Lateral-Load Resistance of Cross-Laminated Timber Shear Walls
Publication: Journal of Structural Engineering
Volume 143, Issue 12
Abstract
Cross-laminated timber shear wall systems are used as a lateral load resisting system in multistory timber buildings. Walls at each level typically bear directly on the floor panels below and are connected by nailed steel brackets. Design guidance for the lateral-load resistance of such systems is not well established and design approaches vary among practitioners. Two cross-laminated two-story timber shear wall systems are tested under vertical and lateral load, along with pullout tests on individual steel connectors. Comprehensive kinematic behavior is obtained from a combination of discrete transducers and continuous field displacements along the base of the walls, obtained by digital image correlation, giving a measure of the length of wall in contact with the floor below. Existing design approaches are evaluated. A new offset-yield criterion based on acceptable permanent deformations is proposed. A lower bound plastic distribution of stresses, reflecting yielding of all connectors in tension and cross-grain crushing of the floor panel, is found to most accurately reflect the observed behavior.
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Acknowledgments
The authors express their gratitude to Chris Yapp and the other technicians at the BRE Structures Laboratory for their contribution to the experimental design and carrying out the tests. The experimental part of this work was funded by a BRE Trust grant, and the investigation of design methods was carried out under a Leverhulme Trust Programme Grant and EPSRC grant EP/M01679X/1. The authors are also grateful to Simpson Strong Tie for providing angle brackets and nails free of charge.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 143 • Issue 12 • December 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Mar 8, 2017
Accepted: Jun 9, 2017
Published online: Sep 28, 2017
Published in print: Dec 1, 2017
Discussion open until: Feb 28, 2018
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