Cyclic Test and Seismic Equivalency Evaluation of High-Capacity Light Wood-Frame Shear Walls for Midrise Buildings
Publication: Journal of Structural Engineering
Volume 148, Issue 10
Abstract
Recent editions of Canadian national building codes increased the height limit for wood-frame construction from four to six stories. In addition, the seismic loads have also been increased. These increases in building height and seismic loads have raised the demand for a stronger shear wall system for construction of midrise wood-frame buildings, especially for those located in high seismic zones. In collaboration with FPInnovations, a new high-capacity shear wall system with multiple rows of fasteners along sheathing edges was developed. This paper presents the test results of shear walls with two rows of nails. A total of 10 specimens were tested under cyclic loading. Test results show that shear walls with two rows of nails have 1.8–2.0 times the lateral load resistance of a standard shear wall with the same sheathing thickness, nail diameter, and nail spacing. The initial stiffness and ultimate displacement of the high-capacity shear wall are also greater than that of the comparable standard shear wall. Based on seismic equivalency criteria, shear walls with two rows of nails can be assigned a design value of the comparable standard shear wall multiplied by a factor of 1.7.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This project is funded by Canadian Forest Service of Natural Resources Canada and Natural Sciences and Engineering Research Council of Canada—Discovery Grants. Donation of continuous threaded steel rods, coupler nuts, and nuts by Simpson Strong-Tie, which have been used for tie-downs of the shear wall specimens, is greatly appreciated.
References
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 148 • Issue 10 • October 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Oct 18, 2021
Accepted: May 9, 2022
Published online: Aug 12, 2022
Published in print: Oct 1, 2022
Discussion open until: Jan 12, 2023
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