kinematic and static theorems to determine the collapse load of statically indeterminate structures

     

2. Fundamentals of Fracture Mechanics

  1. Linear elastic fracture mechanics: stress intensity factor and energy release rate

  2. Quasi-brittle materials: the cohesive model

     

3. Masonry Strength and Deformability

  1. Tests on mortar and brick (natural and artificial stone) specimens

  2. Formulation of a triaxial failure criterion for stones

  3. Masonry compression strength

  4. Masonry tensile strength

  5. Masonry deformation

     

4. Statics of Masonry Solids and Structures

  1. No-tension masonry models

  2. The masonry continuum: equilibrium and compatibility

  3. Mechanism and collapse states

     

5. Arches and Vaulted Structures

  1. Masonry arches: Line of thrust and limit analysis

  2. Domes: membrane state, cracking patterns, brief description of some famous cases

  3. Barrel, polygonal, and cross vaults: membrane state, cracking patterns, brief description of some famous cases

  4. Exercises on collapse mechanisms of arches

     

6. Piers, Towers, and Gothic Cathedrals

  1. Piers: Compression strength under eccentric loading

  2. Towers: typical cracking patterns

  3. Cathedrals: Historical notes, construction techniques, relevant static problems

     

7. Timber Properties

  1. Material anisotropy

  2. Moisture and long duration effects

  3. Effects of timber properties on structural analysis and detailing

     

8.  Timber Structures

  1. Structural typologies of wooden floors, ceilings, and roofs recurring in Italian, European and Asiatic historical buildings

  2. Historical timber buildings

  3. Review of loading formulation: static and seismic loading

  4. Design standards for timber structures

  5. Static design concepts within the limit design approach

  6. Design of structural members: beam, floor diaphragms, trusses

     

9.  Timber joints

  1. Overview on traditional carpenter connections

  2. Mechanical fastener systems

  3. Design of timber joints and typological details

     

10.Diagnosis and damage analyses of wood structures

  1. Visual and instrumental inspection techniques and reference standards

  2. Methods for the classification of grade and essence of existing wooden members according to current code guidelines

  3. Damage analysis techniques of existing wooden members, carpenter joints and connections

 

Testi/Bibliografia

 

Instructors' hand-outs (available on the IOL web site).

Fracture and Size Effect (in concrete and other quasibrittle materials), Z.P. Bazant, J. Planas, CRC Press, 1998

Statics of Historic Masonry Constructions. M. Como, Springer, 2013.

The Stone Skeleton, J. Heyman, Cambridge University Press, 1995.

The Construction of Gothic Cathedrals, J. Fitchen , The University of Chicago Press, 1961.

Plasticity Theory, J. Lubliner, Dover Edition, 2008.

EN 1995-1-1 (2004) (English): Eurocode 5: Design of timber structures - Part 1-1: General - Common rules and rules for buildings

Structural Timber Design to Eurocode 5, Jack Porteous, Abdy Kermani Edited by John Wiley & Sons, 2008 ISBN 047069792X

Structural Timber Design, Abdy Kermani Wiley-Blackwell; 1 edition (December 11, 1998) ISBN: 0632050918

Metodi didattici

The course content will be entirely covered by lectures. The course includes invited keynote lectures, which will help cover some practical aspects of the lectures. The instructors will supervise students during all activities.

Modalità di verifica dell'apprendimento

A full comprehensive final (written + oral) exam will be used to assess the knowledge and understanding of the topics covered in the course. In addition, two projects will be assigned. Both projects are related to section 5 of the course content.

Strumenti a supporto della didattica

The teaching tools are overhead projector, projector and PC. The course includes some laboratory sessions in which structural analysis software is used. In addition, a model of an arch (which is part of one of the projects) will be constructed in the wood and model laboratory.

Orario di ricevimento

Consulta il sito web di Giovanni Castellazzi

Consulta il sito web di Diego Alejandro Talledo