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    A new shear key for rocking timber shear walls

    Loo, Wei Yuen; Kun, Chern; Quenneville, P.; Chouw, Nawawi

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    Wei Loo AEES paper.pdf (301.2Kb)
    Date
    2013
    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.)
    Permanent link to Research Bank record:
    https://hdl.handle.net/10652/2778
    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.
    Keywords:
    earthquakes, damage, rocking walls, shear walls, load limiting, shear keys, friction damping
    ANZSRC Field of Research:
    090504 Earthquake Engineering
    Copyright Holder:
    Australian Earthquake Engineering Society (AEES)
    Rights:
    This digital work is protected by copyright. It may be consulted by you, provided you comply with the provisions of the Act and the following conditions of use: Any use you make of these documents or images must be for research or private study purposes only, and you may not make them available to any other person. You will recognise the author's and publishers rights and give due acknowledgement where appropriate.
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    • Construction + Engineering Conference Papers [198]

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