Glulam connections assembled with screws in different installation angles

Abstract: Self-tapping screws are the recognized state-of-the-art in fastener technology for timber structures. Combining fasteners of different stiffness, such as self-tapping screws with different installation angles, can be advantageous to simultaneously achieve high connection stiffness and ductility. In this paper, experimental investigations on a total of 65 glued-laminated timber joints assembled with a variety of installation angles including several combinations of self-tapping screws acting axially in withdrawal with self-tapping screws acting laterally are presented. The connection performance was analyzed in terms of the load-carrying capacity, the deformation capacity, the stiffness, and the ductility. The findings demonstrated that joint assemblies with self-tapping screws loaded primarily laterally exhibit low stiffness but high ductility, whereas joint assemblies with self-tapping screws loaded primarily in withdrawal are very stiff but exhibit low ductility. Combining screws in different installation angles created glued-laminated timber connections that combine high stiffness with high ductility. Existing analytical expressions were deemed suitable to estimate load-carrying capacity through simple summation of the different screws’ individual resistances.

Saved in:
Bibliographic Details
Main Authors: Hanna,David, Tannert,Thomas
Format: Digital revista
Language:English
Published: Universidad del Bío-Bío 2021
Online Access:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2021000100454
Tags: Add Tag
No Tags, Be the first to tag this record!