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| GCIV2033-2 | Steel, concrete, timber and composite steel-concrete construction
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| Duration : | 60h Th, 60h Pr, 2d FW |
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| Number of credits : |
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| Lecturer : | Jean‑François Demonceau, Jean‑Marc Franssen, Jean‑Pierre Jaspart, N... |
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| Substitute(s) : | François Kaiser |
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Language(s) of instruction :
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| French language |
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Course contents :
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| COMPOSITE CONSTRUCTIONS:
A structural element of a construction is defined as composite if it is associating two materials of different nature and/or with different properties. The objective with a composite construction is to extract, from a mechanical point of view, the best contributions from the materials involved in this association. The most usual case in composite construction is the one associating steel and concrete. This is this type of composite construction which is considered within this course.
The concrete and the steel, materials fundamentally different, are perfectly compatible and complementary. They constitute a perfect combination from the resistance point of view: concrete is very efficient to sustain compression while steel is substituted to concrete to sustain tension. Concrete also ensures a protection against corrosion and a thermal insulation for steel at elevated temperature. Moreover, it can stiffen slender sections for instability phenomena which may occur in elements partially or totally under compression.
The actual practice in Europe demonstrates clearly that the composite construction can be competitive, in terms of global cost, if compared to « classical » steel or concrete constructions. In particular, for multi-storey buildings, it is true for cases with long span (12 m to 15 m) between columns, long span slabs or when a simple and rapid construction way on site is required. Consequently, in the domain of buildings, the composite solution may demonstrate mechanical, economical and architectural interests.
Within the present course, the main design and application rules for composite beams, slabs and columns (used as structural elements in buildings) will be presented.
TIMBER CONSTRUCTIONS:
The part of the course dedicated to timber is divided in 7 chapters and 2 annexes:
1. Introduction
Comparison between the situation of the timber construction in Belgium and in other parts of the world.
Reasons of the main differences; cultural reasons, fear linked to fire and doubts about durability.
Advantages of the timber construction.
2. Properties
The tree.
Constitution of timber.
Main properties of timber: relative humidity, shrinkage, thermal expansion, specific mass, compressive strength, tensile strength, bending strength, shear strength, chocs, coefficients of elasticity, stress-strain diagram.
3. Utilisation of timber in construction
Circular sections.
Square sections.
Glue laminated timber.
Different families of panels.
4. Design
General principles and formulae dor the verification of elements under different effects of actions.
5. Connections
Introduction.
Traditional connections.
Dowel type connections.
Other mecanical connections.
General considerations.
Some examples of common connections.
6. Durability
Protection against fire.
Protection against roting: choice of the species, constructive protection, chemical protection.
7. Structures
Introduction. Beam in bending. Arches. Frames. Trusses. Houses.
Dictionnary
Sources of information
STEEL CONSTRUCTIONS:
The lecture is inscribed in the continuity of lectures given in third Bachelor, option "Constructions" (Steel constructions Part I & II). The steel construction is here considered as a global structure and no more as structural elements. The notions of analyses become very important. The first order and second ordre analysis methods and elastic/plastic analyses will so be applied to steel frames. The concept of rigid/semi-rigid joints will also be investigated. A particular attention will be also paid to constructions with thin members. Finally, aspects of fatigue and weld design will be considered. |
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Learning outcomes of the course :
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| Composite constructions: at the end of the course, the student will be able to identify the advantages and the disadvantages of the steel-concrete composite construction and to design a steel-concrete connexion, a composite slab, a composite beam (isostatic and hyperstatic) and a composite column
Timber constructions: at the end of this course, the student will be able to take into account the particularities and the properties of wood to create a timber structure. He will be able to design the elements of a timber structure. He will be able to take constructional protection measures in order to garantee a good durability to the timber construction that he will create. Il will be able to select the most suitable connection type and to design it.
