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Experimental study of dowel design in the shear plate dowel joint

Larsson, Gustaf LU ; Gustafsson, Per Johan LU and Serrano, Erik LU orcid (2018) 2018 World Conference on Timber Engineering, WCTE 2018
Abstract

The shear plate dowel joint (SPDJ) is a novel connection design for use in heavy timber structures. Load transfer between timber members is enabled using a single large diameter dowel and externally glued steel plates. The steel plates are glued to the timber using bond lines of low stiffness and high fracture energy to achieve a uniform shear stress distribution, thus maximizing the load carrying capacity. This experimental study aims at studying the global connection response for different dowel types. The SPDJ is tested for joint configurations with one or three timber structural elements using 10 and 6 different types of dowels respectively. Solid or thick-walled steel dowels are used as reference, which are compared to thin-walled... (More)

The shear plate dowel joint (SPDJ) is a novel connection design for use in heavy timber structures. Load transfer between timber members is enabled using a single large diameter dowel and externally glued steel plates. The steel plates are glued to the timber using bond lines of low stiffness and high fracture energy to achieve a uniform shear stress distribution, thus maximizing the load carrying capacity. This experimental study aims at studying the global connection response for different dowel types. The SPDJ is tested for joint configurations with one or three timber structural elements using 10 and 6 different types of dowels respectively. Solid or thick-walled steel dowels are used as reference, which are compared to thin-walled metal tubes for an increased connection ductility. In addition, engineered wood products are used to investigate whether a SPDJ design made mainly of wood is possible. The results indicate that it is indeed possible to increase the ductile behaviour of the SPDJ by 30-80% using thin-walled metal dowels, generally at the expense of the load bearing capacity, with an upper limit being defined by shear plate bond line failure at 5.4 MPa in average shear. The shear plate is typically made of steel, and the study finds plywood an unsuitable replacement due to low shear strength between the veneers. Laminated densified wood is tested as dowel material with impressive results similar to those of thicker metal dowels, and such material could possibly be used also for the plates.

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Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
Ductility, Experimental study, Large dowels, Shear plate dowel joint, Timber connection
conference name
2018 World Conference on Timber Engineering, WCTE 2018
conference location
Seoul, Korea, Republic of
conference dates
2018-08-20 - 2018-08-23
external identifiers
  • scopus:85058141942
language
English
LU publication?
yes
id
73252906-2d9e-4eba-aa62-bc40bdd9bb70
alternative location
https://indico.conference4me.psnc.pl/event/171/session/362/contribution/215/material/paper/1.pdf
date added to LUP
2018-12-20 14:51:05
date last changed
2021-08-18 02:50:26
@misc{73252906-2d9e-4eba-aa62-bc40bdd9bb70,
  abstract     = {<p>The shear plate dowel joint (SPDJ) is a novel connection design for use in heavy timber structures. Load transfer between timber members is enabled using a single large diameter dowel and externally glued steel plates. The steel plates are glued to the timber using bond lines of low stiffness and high fracture energy to achieve a uniform shear stress distribution, thus maximizing the load carrying capacity. This experimental study aims at studying the global connection response for different dowel types. The SPDJ is tested for joint configurations with one or three timber structural elements using 10 and 6 different types of dowels respectively. Solid or thick-walled steel dowels are used as reference, which are compared to thin-walled metal tubes for an increased connection ductility. In addition, engineered wood products are used to investigate whether a SPDJ design made mainly of wood is possible. The results indicate that it is indeed possible to increase the ductile behaviour of the SPDJ by 30-80% using thin-walled metal dowels, generally at the expense of the load bearing capacity, with an upper limit being defined by shear plate bond line failure at 5.4 MPa in average shear. The shear plate is typically made of steel, and the study finds plywood an unsuitable replacement due to low shear strength between the veneers. Laminated densified wood is tested as dowel material with impressive results similar to those of thicker metal dowels, and such material could possibly be used also for the plates.</p>},
  author       = {Larsson, Gustaf and Gustafsson, Per Johan and Serrano, Erik},
  language     = {eng},
  title        = {Experimental study of dowel design in the shear plate dowel joint},
  url          = {https://indico.conference4me.psnc.pl/event/171/session/362/contribution/215/material/paper/1.pdf},
  year         = {2018},
}