Multi-storey timber buildings have gained interests during the last decades and are becoming more and more competitive with other traditional multi-storey building types. In order to be competitive, modern timber construction for multi-storey housing can take advantage from industrial production possibilities, like prefabrication, rapid erection methods, etc. While providing with an adequate level of building performance, modern timber construction has also the potential to reduce the environmental impact of buildings.
A building system based on Cross Laminated Timber (CLT) is developed by Stora Enso for the Nordic countries. In this development, there is a need for prefabricated components where CLT must be combined effectively with other structural materials.
In a first phase of the project, investigations were made on shear connectors for connecting prefabricated concrete beams to CLT panels to form prefabricated floor units with integrated installations.
In a second phase, the project was refocused towards composite Glulam-CLT floor elements. The current study consists in the evaluation of innovative double sided nail plates shear connectors combined with inclined screws. The potential of this type of connection is to provide with a high level of composite action while being an alternative to glued connection between CLT and Glulam in an industrial prefabricated floor production process within Nordic facilities.