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An Analytical Estimation on Seismic Performance of 3 Story Construction with "Sugi" CLT Panels Depending on Connection Properties

https://research.thinkwood.com/en/permalink/catalogue487
Year of Publication
2014
Topic
Seismic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Miyake, Tatsuya
Matsumoto, Kazuyuki
Tsuchimoto, Takahiro
Isoda, Hiroshi
Kawai, Naohito
Yasumura, Motoi
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Connections
Keywords
Dynamic Properties
Static Properties
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
In this paper, the relations between the load-deformation property of the CLT connections and the seismic performance of the 3 story CLT construction are analytically discussed. The static and the dynamic properties of the CLT connections led each from the static and the dynamic tests were obviously different, however the analytical results based on these properties were agree each with the results of the static and the dynamic tests proving the adequateness of estimated properties. The further study on the dynamic effects of CLT connections is necessary.
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Free
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Static and Dynamic Properties of Retrofitted Timber Beams Using Glass Fiber Reinforced Polymers

https://research.thinkwood.com/en/permalink/catalogue797
Year of Publication
2016
Topic
Design and Systems
Mechanical Properties
Material
Solid-sawn Heavy Timber
Application
Beams
Author
Bru, David
Baeza, Francisco Javier
Varona, Francisco
García-Barba, Javier
Ivorra, Salvador
Publisher
Springer Netherlands
Year of Publication
2016
Country of Publication
Netherlands
Format
Journal Article
Material
Solid-sawn Heavy Timber
Application
Beams
Topic
Design and Systems
Mechanical Properties
Keywords
Damping Ratio
Ductility
Natural Frequency
Glass Fiber Reinforced Polymer
Pine
Reinforcement
Static Properties
Dynamic Properties
Modal Analysis
Four Point Bending Test
Bending Strength
Language
English
Research Status
Complete
Series
Materials and Structures
ISSN
1871-6873
Summary
A study on the static and dynamic properties of sawn timber beams reinforced with glass fiber-reinforced polymer (GFRP) is reported in this paper. The experimental program is focused on the behavior of unidirectional wooden slabs, and the main objective is to fulfill the service state limit upon vibrations using GFRP when an architectonical retrofitting project is necessary. Two different typologies of reinforcement were evaluated on pine wood beams: one applied the composite only on the lower side of the beams, while the other also covered half of the beams depth. For the dynamic characterization, the natural frequency, damping ratio, and dynamic elastic modulus were measured using two different techniques: experimental modal analysis upon the whole beams; and bandwidth method using smaller samples of the same material. The static characterization consisted on four point bending tests, where elastic modulus, bending strength and ductility were assessed. The lower composite had better ductility and bending strength. On the other hand, the U-shaped laminate showed higher stiffness but also at a higher material cost. However, it allowed some ductility, i.e. compressive plasticity, even in the presence of hidden knots. Both dynamic techniques gave similar results and were capable of measuring the structure stiffness, even if short samples were used. Finally, the changes on dynamic properties because of the GFRP did not jeopardize the dynamic performance of the reinforced timber beams.
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Free
Resource Link
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