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Numerical modelling of CLT diaphragms tested on a shake-table experiment

Barbosa, Andre R.; Rodrigues, Leonardo; Sinha, Arjit; Higgins, Christopher; Zimmerman, Reid B.; Breneman, Scott; Pei, Shiling; van de Lindt, John; Berman, Jeffrey; McDonnell, Eric; Branco, Jorge M.; Neves, Luis C.


Andre R. Barbosa

Leonardo Rodrigues

Arjit Sinha

Christopher Higgins

Reid B. Zimmerman

Scott Breneman

Shiling Pei

John van de Lindt

Jeffrey Berman

Eric McDonnell

Jorge M. Branco


Current standards and existing literature provide very limited information regarding the design of cross-laminated timber (CLT) floor diaphragms. In addition, limited procedures exist to develop analytical models to estimate the deformation response of CLT floor diaphragms. This paper presents a modelling approach that captures the response of CLT timber diaphragms, with a special focus on CLT spline panel-to-panel connections. The modeling approach is validated through the comparison of the results of the computation model with experimental data obtained from a series of shake-tables test performed on a two-story full-scale building tested in the summer of 2017 at UC San Diego Large High Performance Outdoor Shake Table. The two-story building included two diaphragm designs at each floor level. The first solution consists of CLT panels connected with plywood surface splines that are fastened using self-tapping screws, while the second consists of a CLT-concrete composite floor solution. Results from the nonlinear pushover analysis describe accurately the experimental data obtained.


Barbosa, A. R., Rodrigues, L., Sinha, A., Higgins, C., Zimmerman, R. B., Breneman, S., …Neves, L. C. (2018). Numerical modelling of CLT diaphragms tested on a shake-table experiment.

Conference Name 2018 World Conference on Timber Engineering (WCTE 2018)
Start Date Aug 20, 2018
End Date Aug 23, 2018
Acceptance Date Jun 8, 2018
Publication Date Aug 21, 2018
Deposit Date Feb 27, 2019
Publicly Available Date Feb 27, 2019
Keywords CLT; Diaphragms; Seismic response; Numerical modelling; Shake table
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