Seismic Performance of a Hybrid Building System Consisting of a Light Wood Frame Structure and a Reinforced Masonry Core
Publication: Journal of Performance of Constructed Facilities
Volume 28, Issue 6
Abstract
Story limit of residential light wood-frame buildings in the province of British Columbia was raised from four to six in 2009. The increase in height leads to more flexible buildings, potentially requiring the stiffer elevator shaft and stairwell core made from reinforced masonry to reduce building deflection under lateral loads. Guidelines for designing such hybrid buildings connected with ductile connections are currently lacking. As a first step towards achieving this goal a six-story light wood-frame building was designed assuming different scenarios of attachment to a stiffer core. Seismic responses to 10 ground motions of the designed six-story light wood-frame building with and without connection to a reinforced masonry core were obtained through the use of a finite-element modeling procedure through commercial software. A user-developed subroutine to model the hysteretic performance of wood shear walls, masonry core and connections was used in the analyses. Results show that the maximum lateral drift of wood shear-wall subsystem reduces to 79, 62 and 48% on average of that of pure wood structure in hybrid buildings with masonry core designed to 25, 50 and 100% shear resistance of the wood subsystem respectively. It is concluded that seismic design of the wood subsystem in hybrid building can be based on the use of the same seismic force modification factor for light wood frame system published in the the building code.
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Acknowledgments
The authors acknowledge the funding support provided by the Natural Sciences and Engineering Research Council (NSERC) of Canada through the NSERC Strategic Research Network on Innovative Wood Products and Building Systems (NEWBuildS). The technical support of FPInnovations is gratefully acknowledged.
References
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 28 • Issue 6 • December 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Aug 9, 2013
Accepted: Feb 17, 2014
Published online: Feb 19, 2014
Published in print: Dec 1, 2014
Discussion open until: Jan 8, 2015
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