Seismic Design of Cross-Laminated Timber Platform Buildings Using a Coupled Shearwall Concept
Publication: Journal of Architectural Engineering
Volume 23, Issue 3
Abstract
Cross-laminated timber (CLT) is an engineered wood material that was introduced in the last decade as a promising candidate for building wood structures higher than 10 stories. Thus far, a handful of tall residential CLT buildings have been built in low seismic regions around the world. Previous full-scale seismic shaking table tests of multistory CLT buildings revealed that this system is susceptible to overturning damage as a result of lateral seismic loads. To effectively resist overturning, a new floor connection detail was proposed to engage CLT floor panels as coupling elements for CLT shearwall stacks in the building floor plan. This approach is fundamentally different from traditional isolated shearwall stack design methods used in multistory light-framed wood buildings. The proposed method was illustrated through the seismic design of a 12-story CLT building located in Los Angeles, California, which was then subjected to the design equivalent lateral force to evaluate the conservativeness in the proposed simplified calculation.
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Acknowledgments
The authors greatly appreciate the constructive comments provided on the design process from Phil Line for the American Wood Council, Scott Breneman from Wood Works, and Steven Pryor from Simpson Strong-Tie.
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© 2017 American Society of Civil Engineers.
History
Received: Jun 24, 2016
Accepted: Feb 7, 2017
Published online: Apr 20, 2017
Published in print: Sep 1, 2017
Discussion open until: Sep 20, 2017
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