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Evaluate Bearing Stress of Glulam Using Digital Image Correlation

https://research.thinkwood.com/en/permalink/catalogue687
Year of Publication
2014
Topic
Connections
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Author
Jeong, Gi-Young
Park, Moon-Jae
Year of Publication
2014
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Topic
Connections
Mechanical Properties
Keywords
Digital Image Correlation
Drift Pins
Bearing Stress
Strain Distribution
Fracture Behaviour
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
The goal of this study is to evaluate the effect of different sizes of drift pins (12mm, 16mm, 20mm, 30mm) and six orientations of glulam associated with pin positions (RL, TL, LR, TR, LT, RT) on bearing stress and strain distributions of glulam using digital image correlation (DIC). Different bearing stresses, strain distributions, and fracture behaviours associated with the orientation of the glulam and pin sizes were observed. As the diameter of drift pins increased, the bearing strength increased regardless of the orientation. However, the trends of failure behaviours did not change by the pin size.
Online Access
Free
Resource Link
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Study on Seismic Performance of Building Construction with Cross Laminated Timber: Part 14: Deformation of Joints and Fracture Behavior on Three Story Full-Scale Static Load Test

https://research.thinkwood.com/en/permalink/catalogue981
Year of Publication
2013
Topic
Seismic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Nasu, Hideyuki
Yahaura, Sota
Gosei, Murakami
Goto, Hiroshi
Hamamoto, Takashi
Miyake, Tatsuya
Yasumura, Motoi
Organization
Architectural Institute of Japan
Year of Publication
2013
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Connections
Keywords
Static Load Tests
Mid-Rise
Fracture Behavior
Full Scale
Seismic Performance
Research Status
Complete
Summary
This paper gives a bibliographical review of the finite element methods (FEMs) applied in the analysis of wood. The added bibliography at the end of this article contains 300 references to papers and conference proceedings on the subject that were published between 1995 and 2004. The following topics are included: Wood as a construction material—material and mechanical properties; wood joining and fastening; fracture mechanics problems; drying process, thermal properties; other topics. Wood products and structures—lumber; glulam, panels, wood composites; trusses and frames; floors, roofs; bridges; other products/structures.
Online Access
Free
Resource Link
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Study on Shear Performance of CLT Joints Using Long Vise Part 1 Summary of Experiments and Test Pieces

https://research.thinkwood.com/en/permalink/catalogue1009
Year of Publication
2014
Topic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Nasu, Hideyuki
Township, Onishi
Karibe, Yuki
Organization
Architectural Institute of Japan
Year of Publication
2014
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Connections
Keywords
Floor-Wall Connection
Mid-Rise
Shear Test
Fracture Behavior
Long Vise
Joints
Research Status
Complete
Summary
Innovative steel - Cross Laminated Timber (CLT) connections are key elements in developing hybrid steeltimber composite floors with desirable strength and serviceability performance. The performance of floors mainly relies on the load-slip behavior of connections for composite action. The long-term behavior of timber is mainly affected by elastic and mechano-sorptive creep, resulting in a different total slip than the initially observed one. In this study, the long-term load-slip behavior of two different types of connections with pre-tensioned high-strength bolts and dog screws are experimentally assessed at two different stress levels. Furthermore, the effect of grain orientation on the results is studied by considering specimens with parallel and perpendicular grain orientations under sustained loads. Load-slip curves show a stable performance of a composite action over time. Furthermore, an analytical model is fitted to the loadslip vs time data which can be used to predict long-term behavior of floors in future.
Online Access
Free
Resource Link
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Study on Shear Performance of CLT Joints Using Long Vise Part 2 Result of Experiments, Consideration and Conclusion

https://research.thinkwood.com/en/permalink/catalogue1008
Year of Publication
2014
Topic
Connections
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Township, Onishi
Nasu, Hideyuki
Karibe, Yuki
Organization
Architectural Institute of Japan
Year of Publication
2014
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Connections
Mechanical Properties
Keywords
Floor-Wall Connection
Joints
Mid-Rise
Shear Test
Fracture Behavior
Long Vise
Research Status
Complete
Summary
Innovative steel - Cross Laminated Timber (CLT) connections are key elements in developing hybrid steeltimber composite floors with desirable strength and serviceability performance. The performance of floors mainly relies on the load-slip behavior of connections for composite action. The long-term behavior of timber is mainly affected by elastic and mechano-sorptive creep, resulting in a different total slip than the initially observed one. In this study, the long-term load-slip behavior of two different types of connections with pre-tensioned high-strength bolts and dog screws are experimentally assessed at two different stress levels. Furthermore, the effect of grain orientation on the results is studied by considering specimens with parallel and perpendicular grain orientations under sustained loads. Load-slip curves show a stable performance of a composite action over time. Furthermore, an analytical model is fitted to the loadslip vs time data which can be used to predict long-term behavior of floors in future.
Online Access
Free
Resource Link
Less detail