Experimental Investigation of Base Conditions Affecting Seismic Performance of Mass Plywood Panel Shear Walls
Publication: Journal of Structural Engineering
Volume 146, Issue 8
Abstract
Mass plywood panels (MPP) are a new engineered wood material produced by Freres Lumber Company, Inc. in Lyons, Oregon. This paper presents a study of the lateral-load response of MPP walls connected to different base conditions by two hold-downs on each face. Four base conditions were designed and tested: (1) steel beam, (2) MPP base, (3) a proof of concept MPP base with a bearing plate at each toe of the walls, and (4) MPP base with toe screws. These varied base conditions represent balloon frame and platform constructions as lower and upper bound responses, respectively. The impact of base conditions on the lateral-load response was investigated through a series of in-plane cyclic tests on 76.2 mm thick, MPP wall panels. The test results followed idealized upper and lower bound responses and showed potential for using MPP wall panels as a lateral force resisting system for structures. Using the test results, two models (ASCE 41-13 trilinear and Pinching4 hysteretic) are calibrated and utility of model parameters are illustrated.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request. These items include raw experimental data, summarized spreadsheets, images, and MATLAB scripts for ASCE 41 and Pinching4 model fitting.
Acknowledgments
We extend our acknowledgments to the US Economic Development Agency, Tallwood Design Institute, and Freres Lumber Co. Inc. for providing funding and material support for this research. We also extend our acknowledgments to the ARCS foundation for supporting the first author as an ARCS Scholar. We would like to give a special thanks to Milo Clauson, Dillon Fitzgerald, and several colleagues for providing aid throughout the testing program. The content expressed in this paper corresponds to the findings and views of the authors and does not necessarily represent the opinions or views of the sponsors.
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Information
Published In
Journal of Structural Engineering
Volume 146 • Issue 8 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: May 8, 2019
Accepted: Jan 27, 2020
Published online: May 23, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 23, 2020
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