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Braced Frame System for Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue2527
Year of Publication
2020
Topic
Design and Systems
Seismic
Material
Glulam (Glue-Laminated Timber)
Application
Hybrid Building Systems
Frames
Author
Iqbal, Asif
Organization
University of Northern British Columbia
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
Glulam (Glue-Laminated Timber)
Application
Hybrid Building Systems
Frames
Topic
Design and Systems
Seismic
Keywords
Lateral Load Resisting Systems
Sustainability
Post-Tensioned
Connections
Braced Frame Model
Timber-Steel Hybrid
Language
English
Research Status
Complete
Summary
Advanced sustainable lateral load resisting systems that combine ductile and recyclable materials offer a viable solution to resist seismic load effects in environmentally responsible ways. This paper presents the seismic response of a post-tensioned timber-steel hybrid braced frame. This hybrid system combines glulam frame with steel braces to improve lateral stiffness while providing self-centreing capability under seismic loads. The proposed system is first presented. A detailed numerical model of the proposed system is then developed with emphasis on the connections and inelastic response of bracing members. Various types of braced frames including diagonal, cross and chevron configurations are numerically examined to assess the viability of the proposed concept and to confirm the efficiency of the system. A summary of initial findings is presented to demonstrate usefulness of the hybrid system. The results demonstrate that the proposed system increases overall lateral stiffness and ductility while still being able to achieve self-centring. Some additional information on connection details are provided for implementation in practical structures. The braced-frame solution is expected to widen options for lateral load resisting systems for mid-to-high-rise buildings.
Online Access
Free
Resource Link
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Innovative Engineered Timber Building Systems for Non-Residential Applications, Utilising Timber Concrete Composite Flooring Capable of Spanning Up to 8 to 10m

https://research.thinkwood.com/en/permalink/catalogue1933
Year of Publication
2010
Topic
Market and Adoption
Design and Systems
Cost
Environmental Impact
Mechanical Properties
Material
Timber-Concrete Composite
Application
Floors
Frames

Laboratory Tests on a Post-Tensioned Timber Frame

https://research.thinkwood.com/en/permalink/catalogue2206
Year of Publication
2017
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Frames
Author
Claude Leyder
Flavio Wanninger
Eleni Chatzi
Andrea Frangi
Organization
ETH Zurich
Year of Publication
2017
Country of Publication
Switzerland
Format
Report
Material
Glulam (Glue-Laminated Timber)
Application
Frames
Topic
Mechanical Properties
Keywords
Post-Tensioned
Pres-Lam
Pushover Test
Modal Vibration Tests
Language
English
Research Status
Complete
Series
IBK Bericht
Online Access
Free
Resource Link
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Solutions for Upper Mid-Rise and High-Rise Mass Timber Construction: Seismic Performance of Braced Mass Timber Frames, Year 1

https://research.thinkwood.com/en/permalink/catalogue2640
Year of Publication
2019
Topic
Seismic
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Frames
Author
Chen, Zhiyong
Popovski, Marjan
Symons, Paul
Organization
FPInnovations
Year of Publication
2019
Format
Report
Material
Glulam (Glue-Laminated Timber)
Application
Frames
Topic
Seismic
Design and Systems
Keywords
Lateral Load
Seismic Performance
Braced Frames
Language
English
Research Status
Complete
Summary
Braced mass timber (MT) frames are one of the most efficient structural systems to resist lateral loads induced by earthquakes or high winds. Although braced frames are presented as a system in the National Building Code of Canada (NBCC), no design guidelines currently exist in CSA O86. That not only leaves these efficient systems out of reach of designers, but also puts them in danger of being eliminated from NBCC. The main objective of this project was to develop the technical information needed for development of design guidelines for braced MT frames as a lateral load resisting system in CSA O86. In the first year of the project, the seismic performance of thirty (30) braced MT frames with riveted connections with various numbers of storeys, storey heights, and bay aspect ratios were studied by conducting non-linear pushover and dynamic time-history analyses. Also, fifteen (15) glulam brace specimens using bolted connections with different slenderness ratios were tested under monotonic and cyclic loading. Results from this multi-year project will form the basis for developing comprehensive design guidelines for braced frames in CSA O86.
Online Access
Free
Resource Link
Less detail