Capacity and Failure-Mode Prediction of Mass Timber Panel–Concrete Composite Floor System with Mechanical Connectors
Publication: Journal of Structural Engineering
Volume 147, Issue 2
Abstract
Lack of design standards and guidelines is the most important barrier limiting widespread use of mass timber panel–concrete (MTPC) composite floor systems, a preferred choice by designers in modern multistory mass timber construction. The commonly used Gamma method of designing timber–concrete composite floors has some limitations and cannot predict the load-carrying capacity and failure modes of composite floor systems. Therefore, an analytical model was developed considering the interlayer connector behavior under the elastic-plastic range along with an acoustic layer between timber and concrete, to accurately predict the capacity and failure modes of MTPC composite floor system. One-way acting composite floor panels were tested under four-point bending with different configurations to investigate the influence of different parameters and to validate the developed capacity prediction model. It was found that the model can predict the capacity of the MTPC composite system within 17% of the experimental value and the associated failure mode. This developed capacity prediction model for MTPC composite floors will facilitate the use of these system in mass timber construction.
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Data Availability Statement
All data, models, and code generated or used during the study appears in the published article.
Acknowledgments
The authors would like to thank the Natural Sciences and Engineering Research Council of Canada (NSERC) for its financial support of this study under the Industrial Research Chair Program. Financial support was also provided by the Landmark Group of Companies, FPInnovations, Canadian Wood Council, MTC Solutions, Rotho Blaas, Western Archrib, Pinkwood Ltd, and Alberta Innovates. In addition, Nordic Structures, Rotho Blaas, and Western Archrib provided test materials for the test program. Their contributions are gratefully acknowledged. Also, the authors are grateful to the I. F. Morrison Structural Engineering Laboratory, University of Alberta technicians for their assistance during the bending test.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 2 • February 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Mar 30, 2020
Accepted: Sep 9, 2020
Published online: Dec 1, 2020
Published in print: Feb 1, 2021
Discussion open until: May 1, 2021
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