Prestressed concrete structures

lgciv2032  2018-2019  Louvain-la-Neuve

Prestressed concrete structures
4 credits
20.0 h + 15.0 h
Q2
Teacher(s)
Cap Jean-François;
Language
French
Prerequisites
Very good knowledge in the following fields:
  • behaviour of structural materials, as taught in course LGCIV1031;
  • strength of material and structural mechanics, as taught in course LGCIV1022;
  • stability of constructions, as taught in LGCIV1023;
  • reinforced concrete structures, as taught in course LGCIV1032
Main themes
  • The properties of the materials (concrete and steel); prestressing and post-stressing techniques; forces equivalent to prestressing; the calculation of prestress losses; the calculation and design of prestressed concrete beams subjected to normal force, bending, shear force and torsion; pre-design methods; design of the anchoring zones, deflections.
  • These topics are addressed in the context of SLS design (elastic behaviour hypothesis) and ULS design (plastic behaviour hypothesis).
  • The calculation methods presented refer to the rules prescribed in current European standards (Eurocode 2).
Aims

At the end of this learning unit, the student is able to :

1

With reference to the AA reference framework of the "Master Civil Engineer of Constructions" program, this course contributes to the development, acquisition and evaluation of the following learning outcomes: AA1.1, AA1.2, AA1.3, AA2.1, AA2.2, AA2.3, AA2.4, AA3.1, AA5.3, AA5.4

More specifically, at the end of this course, the student will have acquired a theoretical and practical knowledge of the prestressed and post-stressed concrete structures design methods.

He/she will be able to design simple elements in prestressed concrete (beams, slabs, ...) according to the European standards (Eurocode 2).

This includes the design of concrete sections, prestress reinforcement and the drawing of formwork plans, reinforcement plans and the definition of tensioning steps.

He will be able to chose the various techniques of pre / post stressing.

He will also master the fundamental concepts of prestressed concrete theory that will allow him to address problems related to larger scale projects.

 

The contribution of this Teaching Unit to the development and command of the skills and learning outcomes of the programme(s) can be accessed at the end of this sheet, in the section entitled “Programmes/courses offering this Teaching Unit”.
Content
  • History of prestressed concrete
  • Principles of prestress
  • Field of application of prestressed concrete
  • Properties of steels
  • Prestressed systems
  • Loads equivalent to prestress
  • Load balancing and deformation compensation
  • Calculation of the prestress force
  • Calculation of stresses (Elastic field)
  • ULS design of bended beams
  • Shear strength of prestressed sections
  • Prestress losses
  • Pre-design of prestressed elements
  • Localized efforts: end zones of prestressed beams
Teaching methods
Ex-cathedra lectures with Powerpoint slides.
Workshops and exercices
Evaluation methods
The evaluation has two parts:
  • Open-book written examination with practical exercises related to the design of simple reinforced concrete structures (4h).
  • Oral exam with 'closed book' related to the theoretical concepts of the course.
The success of both parties is required.
Online resources
Available on Moodle : Powerpoint slides, Exercices.
Bibliography
  • Transparents du cours (syllabus) et formulaire EN 1992-1-1+ ANB ;
  • Norme NBN EN 1992-1-1 - Eurocode 2 : Calcul des structures en béton - Partie 1-1 : Règles générales et règles pour les bâtiments
  • René Walther, Manfred Miehlbradt.Dimensionnement des structures en béton - Traité de Génie Civil Volume 7 . Presses polytechniques et universitaires romandes.
  • R. Favre, J.-P. Jaccoud, O. Burdet, H. Charif. Dimensionnement des structures en béton - Traité de Génie Civil Volume 8 . Presses polytechniques et universitaires romandes.
Faculty or entity
GC


Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme
Sigle
Credits
Prerequisites
Aims
Master [120] in Civil Engineering

Master [120] in Architecture and Engineering