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Analytical and Numerical Models for Wind and Seismic Design and Assessment of Mass Timber Diaphragms

Rodrigues, Leonardo G.; Barbosa, Andre R.; Sinha, Arijit; Higgins, Christopher; Breneman, Scott; Zimmerman, Reid B.; Pei, Shiling; Van De Lindt, John W.; Berman, Jeffrey W.; Branco, Jorge M.; Neves, Luís C.

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Authors

Leonardo G. Rodrigues

Andre R. Barbosa

Arijit Sinha

Christopher Higgins

Scott Breneman

Reid B. Zimmerman

Shiling Pei

John W. Van De Lindt

Jeffrey W. Berman

Jorge M. Branco

Dr Luis Neves Luis.Neves@nottingham.ac.uk
DIRECTOR OF PRODUCT AND LEARNER EXPERIENCE



Abstract

While the use of cross-laminated timber (CLT) panels for building construction has increased over the last several decades, current standards and existing literature provide limited information regarding the design of CLT diaphragms or the prediction of their deflections when subjected to wind and strong earthquake motions. This paper presents the design and assessment of a CLT diaphragm that was part of a full-scale two-story structure subjected to shake-table testing. An analytical model is proposed for diaphragm deflection accounting for in-plane shear and bending stiffness, as well as the stiffness of various connections. Moreover, a refined numerical modeling strategy is proposed in order to consider phenomena such as panel-to-panel gap closure. Results indicate that the analytical model yields conservative results both in terms of deflections and forces when compared to the numerical model that simulates similar sources of strength and stiffness. The analytical model is suitable for the design of symmetric diaphragms with regular shapes, whereas the numerical model can also be used to model asymmetric diaphragms with irregular shapes.

Citation

Rodrigues, L. G., Barbosa, A. R., Sinha, A., Higgins, C., Breneman, S., Zimmerman, R. B., Pei, S., Van De Lindt, J. W., Berman, J. W., Branco, J. M., & Neves, L. C. (2023). Analytical and Numerical Models for Wind and Seismic Design and Assessment of Mass Timber Diaphragms. Journal of Structural Engineering, 150(2), https://doi.org/10.1061/JSENDH.STENG-12265

Journal Article Type Article
Acceptance Date Aug 15, 2023
Online Publication Date Dec 7, 2023
Publication Date Dec 7, 2023
Deposit Date Dec 9, 2023
Publicly Available Date Jan 12, 2024
Journal Journal of Structural Engineering
Print ISSN 0733-9445
Electronic ISSN 1943-541X
Publisher American Society of Civil Engineers
Peer Reviewed Peer Reviewed
Volume 150
Issue 2
DOI https://doi.org/10.1061/JSENDH.STENG-12265
Keywords Mechanical Engineering, Mechanics of Materials, General Materials Science, Building and Construction, Civil and Structural Engineering
Public URL https://nottingham-repository.worktribe.com/output/28152775
Publisher URL https://ascelibrary.org/doi/10.1061/JSENDH.STENG-12265
Additional Information Received: 2022-11-18; Accepted: 2023-08-15; Published: 2023-12-07

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