A new shear key for rocking timber shear walls
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Other Title
Authors
Loo, Wei Yuen
Kun, Chern
Quenneville, P.
Chouw, Nawawi
Kun, Chern
Quenneville, P.
Chouw, Nawawi
Author ORCID Profiles (clickable)
Degree
Grantor
Date
2013
Supervisors
Type
Conference Contribution - Paper in Published Proceedings
Ngā Upoko Tukutuku (Māori subject headings)
Keyword
earthquakes
damage
rocking walls
shear walls
load limiting
shear keys
friction damping
damage
rocking walls
shear walls
load limiting
shear keys
friction damping
ANZSRC Field of Research Code (2020)
Citation
Loo, W. Y., Kun, C., Quenneville, P., and Chouw, N. (2013). A new shear key for rocking timber shear walls. Australian Earthquake Engineering Society 2013 Conference, Nov 15-17, Tasmania(Ed.)
Abstract
Allowing shear walls to rock is one way of protecting structures from earthquake damage, or at least minimising this damage. Walls allowed to rock must have the ability to resist both overturning moment, and lateral forces. While resistance to overturning is typically provided by self-weight, post-tensioned cables, and/or damping devices acting as hold-downs, a particular challenge is to provide adequate resistance to lateral forces, which will not interfere with, nor disturb the function of the devices chosen to
resist overturning. During an earthquake, there will typically be high contact forces between the shear keys and shear walls. Friction induced by these contact forces can add to the moment resistance against overturning – often in an unpredictable way.
While supplemental moment resistance could be considered a desirable outcome in the case of non-rocking walls; in the case of rocking walls, their load limiting ability could be compromised. A new shear key concept, that is both simple and economical, is proposed and implemented at the bottom centre of an experimental timber wall that is allowed to rock. Under loading, the shear key performed as intended, providing adequate lateral resistance, while at the same time allowing the wall to rock in the intended manner.
Publisher
Australian Earthquake Engineering Society (AEES)
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Link to ePress publication
DOI
Copyright holder
Australian Earthquake Engineering Society (AEES)
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All rights reserved