Steel constructions: at the end of the lecture and the group exercice, the student will be able to design steel structures, with account of the actual behaviour of joints. He will also be able to deal with constructions made of thin members. |
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Prerequisites and co-requisites/ Recommended optional programme components :
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| Composite constructions: some basic knowledge in the domain of steel construction and concrete construction are required to get access to this course
Timber constructions: good understanding of structural mechanics and stability of constructions.
Steel constructions : Mechanic of solids, Mechanic of materials and Mechanic of structures. Steel constructions Part I & II. |
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Planned learning activities and teaching methods :
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| Composite constructions:
- Theoretical lectures : 14h (Attendance recommended but not mandatory)
- Lectures with exercises : 6h (Attendance MANDATORY)
- Exercise in group : 10h (design/verification of a composite structure)
For the exercise in group, a report will have to be delivered at a date fixed by the teachers. If requested by the students, meetings with the teacher who makes the corrections of the report can be organised in order to discuss about the mistakes identified within the performed work.
Timber constructions: some simple exercices are made together by the teacher and the students during the course. As an application, the students will then, in groups of two students, realise a small first project under supervising of the teacher.
Steel constructions:
- Theoretical lectures : 20h (Attendance recommended but not mandatory)
- Group exercise consisting in designing a steel structure
For the exercise in group, a report will have to be delivered at a date fixed by the teacher. If requested by the students, meetings with the teacher who makes the corrections of the report can be organised in order to discuss about the mistakes identified within the performed work. |
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Mode of delivery (face-to-face ; distance-learning) :
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| The courses are given face-to-face
Timber constructions: in 2011-2012, the course will be given in the spring of 2012, on Friday morning, from 8.30 to 12.30 during 8 weeks |
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Recommended or required readings :
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| Composite constructions: documents covering the theoretical part and the exercises will be proposed to the students. Also, the PowerPoint presentations used as a support for the theoretical lectures will be made available under a PDF format.
Timber constructions: there exist a syllabus containing the lecture notes, updated every year. It is distributed to the students in electronic format.
Steel constructions: for this lecture, a set of papers covering the topic of the lecture will be given to the students. |
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Assessment methods and criteria :
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| Composite constructions: at the end of the exercise in group, a written report will have to be delivered by the students and will be evaluated. This evaluation will be taken into account to establish the final quotation for this course. In January, a written and a oral examination will be organised.
Timber constructions: 1/3 of the points are awarded for the small project.
2/3 of the points are awarded for the oral examination. For this examination, a list of questions is distributed to the students when the course is finished. On the day of the examination, each student draws at random two questions among the list. He will then explain the answer to the teacher after having prepared the answer on a blackboard. The lecture notes can not be used during the examination.
Steel constructions: an oral exam will be organised at the end of the quadrimester with a written exam of two hours. For the theory, a particular attention will be paid to the understanding of the physic of the phenomena rather than a restitution of the content of the lecture
At the end of the group exercice, a report will have to be delivered and will be evaluated. The obtained note will be taken into account to compute the average note of the year. The oral examnination will be organised as "open books". |
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Organizational remarks :
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| General remark: the students who have particularly appreciated the topic of the course and want to push it further can choose, or even propose, the next year a subject in the domain for their graduation work.
Composite constructions: the lectures are given on Tuesday morning from 8:15 to 12:30 in the first half of the first semester. The detailed planning of the lectures is given in front of the lift, at level +1, of the B52/3 building. |
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Contacts :
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Composite constructions:
Jean-François DEMONCEAU
tel. +32-4-366.92.65
fax +32-4-366.95.34
jfdemonceau@ulg.ac.be
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Timber constructions:
Jean-Marc FRANSSEN
tel. +32-4-366.92.65
fax +32-4-366.95.34
jm.franssen@ulg.ac.be
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Steel constructions:
Jean-Pierre JASPART
tel. +32-4-366.92.47
fax +32-4-366.91.92
Jean-Pierre.Jaspart@ulg.ac.be
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Secretariat
tel. +32-4-366.93.51
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