Nonlinear Models of Multistory Timber Frames with Timber Buckling-Restrained Braces
Publication: Journal of Structural Engineering
Volume 150, Issue 9
Abstract
The building industry requires the development of a ductile lateral force resisting system made of mass timber to help mass timber to continue to grow in popularity as the primary structural building material. The OpenSees framework was used to develop a numerical model of a single-story timber frame with a timber buckling-restrained brace, which was validated by the results of a previously completed series of quasistatic cyclic timber buckling-restrained brace (TBRB) component and subassembly tests. The experimental validation included a model developed for the hysteretic behavior of the TBRB and the rotational capacity of beam–column joints made with mass ply lam (MPL) panels, two slotted-in steel plates, and a number of steel dowels. The single-story model TBRB braced frame was then expanded to a numerical model of an eight-story mass timber buckling-restrained braced frame. The TBRB frame was analyzed with static pushover, quasistatic cyclic loads, and earthquake simulations. During the simulation of eleven design-level earthquake ground motions, the building experienced a peak interstory drift at of 2.54% at the first-floor level and a peak floor acceleration of 1.7g at the roof. The numerical model developed in this research of a timber buckling-restrained braced frame with TBRBs is novel and could be used to design timber buckling-restrained braced frames as a ductile lateral force resisting solution for mass timber buildings in seismic regions.
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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
The authors would like to acknowledge the financial support provided by Wood Innovations, under USDA Grant No. 20-DG-11046000-615.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 150 • Issue 9 • September 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Aug 23, 2023
Accepted: Mar 18, 2024
Published online: Jun 21, 2024
Published in print: Sep 1, 2024
Discussion open until: Nov 21, 2024
ASCE Technical Topics:
- Bracing
- Buckling
- Building materials
- Construction engineering
- Construction methods
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Forces (type)
- Frames
- Lateral forces
- Materials engineering
- Models (by type)
- Numerical models
- Solid mechanics
- Structural dynamics
- Structural engineering
- Structural members
- Structural systems
- Structures (by type)
- Wood and wood products
- Wood structures
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