Proposed reinforcement improves punching resistance and reduces shear stress in cross-laminated timber panels, indicating enhanced structural integrity.
This paper proposes an innovative solution for reinforcing cross-laminated timber (CLT) panels against punching effects using a glued-in steel plate. The steel column head is shaped as a six-pointed star, inserted into grooves in the CLT panel, and bonded with a two-component epoxy adhesive. A numerical model was developed to verify the potential reinforcing behaviour of the connector. The model was based on boundary conditions representing the set-up of a future experiment. This reinforcement reduces shear stress in the critical circumference and shifts it away from the support, thereby improving the punching resistance. Preliminary analysis suggests a possible 22% punching resistance increase.
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Michal Kázsmér (2025) studied this question.
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