Modeling of Cross-Laminated Timber Plate Curved by Screw-Press Bonding 1
Tips & Tricks
Our client had an exciting task of modeling a cross‑laminated timber plate with such a precamber that in the case of a span more than ten meters, the deformation is below the limit value of l/300 = 3.3 cm. The idea was to screw the plate on a glulam beam and then put it together with a glue approved by building authorities in order to create a rigid bond between the plate and the member.
The reason for this high effort was that the cantilevering of a glulam beam in the factory can be produced relatively easily and thus cost-effectively. However, increasing the height of a cross-laminated timber slab requires more effort.
The figure shows the exaggerated structure of the glulam beam and the cross-laminated timber panel. The glulam beam acts as a downstand beam, rigidly connected to the slab.
In the second part of this series, the restoring forces resulting from the curvature of the plate are calculated by means of line deformation and in the third part, the "plate beam" with the full load is finally calculated in RFEM.
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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements