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Expanding wood use towards 2025: modelling guide for timber structures, year 1

https://library.fpinnovations.ca/fr/permalink/fpipub7976
Auteur
Chen, Zhiyong
Date
March 2021
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Chen, Zhiyong
Collaborateur
Engineered Wood Assocation (APA)
American Wood Council (AWC)
Date
March 2021
Genre du document
Research report
Description physique
23 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Cross Laminated Timber (CLT)
Performance
Building construction
Building materials
Models
Standards
Série
Expanding wood use towards 2025
Langue
English
Résumé
Computer modelling is an essential part in the analysis and design of mid- and high-rise residential and commercial buildings as well as long-span structures. It is also a valuable tool in the optimisation of wood-based products, connections, and systems. An FPInnovations’ survey shows that practicing engineers are unfamiliar with timber structure modelling, and researchers generally lack resources for advanced modelling of timber systems. Furthermore, wood analysis and design modules currently implemented in a few structural analysis software are usually not suitable for complex or hybrid timber structures. This does not bode well given that performance-based design which is the future direction of building codes and material standards will rely even more on demonstrating the structural performance through computer modelling. In this project, a modelling guide for timber structures is being developed by FPInnovations with a global collaborative effort involving experts in various areas, with the aim of (a) assisting practicing engineers apply computer modelling to timber structures; (b) enriching researchers’ resources for advanced computer modelling of timber systems; and (c) assisting software companies to identify the gaps and upgrade their programs accordingly to accommodate advanced computer modelling of timber structures.
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Expanding wood use towards 2025: seismic performance of midply shear walls

https://library.fpinnovations.ca/fr/permalink/fpipub7699
Auteur
Chen, Zhiyong
Ni, Chun
Karacabeyli, Erol
Yeh, Borjen
Line, Philip
Date
March 2020
Édition
52949
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Chen, Zhiyong
Ni, Chun
Karacabeyli, Erol
Yeh, Borjen
Line, Philip
Collaborateur
Engineered Wood Assocation (APA)
American Wood Council (AWC)
Date
March 2020
Édition
52949
Genre du document
Research report
Description physique
47 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Cross Laminated Timber (CLT)
Performance
Building construction
Building materials
Seismic
Shear walls
Standards
Série
Expanding wood use towards 2025
Langue
English
Résumé
Midply shear wall (hereafter Midply), which was originally developed by researchers at Forintek Canada Corp. (predecessor of FPInnovations) and the University of British Columbia, is a high-capacity shear wall system that is suitable for high wind and seismic loadings. Its superior seismic performance was demonstrated in a full-scale earthquake simulation test of a 6-storey wood-frame building in Japan. In collaboration with APA–The Engineered Wood Association and the American Wood Council (AWC), a new framing arrangement was designed in this study to increase the vertical load resistance of Midply and make it easier to accommodate electrical and plumbing services. In this study, a total of 14 Midply specimens in six wall configurations with different sheathing thicknesses and nail spacing were tested under reversed cyclic loading. Test results showed that Midply has approximately twice the lateral load capacity of a comparable standard shear wall. The drift capacity and energy dissipation capability are also greater than comparable standard shear walls. For Midply to use the same seismic force modification factors as standard shear walls, seismic equivalency to standard shear walls in accordance with ASTM D7989 was also conducted. Although Midply has superior lateral load and drift capacities, it does not seem to be as ductile as the standard shear walls at the same over-strength level. Additional testing and dynamic analysis are recommended to address this issue.
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