- Docente: Stefano Silvestri
- Credits: 3
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Bologna
-
Corso:
Second cycle degree programme (LM) in
Civil Engineering (cod. 0930)
Also valid for Second cycle degree programme (LM) in Civil Engineering (cod. 0930)
Learning outcomes
The student develops an individual design project of a simple r.c. precast-beam bridge. To this purpose, during the course, the design and dimensioning criteria of a girder bridge deck and of the corresponding substructures are studied; numerical and graphical applications are then required.
Course contents
1. THE
DESIGN OF A PRECAST-BEAM BRIDGE
Characteristics of the design project
Elements of road geometry
The transversal cross-section of the bridge deck
The crash barriers
2. DESIGN
CRITERIA OF THE BRIDGE DECK
The general approach of the design
The slab design
Simplified analysis for the transversal load
distribution
3.
PRESTRESSED CONCRETE STRUCTURES
History, development and general principles of prestressed
concrete structures
Prestressing technologies (bonded and unbounded tendons,
pre-tensioning and post-tensioning systems)
Codes
Determination of the internal forces
Flexure and shear
Loss of prestress
End anchorages and local verifications
4. THE
CALCULATION OF THE PRESTRESSED CONCRETE BEAMS
The loads
The stages of loading
Dimensioning and verification of the prestressed concrete
beams
5. BEARING
DEVICES AND DECK JOINTS
Classification of the bearing
Reinforced elastomeric bearings
Seismic devices
Joint typologies
6. THE
SUBSTRUCTURES
The piers
The abutments
7. LOADING
TESTS
Test setup
Deflection measurements
8. FATIGUE
VERIFICATIONS
General issues about fatigue strength of materials
fatigue verifications for steel and r.c. bridges
Load spectra by the codes
Applicative example with reference to a composite
steel-beam-and-slab bridge
Readings/Bibliography
TEXTBOOKS ON BRIDGE DESIGN
- G. Albenga, I ponti, Voll. I e II, Ed. UTET, Torino, 1953
- E. Siviero, Il progetto del ponte, Ed. Coll. Ingg. Prov. Padova,
Padova, 1994
- M.P. Petrangeli, Progettazione e costruzione di ponti, IV ed.,
Ed. Masson, Milano, 1997
- F.Martinez, Ponti e viadotti: concezione, progetto, analisi,
gestione, Ed. Pitagora, Bologna, 2000
- Autori vari, Nuovi orientamenti per la progettazione di ponti e
viadotti, Ed. Dario Flaccovio, Palermo, 2005
TEXTBOOKS ON PRESTRESSED REINFORCED CONCRETE STRUCTURES
- C. Cestelli Guidi, Cemento armato precompresso, Ed. Hoepli,
Milano, 1987
- F. Leonhardt, C.a. e c.a.p. Calcolo di progetto e tecniche
costruttive. I ponti, Ed. Tecniche Milano, Milano, 1979
- T.Y. Lin, N.H. Burns, “Design of prestressed concrete
structures", Wiley, 1982
- R. Walther, M.Miehlbradt, "Progettare in calcestruzzo armato",
Hoepli, 1990
- L. Santarella, "Il cemento armato", 22a ediz., Hoepli, 1998
- L. Goffi, P. Marro, "Appunti sul Cemento armato precompresso",
CLUT editrice, Torino, 1998
GENERAL TEXTBOOKS ON STRUCTURAL DESIGN
- O. Belluzzi, Scienza delle costruzioni, Vol. II, Ed. Zanichelli,
Bologna, 1966
- P. Pozzati, Teoria e tecnica delle strutture, Vol. I (1972) e
Vol. II (1977) Ed. UTET, Torino
- Autori vari, Manuale di Ingegneria Civile, Volume II, Ed.
Zanichelli/ ESAC, Bologna, 1991
Teaching methods
Frontal lessons mainly at the blackboard (occasional use of
Power-Point slides).
Numerical applicative examples at the blackboard.
Revision of the individidual design projects developed by the
students with the help of a tutor.
Assessment methods
Assessment of the individual design project (of a precast-beam
bridge) developed by the student.
This assessment consists in:
1. examination of the technical drawings
2. analysis of the technical report
3. calculation and design criteria and technical drawings of the
construtive details
The oral test is aimed at checking if the student is able to apply
the theoretical aspects in a specific applicative example of
bridge design.
Teaching tools
Possible lecture-notes supplied by the teacher.
Power-Point presentations.
Links to further information
http://www.unibo.it/docenti/stefano.silvestri
Office hours
See the website of Stefano Silvestri
SDGs
This teaching activity contributes to the achievement of the Sustainable Development Goals of the UN 2030 Agenda.