COMPRESSIVE STIFFNESS PARALLEL TO GRAIN IN TIMBER
Paper i proceeding, 2023

This paper describes results and analysis of experiments of compressive stiffness parallel to grain of glulam, with the focus on the damage zones near loading plates and joints. To investigate the influence factors of physical properties and the mechanism of the damage zone near the loading plates or the joints, compression tests on 90 specimens were performed. As a result, it was observed that damage zones exist near the loading plates and the joints. The Young’s modulus of the damage zone was approximately 2% of that of a common longitudinal modulus of elasticity. The lengths of the damage zone of wood-wood joints are larger than that of wood-steel joints. The length of the damage zone and its scatter increase as the width of the cross-section increases. In the specimens, the lengths of the damage zone were 0.7~4.7mm. Therefore, the length of the damage zone has a size effect of the cross-sectional area and depends on the processing accuracy on the contact surface. The size effect was evaluated by the strongest link model and the evaluation method of the compressive stiffness parallel to the grain was proposed.

Glulam

Compression parallel to grain

Timber

Connections

Damage zone

Joints

Författare

Marina Totsuka

Chiba University

Robert Jockwer

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Kenji Aoki

University of Tokyo

Masahiro Inayama

University of Tokyo

13th World Conference on Timber Engineering, WCTE 2023

Vol. 1 251-258
9781713873297 (ISBN)

13th World Conference on Timber Engineering: Timber for a Livable Future, WCTE 2023
Oslo, Norway,

Ämneskategorier

Arkitekturteknik

Trävetenskap

Husbyggnad

DOI

10.52202/069179-0035

Mer information

Senast uppdaterat

2023-09-25