Learning objectives
Knowledge and understanding:
Knowledge of the mechanical behavior of concrete structures and theoretical models to describe them.
Knowledge of code rules (Euroceode2) for the design of reinforced concrete structures. Knowledge of the detailing and arrangement of reinforcement in the main structural elements.
Skills:
Ability to choose, arrange and pre-design the different structural elements that constitute a simple reinforced concrete building. Ability to draw the reinforcements.
Making judgments:
The student must be able to choose and set the proper dimensions of structural elements
Communication skills:
During the course the student should improve his technical dictionary.
Learning skills:
The student must acquire the ability to select the most appropriate design choices also considering options that are not perfectly identical to those given during the course. He will also be able to consult the main reference books of the field
Prerequisites
There are no mandatory propedeuticities. Anyway, basic concepts on stress analysis and strength of materials, are required.
In particular, the following topics are used during the course:
statically determinate beams and cantilevers, trusses, stresses in a beam, principle of virtual works, analysis of loads, bending and shear in RC beams
Course unit content
Theoretical aspects and practice for the design of reinforced concrete structures (buildings, infrastructures, etc.). The topics are the ones contained in the Eurocode 2 standard code.
The main topics are: torsion, serviceability limit states, prestressed concrete, strut and tie models, design of slabs, stairs.
Full programme
Numbers [] refer to recommended books
1) Biaxial bending and axial force. [2]
2) ULS for torsion. Behaviour of solid and thin-walled cross-section, variable angle truss mode, combined shear and torsion. [2]
3)Serviceability limit states. Control of stress. Cracking axial load and bending moment. Stabilized cracking and crack spacing. Tension stiffening. Control of cracking and evaluation of crack width. Bending moment-curvature diagram, checking deflection. [2]
4) Limit state of buckling: mechanical and geometrical non linearity of a column fixed at the base and equations; study of the isolated column using the methods described by Eurocode 2 (nominal curvature, nominal stiffness). Stability of frames by means of general method and P-Delta method [2,5]
5) Creep and shrinkage: behavior of concrete over time, superposition in time, AAEM method, stress distribution in columns, prestressed beams and composite beams, time behavior of continuous beams, isomorphism theorems. [7]
6) Prestress: prestressing cables pre-tensioned and post-tensioned, external prestressing, equivalent actions. Resolution of statically indeterminate beams prestressed cable, concurring.
Loss of prestressing: release of the strands, friction, return of anchors, shrinkage, creep, relaxation of prestressing steel. [6,3,12]
7) Structural Analysis: strut and tie models for the design of corbels, walls, nodes, beam-column joints. [3]
8) Structural analysis: linear elastic analysis with and without redistribution, plastic analysis, nonlinear analysis, [3]
9) Plates: fundamentals of design and arrangement of reinforcement, punching. [11]
10) Foundations: footings [9]
11) Design of stairs and balconies [10]
12) Detailing, minimum and maximum reinforcement, concrete covers, durability [2]
13) Sostenibilita'delle strutture in c.a. e uso di materiali innovativi
Bibliography
Slides, excel files, movies shown during the course are available on the platform Elly.
Adopted reference books
[1] UNI-EN 1992-1-1:2005, "Eurocodice 2- Progettazione delle strutture in calcestruzzo - Parte 1-1: Regole generali e regole per gli edifici", 2005.
[2] Cosenza, Manfredi, Pecce, Strutture in cemento armato. Basi della progettazione, Hoepli, 2008
[3] Angotti, Marro, Giglia, Orlando, Progetto delle strutture in calcestruzzo armato con l'Eurocodice UNI-EN 1992-1-1 e le Norme Tecniche per le Costruzioni, Hoepli, 2011
The lectures are extracted from the following books, available in the library and referred to in the list of topics of the course
[4] Wight, MacGregor “Reinforced Concrete. Mechanics and Design”, Pearson
[5] D. Ferretti , I. Iori, M. Morini " La stabilita`delle strutture: il caso delle costruzioni in cemento armato", McGraw-Hill Italia, 2002.
[6] E.F. Radogna "Tecnica delle costruzioni ", vol.2 , Zanichelli, 2000.
[7] R. Favre et al., Progettare in calcestruzzo armato : piastre, muri, pilastri e fondazioni , Milano, Hoepli, 1994.
[8] Aicap, "Guida all'uso dell'Eurocodice 2", vol.1, AICAP, Roma, Edizioni Pubblicemento, 2006. http://www.progettoulisse.it/pubblicazioni.php
[9]R. Lancellotta, J. Calavera, "Fondazioni", Mc Graw-Hill, 2003
[10] A. Migliacci, "Progetti di strutture", CEA, 1991
[11] Gambarova, Coronelli, Bamonte, Linee guida per la progettazione delle piastre in c.a., Patron, 2008
[12] Mezzina, Fondamenti di Tecnica delle Costruzioni, Citta' Studi Edizioni, 2013
Teaching methods
The course consists of a series of frontal lessons, also with the help of Powerpoint presentations, and reviews of the project. The lectures will take place in the classroom.
During the course, some seminars with external lecturers may be organized, to study more deeply specific issues.
Assessment methods and criteria
Oral examination with one exercise and two theoretical questions.
The exercise is similar to the ones available in the website Elly, but the solution is literal and not numerical . The two theoretical questions will cover all the topics of the course
The mark of the course depends on
Knowledge of the topics of the course (40%);
Ability to solve an exercise similar to the one explained during the class (50%)
Communication skills (10%)
Other information
2030 agenda goals for sustainable development
9 - Industry, innovation and infrastructure
12 Responsible Consumption and Production
13 - Acting for the climate
