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8 records – page 1 of 1.

Creep and Duration Of Load Characteristics of Cross Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue692
Year of Publication
2014
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Nakajima, Shiro
Miyatake, Atsushi
Shibuwasa, Tatsuya
Araki, Yasuhiro
Yamaguchi, Nobuyoshi
Haramiishi, Takeshi
Ando, Naoto
Yasumura, Motoi
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Cedar
Creep
Duration of Load
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
Creep and duration of load characteristics of cross laminated timber (CLT) were evaluated from the test results of creep and duration of tests. Japanese Ceder (Cryptomeria japonica) was chosen for the specie for the laminations of the test specimens and ...
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Duration-Of-Load and Size Effects on the Rolling Shear Strength of Cross Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue191
Year of Publication
2015
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application

Duration-Of-Load Effect on the Rolling Shear Strength of Cross Laminated Timber: Duration-Of-Load Tests and Damage Accumulation Model

https://research.thinkwood.com/en/permalink/catalogue228
Year of Publication
2015
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Li, Yuan
Lam, Frank
Organization
University of British Columbia
Year of Publication
2015
Country of Publication
Canada
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Duration of Load
Long-term
Mountain Pine Beetle
Rolling Shear Strength
Stiffness
Strength
Stress Distribution
Language
English
Research Status
Complete
Summary
In this study, the duration-of-load (DOL) effect on the rolling shear strength of cross laminated timber (CLT) was evaluated. A stress-based damage accumulation model is chosen to evaluate the DOL effect on the rolling shear strength of CLT. This model incorporates the established short-term rolling shear strength of material and predicts the time to failure under arbitrary loading history. The model was calibrated and verified based on the test data from low cycle trapezoidal fatigue tests (the damage accumulation tests). The long-term rolling shear behaviour of CLT can then be evaluated from this verified model. As the developed damage accumulation model is a probabilistic model, it can be incorporated into a time-reliability study. Therefore, a reliability assessment of the CLT products was performed considering short-term and snow loading cases. The reliability analysis results and factors reflecting the DOL effect on the rolling shear strength of CLT are compared and discussed. The results suggest that the DOL rolling shear strength adjustment factor for CLT is more severe than the general DOL adjustment factor for lumber; and, this difference should be considered in the introduction of CLT into the building codes for engineered wood design.
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Low Cycle Fatigue Tests and Damage Accumulation Models on the Rolling Shear Strength of Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1448
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Li, Yuan
Lam, Frank
Publisher
Springer Japan
Year of Publication
2016
Country of Publication
Japan
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Rolling Shear Strength
Rolling Shear Stress
Duration of Load
Fatigue Tests
Damage
Language
English
Research Status
Complete
Series
Journal of Wood Science
ISSN
1611-4663
Online Access
Free
Resource Link
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Reassessment of the Integrity of a Partially Failed Glulam Structure

https://research.thinkwood.com/en/permalink/catalogue128
Year of Publication
2014
Topic
Design and Systems
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Roofs

Reliability Analysis and Duration-of-Load Strength Adjustment Factor of the Rolling Shear Strength of Cross Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1415
Year of Publication
2016
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Li, Yuan
Lam, Frank
Publisher
Springer Japan
Year of Publication
2016
Country of Publication
Japan
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Duration of Load
Rolling Shear Strength
Damage Accumulation Model
Reliability
Language
English
Research Status
Complete
Series
Journal of Wood Science
ISSN
1611-4663
Online Access
Free
Resource Link
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Time-Dependent Behavior of Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1111
Year of Publication
2014
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Pirvu, Ciprian
Organization
FPInnovations
Year of Publication
2014
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Creep
Duration of Load
Time Dependent Behavior
Stiffness
Deflection
Language
English
Research Status
Complete
Summary
Cross laminated timber (CLT) panels were manufactured and tested to assess their time dependent behaviour. This study is intended to help guide the development of an appropriate test method and acceptance criteria to account for duration of load and creep effects in the design of structures using CLT.
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US Edition - Chapter 6: Duration of Load and Creep Factors for Cross-Laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue825
Year of Publication
2013
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Pirvu, Ciprian
Douglas, Bradford
Yeh, Borjen
Organization
FPInnovations
Binational Softwood Lumber Council
Year of Publication
2013
Country of Publication
Canada
United States
Format
Book Section
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Creep
Duration of Load
Time Dependent Behavior
Language
English
Research Status
Complete
Series
CLT Handbook - US Edition
ISBN
978-0-86488-553-1
ISSN
1925-0495
Summary
Cross-laminated timber (CLT) products are used as load-carrying slab and wall elements in structural systems, thus load duration and creep behavior are critical characteristics that must be addressed in structural design. Given its lay-up construction with orthogonal arrangement of layers bonded with structural adhesive, CLT is more prone to time-dependent deformations under load (creep) than other engineered wood products such as structural glued-laminated timber. Time dependent behavior of structural wood products is addressed in design standards by load duration factors that adjust design properties. Since CLT has been recently introduced into the North American market, the current design standards and building codes do not specify load duration and creep adjustment factors for CLT. Until this can be rectified, an approach is proposed in this Chapter for adopter of CLT systems in the United States. This includes not only load duration and service factors, but also an approach to accounting for creep in CLT structural elements.
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8 records – page 1 of 1.