Numerical Modeling Strategies for In-Plane Behavior of Straight Sheathed Timber Diaphragms
Publication: Journal of Structural Engineering
Volume 144, Issue 10
Abstract
Two modeling approaches with different levels of refinement were used to numerically investigate the influence of different parameters on the response of straight sheathed timber diaphragms when subjected to in-plane loading. The investigated parameters included diaphragm aspect ratio, scale factor (i.e., diaphragm size), impact of board-to-board contact phenomena, and the effects of board-to-board shear force exchange. The aim of the work presented herein was to use numerical modeling to investigate the aspects that potentially contribute to the difference in experimental behavior reported in literature and that consequently might have influenced provisions encompassed in the most recent standards for the assessment of timber diaphragms. The modeling strategies were validated against a wide range of available experimental data on newly constructed and vintage timber floor specimens. Analysis results confirmed that the in-plane behavior of straight sheathed diaphragms is significantly influenced by parameters that are often neglected by numerical studies and assessment procedures.
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Acknowledgments
Gianni Schiro is gratefully thanked for his help and valuable remarks. The 2018 ReLUIS-DPC network (Italian University Network of Seismic Engineering Laboratories and Italian Civil Protection Agency) is gratefully acknowledged for the financial support given to the study.
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©2018 American Society of Civil Engineers.
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Received: Jul 21, 2017
Accepted: Mar 26, 2018
Published online: Jul 6, 2018
Published in print: Oct 1, 2018
Discussion open until: Dec 6, 2018
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