Conception d'un système structural permettant l'utilisation de l'ossature légère modulaire dans les bâtiments de grande hauteur

Authors: Labrecque, Nicolas
Advisor: Blanchet, PierreOudjene, Marc
Abstract: To respond to both global urban population growth and climate change, new structural systems with a high level of prefabrication and renewable materials need to be developed. Light-frame construction can have a very high prefabrication rate but is currently limited to 6 storeys. A new structural system that could allow the use of light-frame modular construction in high-rise buildings is modeled and analysed. This system consists of a hyperstructure supporting the loads of 4-storey light-frame superimposed substructures. Twenty-storey hyperstructures, in glulam, concrete and wood-concrete hybrid are designed according to the 2015 National Building Code of Canada and compared. A simplified model for the light-frame modules according to the CSAO86-19 is proposed. The interaction between the two systems and the impact on the substructures are analysed. The results of the seismic response spectrum analysis and the dynamic wind analysis show that with a glulam hyperstructure, the modules can be connected to the columns and floors or only to the floors. With a concrete hyperstructure, the modules must be connected to the columns and the cores. Standard shearwall assemblies are sufficient to resist the shear induced by gravity, wind and seismic loads. The analysis indicates that the system could be viable, but further research should be carried out, particularly on connections and fire resistance.
Document Type: Mémoire de maîtrise
Issue Date: 2021
Open Access Date: 13 December 2021
Grantor: Université Laval
Collection:Thèses et mémoires

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