Ductility of Large-scale Dowelled CLT Connections under Monotonic and Cyclic Loading

https://research.thinkwood.com/en/permalink/catalogue2254
Year of Publication
2017
Topic
Connections
Material
CLT (Cross-Laminated Timber)
LVL (Laminated Veneer Lumber)
Application
Shear Walls

Experimental Analysis of Wall Joints in Cross Laminated Timber Panels Requested by Cyclic Load

https://research.thinkwood.com/en/permalink/catalogue2013
Year of Publication
2018
Topic
Mechanical Properties
Connections
Material
CLT (Cross-Laminated Timber)
Application
General Application

Influence of Lamination Aspect Ratios and Test Methods on Rolling Shear Strength Evaluation of Cross Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue2367
Year of Publication
2019
Topic
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
General Application
Author
Li, Minghao
Dong, Wenchen
Lim, Hyungsuk
Year of Publication
2019
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
General Application
Topic
Design and Systems
Mechanical Properties
Keywords
Rolling Shear Strength
Lamination Aspect Ratio
Short-Span Bending
Numerical Modelling
Douglas-Fir
Radiata Pine
Language
English
Research Status
Complete
Series
Journal of Materials in Civil Engineering
Summary
Rolling shear (RS) strength may govern load carrying capacity of cross laminated timber (CLT) subjected to high out-of-plane loading because high RS stresses may be induced in cross layers and wood typically has low RS strength. This study investigates RS strength properties of none-edge-glued CLT via experimental testing (short-span bending tests and modified planar shear tests) and numerical modelling. CLT specimens with different manufacturing parameters including two timber species (New Zealand grown Douglas-fir and Radiata pine), three lamination thickness (20 mm, 35 mm, and 45 mm) and various lamination aspect ratios (4.1~9.8) were studied. The lamination aspect ratio was found to have a substantial impact on RS strength of CLT. Higher aspect ratios led to a significant increase of RS strength and an approximately linear relationship could be established. With similar lamination aspect ratios, the Radiata pine CLT had higher RS strength than the Douglas-fir CLT. The two different test methods, however, yielded comparable RS strength assessments. Numerical models were further developed to study the influence of the test configurations and gaps in the cross layers on stress distributions in the cross layers. It was also found the compressive stresses perpendicular to grain in cross layers had negligible influence on the RS strength evaluations.
Online Access
Free
Resource Link
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