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Analyse des méthodes de calcul nécessaires au dimensionnement de passerelles composites

Hendrix, Arnaud ; Jadoul, Louis
(2019)

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Hendrix_53211400_Jadoul_50681400_2019.pdf
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Details

Supervisors
Doneux, Catherine ; Parmentier, Benoit ; Delannay, Laurent ; Jafari, Mustafa
Faculty
Ecole polytechnique de Louvain
Degree label
Master [120] : ingénieur civil des constructions
Abstract
enThe use of fibre-reinforced polymer (FRP) has developed in recent years in the field of civil engineering. One particular application allows a good use of the advantages of the material : pedestrian bridges. However, the development of FRP is hampered by technological, financial and normative aspects. One of the reasons is that there is currently no international standard to guide FRP design. The study in this paper reviews the literature about the use of this material in the construction field and specifically to footbridges. A comparative analysis of existing standards and guides in several countries is then developed according to several criteria such as the scope of application, the ULS ans SLS requirements, the safety factors applied and the determination of characteristic values. In order to make this comparison more practical, these standards are then applied to the calculation and design of a footbridge. Various solutions are highlighted depending on the guidelines used. Approaches using pultruded profiles recommended by the US guideline and Fiberline will lead to a truss structure with solid profiles. An application of the CUR96 and "Prospect for new guidance in the design of FRP" (JRC prospect) guides allows more freedom in the designing phase and leads to a better optimization in the structure. However, some differences remain between those two guides. The ULS safety factors are significantly different but they do not impact the design which depends only on the SLS conditions.