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Ductile Cross Laminated Timber (CLT) Platform Structures with Passive Damping

https://research.thinkwood.com/en/permalink/catalogue1728
Year of Publication
2016
Topic
Seismic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Hashemi, Ashkan
Loo, Wei Yuen
Masoudnia, Reza
Zarnani, Pouyan
Quenneville, Pierre
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Mechanical Properties
Keywords
Low-Rise
Numerical Model
Reverse Cyclic Loading
Quasi-Static
Simulation
Strength
Slip
Platform Buildings
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4730-4737
Summary
Multi-storey platform cross laminated timber (CLT) structures are becoming progressively desirable for engineers and owners. This is because they offer many significant advantages such as speed of fabrication, ease of construction, and excellent strength to weight ratio. With platform construction, stories are fixed together in a way that...
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In-Plane Strength and Stiffness of Cross-Laminated Timber Shear Walls

https://research.thinkwood.com/en/permalink/catalogue2180
Year of Publication
2018
Topic
Mechanical Properties
Connections
Seismic
Material
CLT (Cross-Laminated Timber)
Application
Walls

Performance of Cross-Laminated Timber Shear Walls for Platform Construction Under Lateral Loading

https://research.thinkwood.com/en/permalink/catalogue1268
Year of Publication
2018
Topic
Seismic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Author
Shahnewaz, Md
Organization
University of British Columbia
Year of Publication
2018
Country of Publication
Canada
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Topic
Seismic
Connections
Keywords
Lateral Loading
In-Plane Stiffness
Platform Buildings
Openings
Thickness
Aspect Ratios
Language
English
Research Status
Complete
Summary
Cross-laminated timber (CLT) is gaining popularity in residential and non-residential applications in the North American construction market. CLT is very effective in resisting lateral forces resulting from wind and seismic loads. This research investigated the in-plane performance of CLT shear wall for platform-type buildings under lateral loading. Analytical models were proposed to estimate the in-plane stiffness of CLT wall panels with openings based on experimental and numerical investigations. The models estimate the in-plane stiffness under consideration of panel thickness, aspect ratios, and size and location of the openings. A sensitivity analysis was conducted to reduce the number of model parameters to those that have a significant impact on the stiffness reduction of CLT wall panels with openings. Finite element models of CLT wall connections were developed and calibrated against experimental tests. The results were incorporated into models of CLT single and coupled shear walls. Finite element analyses were conducted on CLT shear walls and the results in terms of peak displacements, peak loads and energy dissipation were in good agreement when compared against full-scale shear wall tests. A parametric study on single and coupled CLT shear walls was conducted with variation of number and type of connectors. The seismic performance of 56-single and 40-coupled CLT shear walls’ assembles for platform-type construction were evaluated. Deflection formulas were proposed for both single and coupled CLT shear walls loaded laterally in-plane that in addition to the contributions of CLT panels and connections, also account for the influence of adjacent perpendicular walls and floors above and illustrated with examples. Analytical equations were proposed to calculate the resistance of CLT shear walls accounting for the kinematic behaviour of the walls observed in experimental investigations (sliding, rocking and combined sliding-rocking) and illustrated with examples. Different configurations (number and location of hold-downs) of single and coupled CLT walls were considered. The findings presented in this thesis will contribute to the scientific body of knowledge and furthermore will be a useful tool for practitioners for the successful seismic design of CLT platform buildings in-line with the current CSA O86 provisions.
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Towards Timber Mid-Rise Buildings in Chile: Structural Design Challenge and Regulations Gaps

https://research.thinkwood.com/en/permalink/catalogue1634
Year of Publication
2016
Topic
Design and Systems
Market and Adoption
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Santa María, Hernán
Caicedo, Natalia
Montaño, Jairo
Luis Almazán, José
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Design and Systems
Market and Adoption
Keywords
Chile
Mid-Rise
Platform Buildings
Building Codes
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 2995-3002
Summary
At present in Chile it is not possible to construct buildings higher than 3 storeys using timber as structural material. This difficulty is due to high demands of regulations, in addition to cultural reasons, even though there are buildings in timber with more than 5 storeys built in 1910 in Chile (Sewell), which are preserved nowadays. A multidisciplinary team at UC Timber Innovation Center (CIM UC) works on the design of a mid-rise building in timber with a platform frame system for a mining company with few budget restrictions for this specific project. The results will be presented in this paper. Been the economic feasibility the main concern of the UC Timber Innovation Center (CIM UC), in order to spread this technology to a standard client, a larger team is working in parallel towards a proposal of modification of structural design regulations for the construction of mid-rise buildings in Chile with timber platform frame system. The work included an extensive bibliographic revision, followed by structural tests on 2D and 3D timber structures.
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