| Reference : Investigation in reusable composite flooring systems in steel and concrete based on c... |
| Dissertations and theses : Doctoral thesis | |||
| Engineering, computing & technology : Civil engineering | |||
| http://hdl.handle.net/10993/51863 | |||
| Investigation in reusable composite flooring systems in steel and concrete based on composite behaviour by friction | |
| English | |
Fodor, Jovan  [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)] | |
| 5-May-2022 | |
| University of Luxembourg, Esch-sur-Alzette, Luxembourg | |
| Docteur en Sciences de l'Ingénieur | |
| 153+23 | |
| Schäfer, Markus | |
| Odenbreit, Christoph | |
| Waldmann, Danièle | |
| Czaderski, Christoph | |
| Pavlovic, Marko | |
| [en] Sustainability ; Steel-concrete composite floors ; Demountable shear connection ; Friction based shear connection ; Trilinear force-slip model ; Composite beam behaviour | |
| [en] The steel-concrete composite systems proved to be very efficient structural solution in terms
of material consumption and mechanical response regarding the construction of the structural floor systems whether in the case of industrial and residential buildings or especially in the case of car parks. However, their contemporary application that relies on the utilization of the welded headed studs as a mean to provide the shear connection between the steel section and the concrete chord renders the system unable to be disassembled (in the best case its steel and concrete parts are recycled). Considering the ongoing push from the linear to circular economical models and the application of 3R principle (Reduce, Reuse & Recycle) such systems are unable to furtherly improve their environmental and economic efficiency through reuse schemes. The profound task in this research is development and the verification of the new demountable shear connector solutions that could allow modularity and demountability (hence reusability) of the steel-concrete composite floor systems while retaining their inherent structural advantages. Based on the previous investigations of the demountable shear connector systems (at the first-place bolted solutions) and investigations of mechanical components that were not strictly related to the shear connectors, four demountable shear connector devices were developed. Having in mind the drawbacks of the earlier solutions, adequate detailing and structural measures were applied and the ease of assembly and disassembly was proved on the constructed prototypes. Afterwards, the mechanical properties of devised demountable connector systems were investigated thoroughly through experimental campaign (push tests) and numerical investigation. Based on the experimental and numerical results of the shear connector behaviour it is concluded that the proposed shear connector device Type B possess adequate strength and stiffness and might be considered ductile in accordance with the EN 1994-1-1 allowing for the application of existent design strategies in accordance with the same design code. The force-slip behaviour of the proposed shear connector is explained and adequate analytic model is proposed. Based on the force-slip behaviour model the applicability of the shear connector is verified on a range of composite beams that represent the demountable floor. | |
| European Regional Development Fund (FEDER) ; University of Luxembourg - UL | |
| Eco-Construction for Sustainable Development (ECON4SD) | |
| Researchers ; Professionals ; Students ; General public ; Others | |
| http://hdl.handle.net/10993/51863 |
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