Composite Behaviour of a Hybrid FRP Bridge Girder and Concrete Deck

Manalo, Allan; Aravinthan, Thiru; Mutsuyoshi, Hiroshi; Matsui, Tetsuya

doi:10.1260/1369-4332.15.4.589

Cited by 39 publications

(20 citation statements)

References 4 publications

(1 reference statement)

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“…This process initiates hairline cracks in the concrete that progress into wide cracks, which significantly reduces the ultimate axial capacity and leads to the brittle failure behavior of concrete columns owing to the damage to the lateral reinforcement (Pantelides, et al, 2013). Steel corrosion costs the Australian economy more than $13 billion per year (Cassidy, et al, 2015), while Canada and the US spend from $50 to 100 billion on repairing deteriorated concrete structures (Tannous, 1997;Manalo, et al, 2012). This issue has motivated many researchers around the world to investigate the use of high-strength and non-corroding reinforcement in building new concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Spiral Spacing and Concrete Strength on Behavior of GFRP-Reinforced Hollow Concrete Columns

et al. 2020

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Hollow concrete columns (HCCs) are one of the preferred construction systems for bridge piers, piles, and poles because they require less material and have a high strength-to-weight ratio. While spiral spacing and concrete compressive strength are two critical design parameters that control HCC behavior, the deterioration of steel reinforcement is becoming an issue for HCCs. This study explored the use of glassfiber-reinforced-polymer (GFRP) bars as longitudinal and lateral reinforcement in hollow concrete columns and investigated the effect of various spiral spacing and different concrete compressive strengths (fc'). Seven hollow concrete columns with inner and outer diameters of 90 mm and 250 mm, respectively, and reinforced with six longitudinal GFRP bars were prepared and tested. The spiral spacing was no spirals, 50 mm, 100 mm, and 150 mm; the fc' varied from 21 to 44 MPa. Test results show that reducing the spiral spacing resulted in increased HCC uniaxial compression capacity, ductility, and confined strength due to the high lateral confining efficiency. Increasing fc', on the other hand, increased the axial-load capacity but reduced the ductility and confinement efficiency due to the brittle behavior of high compressive-strength concrete. The analytical models considering the axial-load contribution of the GFRP bars and the confined concrete core accurately predicted the post-loading behavior of the HCCs.

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Section: Introductionmentioning

confidence: 99%

Effect of Spiral Spacing and Concrete Strength on Behavior of GFRP-Reinforced Hollow Concrete Columns

et al. 2020

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“…Despite the load-slip behavior of the shear FRP-concrete hybrid connections is different from that in steel-concrete composite systems [19,25,26], the conventional design method provided in Eurocode 4 [32] was used in bridge design. It was assumed, that the welded bolts transmitted the longitudinal shear force between the concrete and the FRP beam, ignoring the effect of natural bond between the two and neglecting adhesive bond as well.…”

Section: Shear Connection Designmentioning

confidence: 99%

“…In fact, there are several advantages with the FRP-concrete hybrid girders, referring to the increase of flexural stiffness thus reducing deformability and preventing the buckling phenomena of the FRP profiles or shells. Moreover, the "pseudo-ductile" behavior, necessary for bridges and the existence of composite action between the FRP beam and the concrete slab are a serious advantage of these girders [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Concluding from the existing literatures, several types of shear connections have been researched, listed as follow: coated sand layer [21], adhesive [22], ribs and indents [23,24], steel studs or bolts [19,25,26], FRP dowels [27], FRP shear key [28] and perforated FRP rib [29]. Hence, far, most FRP-concrete connections have utilized joining in which conventional steel shear studs or bolts are used to provide composite action.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on a Novel Shear Connection System for FRP-Concrete Hybrid Bridge Girder

Kulpa

Siwowski

2020

Materials

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The study presents experimental results of an investigation on a novel shear connection system for hybrid bridge girders composed of laminated composite beams and concrete slabs. The special connector comprised of a steel plate and welded bolts is attached to beam’s top flange by adhesive bonding and with a preset torque of nuts. The study’s purpose is to check ductility, safety, reliability and robustness of the shear connection before its implementation in the first Polish composite bridge. Three static push-out tests and fatigue test were performed to evaluate the shear connection behavior under static and cyclic loading. The load–slip curves, shear capacity, fatigue strength and failure mechanisms of the novel shear connectors are discussed. The high-slip modulus indicates that the connectors can very efficiently promote the composite action. The ultimate resistance and the fatigue strength obtained from the test was about 12% and 66% higher than the characteristic resistance and the fatigue strength of common headed studs, according to Eurocode 4, respectively. An estimated global safety factor of 3.67 showed the high safety, reliability and robustness of the novel connection system. The study discusses the structural performance of the proposed connection system, demonstrating its technical suitability.

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“…5 To overcome these obstacles, a number of researchers have worked to combine FRP and conventional materials. [6][7][8][9] Hollaway 10 previously reported that FRP materials were most effectively used in combination with concrete or light-weight foam in sandwich or hybrid composite structures.…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of hybrid composite beams with a bamboo layer and lattice ribs

Zhang

Liu

Wang

et al. 2015

Journal of Reinforced Plastics and Composites

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This paper presents an experimental investigation of flexural behavior of hybrid composite beams with glass fiber reinforced plastics box skins, a polyurethane foam core, a bamboo layer, and lattice ribs. The bamboo layer was placed on the top of a wrapped polyurethane foam core. The lattice ribs were distributed along the longitudinal direction of the beam. Four beams, involving a control specimen, were loaded in four-point bending to validate the effectiveness of the bamboo layer and lattice ribs for increasing the ultimate bending strength of the hybrid composite beams. Compared to the control specimen, a maximum of an approximately 85% increase in the ultimate bending strength can be achieved. The beam with bamboo layer reinforcement and without lattice ribs exhibits the highest stiffness-to-weight ratio, while the beam with both bamboo layer and lattice ribs exhibits the highest strength-to-weight ratio. Meanwhile, various failure modes were summarized, including compressive and crushing failures. Finally, an analytical model to predict the bending stiffness and ultimate bending strength of the hybrid composite beams was proposed. Furthermore, the analytical results were agreed well with test results.

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Composite Behaviour of a Hybrid FRP Bridge Girder and Concrete Deck

Cited by 39 publications

References 4 publications

Effect of Spiral Spacing and Concrete Strength on Behavior of GFRP-Reinforced Hollow Concrete Columns

Effect of Spiral Spacing and Concrete Strength on Behavior of GFRP-Reinforced Hollow Concrete Columns

Experimental Study on a Novel Shear Connection System for FRP-Concrete Hybrid Bridge Girder

Flexural behavior of hybrid composite beams with a bamboo layer and lattice ribs

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