Reference : Investigation of the Load-Bearing Behaviour of CoSFB-Dowels
Dissertations and theses : Doctoral thesis
Engineering, computing & technology : Civil engineering
Engineering, computing & technology : Materials science & engineering
Engineering, computing & technology : Mechanical engineering
Physics and Materials Science
Investigation of the Load-Bearing Behaviour of CoSFB-Dowels
Braun, Matthias Volker mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
University of Luxembourg, ​Luxembourg, ​​Luxembourg
Docteur en Sciences de l'Ingénieur
158 + 48
Odenbreit, Christoph mailto
Reif, Ferdinand mailto
Kuhlmann, Ulrike mailto
Vassart, Olivier mailto
Schäfer, Markus mailto
[en] slim-floor beam ; composite design ; CoSFB ; CoSFB-Dowels ; push-out tests ; numerical simulation ; ductile damage for metals ; shear damage
[en] This Thesis is the first PhD thesis written about CoSFB-Dowels. Therefore, focus of the scientific work presented here, was on the identification of parameters influencing the load-bearing behaviour in general and on parameters contributing to the load-bearing capacity of CoSFB-Dowels in detail. A CoSFB-Dowel is an innovative shear connector for steel-concrete composite slim-floor beams. It consists of circular openings drilled in the web of the steel section with reinforcement bars passing through and filled with normal concrete in-situ.
Push-out tests have been performed already in an earlier research project initiated by the author. In this Thesis, detailed analysis of the test results was done and a finite element model developed simulating the push-out tests, which led to an improved understanding of the overall load-bearing behaviour. Further, the numerical model was used to identify and to evaluate components contributing to the stiffness, to the linear-elastic load and to the maximum load. The findings of this research led to the formulation of a mechanical model and an analytical method to evaluate the load-bearing capacity of a CoSFB-Dowel. The analytical method was validated with the test results. This Thesis is concluded by a proposal allowing for a conservative determination of the design resistance of CoSFB-Dowels.
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