Thesis
Behavior of Steel Plate Reinforced Cross-Laminated Timber Panels in Out-of-Plane Loading
Washington State University
Master of Science (MS), Washington State University
01/2022
DOI:
https://doi.org/10.7273/000004497
Handle:
https://hdl.handle.net/2376/125171
Abstract
The use of steel plate reinforcement to improve the stiffness and strength of CLT was examined in this study. Double-shear lap tests were conducted to study bond between wood and steel. Rigid epoxy was determined to be suitable to bond steel to wood, given that wood failure occurred in shear parallel-to-grain rather than bond failure. Bond strength equations that limit plate thickness to prevent bond failure were proposed for use in panel design. An unreinforced, singly-reinforced, and doubly-reinforced panel were fabricated and tested to failure under four point bending in the out-of-plane direction. A thin wood veneer tie layer bonded to each side of each steel plate using structural epoxy was used in the fabrication of the panels, and these hybrid layers were fabricated prior to assembly of the panels. Test results were compared to analytical results from the shear analogy method. Shear deformations using the shear analogy method were in poor agreement with measured values. Thus, judgement was made to neglect the effects of shear deformation. A parametric study was conducted using the shear analogy method. The decision to neglect effects of shear deformations on flexural stiffness was applied to the parametric study. The use of steel plate reinforcement was shown to provide a significant increase in out-of-plane panel stiffness. An increase of at least twofold in calculated strength, through prevention of rolling shear failure, was achieved by orienting all dimensional lumber layers in the longitudinal direction, making it more like a glulam beam.
Metrics
Details
- Title
- Behavior of Steel Plate Reinforced Cross-Laminated Timber Panels in Out-of-Plane Loading
- Creators
- Cameron Faley
- Contributors
- Christopher Motter (Advisor)Adam Phillips (Committee Member)Don Bender (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 65
- Identifiers
- 99900882237001842
- Language
- English
- Resource Type
- Thesis