Structural evaluation of fiber reinforced hollow wood beams

Kent, Scott; Tingley, Dan

doi:10.2749/222137801796348845

Cited by 10 publications

(5 citation statements)

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“…Experimental and computational investigations on wood-CFRP strengthening were carried out. When compared to findings obtained for beams without reinforcing with CFRP fibres that had an elasticity modulus of 59,000 MPa and tensile strength of 1034 MPa, the study found a 21.5% gain in strength and a minor improvement of 4.69% in stiffness [159]. The influence of externally bonded CFRP lamellas on the stiffness and capacity increase of timber beams was introduced in another study; the stiffness increase was not recognized, and a comparison of the theoretical to the experimental wood-to-CFRP modulus of elasticity ratio revealed a significant variability [47].…”

Section: Effect Of the Cfrp On Flexural Stiffness Enhancement Of Timbermentioning

confidence: 70%

Strengthening Timber Structural Members with CFRP and GFRP: A State-of-the-Art Review

Saad

Lengyel

2022

Polymers

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The application of fibre-reinforced polymers (FRP) for strengthening timber structures has proven its efficiency in enhancing load-bearing capacity and, in some cases, the stiffness of structural elements, thus providing cost-effective and competitive alternatives both in new design and retrofitting existing historical buildings. Over the last few decades, several reinforcing materials and techniques evolved, and considerable progress was made in numerical modelling, especially using the finite element method. As this field of research has become extensive and diversified, as well as numerous contradicting results have emerged, a thorough review is necessary. This manuscript covers the topics of historical preliminaries, reinforcing with carbon and glass fibre composites, bond characteristics, main reinforcing techniques, modelling of knots, and the effects of the fibre waviness on the composite behaviour. A detailed overview is given on the experimental and numerical investigation of mechanics of strengthened beams. A one-of-a-kind table that compares the stiffness improvement observed in several studies with analytical estimates. Attention is drawn to a number of challenges that have arisen, e.g., the moderate stiffness enhancement, composite-to-wood interface, modelling of knots, and strengthening of defected timber members. This paper can be used as a starting point for future research and engineering projects.

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Section: Effect Of the Cfrp On Flexural Stiffness Enhancement Of Timbermentioning

confidence: 70%

Strengthening Timber Structural Members with CFRP and GFRP: A State-of-the-Art Review

Saad

Lengyel

2022

Polymers

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“…The use of HSF sheathing material does not increase the bearing capacity much if mechanical fasteners are applied to connect the wood-based sheets to the timber frame. Kent and Tingley (2001) presented experimental results for high-strength synthetic fibre reinforced panels bonded to hollow beams. They showed that a glass-aramid reinforced plastic (GARP) placed on the narrow dimension in the extreme tension zone increased an average strength and stiffness of elements (by 22% and 5% compared to the unreinforced test samples, respectively).…”

Section: Introductionmentioning

confidence: 99%

Analysis of timber-framed walls coated with CFRP strips strengthened fibre-plaster boards

Premrov

Dobrila

Bedenik

2004

International Journal of Solids and Structures

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“…According to research Blab and Romani, 2000 [26], Dorey and Cleng, 1996 [27] the degree of FRP reinforcement, the pattern of the reinforcement, and the cohesiveness of the bonding surface between the FRP and wood all had an impact on the increase in load-bearing capacity of reinforced beams that was attained. Tingley and Kent (2001) [28] used CFRP to enhance the load capacity and rigidity of timber beams by 21.5 and 5%, respectively. According to Fiorelli and Alves (2002) [29], the rigidity of beams reinforced with glass ber (GFRP) increased by 15-30%.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Effect of FRP Reinforcement Number on the Rotational Behavior of Column-Beam Connection

TÜRKER,

KILINÇARSLAN

2023

Preprint

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Glued laminated timber (glulam) is widely used as a building material to make up lightweight and large span structures. The fundamental idea behind this substance is to use structural adhesives to join multiple layers of dimensioned wood together, increasing the member's strength and stiffness while also enabling the construction of long-lasting structures with striking aesthetics. At the joints of wood structures, steel plates, aluminum plates, or merely wooden components are frequently used. Steel components that are often used as joints can corrode and also aluminum plates are not resistant to heat. For this reason, the use of non-metallic fasteners is one of the topics that have been emphasized lately sheets onto the timber beam by means of glue or epoxy resins. In this study, columns and beams with cross-section dimensions of 120x120-120x240 were connected to each other with steel fasteners. The connected column-beam joints is reinforced with a glass fiber reinforced polymer and carbon fiber reinforced polymer fabric, 1, 2 and 3 times. Reference column-beam joints and reinforced column-beam joints were subjected to load-displacement test under cyclic loading. After the experimental studies, modeling of column-beam connections was made with the finite element program and load-displacement curves were compared. As a result of the experiment, important structural properties such as maximum load carrying capacity, energy consumption capacity, stiffness value were examined. With the effect of the reinforcement, the load carrying capacities, stiffness and energy consumption capacities of the column-beam connections increased. In addition, it is seen that the bearing capacity of the column-beam connections increases with the increase in the number of windings.

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Structural evaluation of fiber reinforced hollow wood beams

Cited by 10 publications

References 0 publications

Strengthening Timber Structural Members with CFRP and GFRP: A State-of-the-Art Review

Strengthening Timber Structural Members with CFRP and GFRP: A State-of-the-Art Review

Analysis of timber-framed walls coated with CFRP strips strengthened fibre-plaster boards

Experimental Investigation of the Effect of FRP Reinforcement Number on the Rotational Behavior of Column-Beam Connection

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