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Deformability of Glued Laminated Beams with Combined Reinforcement

https://research.thinkwood.com/en/permalink/catalogue2835
Year of Publication
2020
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
Sobczak-Piastka, Justyna
Gomon, S. Svyatoslav
Polishchuk, Mykola
Homon, Sviatoslav
Gomon, Petro
Karavan, Victor
Organization
UTP University of Science and Technology
Publisher
MDPI
Year of Publication
2020
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Keywords
Reinforcement
Bending Behaviour
Research Status
Complete
Series
Buildings
Summary
Wood is one of the most popular renewable natural materials. Nowadays, raw wood is hardly ever used in the construction industry. It has been substituted by glued laminated wood that is processed with the use of high-tech methods, thus eliminating the principal flaws and defects of the natural material. The deformability of glued laminated beams with combined reinforcement has been studied, under which the steel reinforcement of the periodic profile was placed in the dappings of the upper compressed zone, while ribbon-reinforced composite was glued to the bottom of the stretched zone. The graphical charts for the layer change of the deformations of wood, steel, and composite reinforcement from the beginning of the loading application to the moment of destruction are presented.
Online Access
Free
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Experimental Investigation of Cracked End-notched Glulam Beams Repaired with GFRP Bars

https://research.thinkwood.com/en/permalink/catalogue2444
Year of Publication
2019
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams

Numerical Modelling of Glulam Beams Externally Reinforced with CFRP Plates

https://research.thinkwood.com/en/permalink/catalogue1624
Year of Publication
2016
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
Glišovic, Ivan
Pavlovic, Marko
Stevanovic, Boško
Todorovic, Marija
Year of Publication
2016
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Keywords
Bending Behaviour
CFRP
Finite Element Model
Load Deflection
Stiffness
Load Carrying Capacity
Strain
Reinforcement
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 2634-2641
Summary
Timber beams can effectively be reinforced using externally bonded fibre reinforced polymer (FRP) composites. This paper describes a nonlinear 3-dimensional finite element model which was developed in order to accurately simulate the bending behaviour of unreinforced and carbon FRP plate reinforced glulam beams. The model incorporates suitable constitutive relationship for each material and utilises anisotropic plasticity theory for timber in compression. Failure of beams was modelled based on the maximum stress criterion. The results of the finite element analysis showed a good agreement with experimental findings for load-deflection behaviour, stiffness, ultimate load carrying capacity and strain profile distribution of unreinforced and reinforced beams. The proposed model can be used to examine the effect of different geometries or materials on the mechanical performance of reinforced system.
Online Access
Free
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Structural Tests of Concrete Composite-Cross-Laminated Timber Floors

https://research.thinkwood.com/en/permalink/catalogue2830
Year of Publication
2017
Topic
Connections
Mechanical Properties
Serviceability
Material
CLT (Cross-Laminated Timber)
Timber-Concrete Composite
Application
Floors
Decking
Author
Higgins, Christopher
Barbosa, R. Andre
Blank, Curtis
Organization
Oregon State University
Publisher
Oregon State University
Year of Publication
2017
Format
Report
Material
CLT (Cross-Laminated Timber)
Timber-Concrete Composite
Application
Floors
Decking
Topic
Connections
Mechanical Properties
Serviceability
Keywords
Bending Behaviour
Shear Connection
Long-term Behaviour
TCC
Orthrotropic Plates
Research Status
Complete
Summary
Experimental tests of a composite concrete-cross-laminated timber (CLT) floor system were conducted. The floor system was constructed with 5-ply CLT panels (6.75 in. thick) made composite with a 2.25 in. thick reinforced concrete topping slab. Four series of tests were performed using different specimen configurations and laboratory testing methods. Tests included: (1) Comparative one-way bending tests (CB) to evaluate the performance of alternative shear connectors used to join the concrete slab to the CLT panel; (2) Orthotropic stiffness and strength tests (OS) to evaluate the elastic orthotropic stiffness of the deck system and provide strength results for weak-axis bending and negative moment strength; (3) Full-scale system performance tests (FS) of a continuous floor span to establish strength at realistic span lengths and the influence of continuity; and (4) Long-term deformation tests (LT) to investigate creep deflections of the composite concrete-CLT floor system considering positive and negative bending influences. Results include overall strength, elastic stiffness values, deformation capacity, slip deformations along the concrete-CLT interface, predicted neutral axis locations in the composite concrete-CLT systems, and connection deformations.
Online Access
Free
Resource Link
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