Analytical and Experimental Lateral-Load Response of Self-Centering Posttensioned CLT Walls
Publication: Journal of Structural Engineering
Volume 143, Issue 6
Abstract
A cross-laminated timber (CLT) panel is a heavy timber structural component fabricated by laminating layers of timber boards in an orthogonal pattern. This paper presents a study of the lateral-load response of self-centering (SC) posttensioned CLT structural walls (i.e., SC-CLT walls), which are constructed by posttensioning CLT wall panels to the foundation with vertical posttensioning steel bars. The bars pass through the CLT panels and are anchored to the CLT panels at the top of the wall and to the foundation at the bottom of the wall. Cyclic loading tests were conducted on a series of SC-CLT wall specimens with different configurations. Structural limit states of SC-CLT walls under lateral load are identified. Two types of analytical models are proposed to predict SC-CLT wall response, namely, a design-oriented analytical model based on simple mathematical expressions, and a fiber-element-based numerical model. Comparisons between the analytical and experimental results are made, which indicate that the simple mathematical expressions and the fiber-element-based numerical model provide accurate estimates of the lateral-load response of SC-CLT walls under cyclic loading.
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Acknowledgments
This paper is based on work supported by the National Science Foundation (NSF), Awards No. CMMI-1344617, -1344621, -1344590, -1344646, -1344798. The authors are grateful for the contributions of Marjan Popovski, FPInnovations, and Doug Rammer, USDA Forest Products Lab. The findings and opinions expressed in the paper are the authors’ and do not necessarily reflect the views of the NSF.
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Published In
Journal of Structural Engineering
Volume 143 • Issue 6 • June 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Feb 25, 2016
Accepted: Oct 24, 2016
Published online: Feb 6, 2017
Published in print: Jun 1, 2017
Discussion open until: Jul 6, 2017
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