Responses of PFRP Cantilevered Channel Beams under Tip Point Loads

Thumrongvut, Jaksada; Seangatith, Sittichai

doi:10.4028/www.scientific.net/kem.471-472.578

Cited by 7 publications

(6 citation statements)

References 6 publications

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“…Resin also sticks the fibres together and transfers forces between them. Fibres provide strength and stiffness to FRP parts [3,[13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Review of Fibre Reinforced Polymer Bridges

Qureshi

2023

Fibers

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Fibre-reinforced polymer composites (FRPs) offer various benefits for bridge construction. Lightweight, durability, design flexibility and fast erection in inaccessible areas are their unique selling points for bridge engineering. FRPs are used in four bridge applications: (1) FRP rebars/tendons in concrete; (2) repair and strengthening of existing bridges; (3) new hybrid–FRP bridges with conventional materials and (4) all–FRP composite new bridges made entirely of FRP materials. This paper reviews FRP bridges, including all–FRP and hybrid–FRP bridges. FRP bridges’ history, materials, processes and bridge components—deck, girder, truss, moulded parts and cables/rebars are considered. This paper does not discuss the use of FRP as an architectural element and a strengthening system. While lack of design codes, material specifications and recycling are the major challenges, the high cost of FRPs still remains the most critical barrier to the progress of FRPs in bridges.

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“…Resin also sticks the fibres together and transfers forces between them. Fibres provide strength and stiffness to FRP parts [3,[13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Review of Fibre Reinforced Polymer Bridges

Qureshi

2023

Fibers

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“…The worldwide use of pultruded fiber reinforced polymer (pultruded FRP) composite materials in primary and secondary structural building systems has increased since the 1990s, with significant applications for marine structures, cooling towers, pedestrian and bridge decks, and other civil structures [1], while infrastructure applications include lighting poles [2]. Civil engineering structures made of the pultruded FRP composites have been shown to provide efficient and economical applications in new structural elements, and in the rehabilitation and strengthening of imperfect members [3]. Pultruded FRP structural profiles are a brilliant choice because they have many beneficial engineering properties over the conventional building materials (structural steel and aluminium) such as high strength-to-weight ratio, low maintenance, excellent corrosion resistance, low coefficient of thermal expansion, transportation and utility facilities, and easy-to-construct structures [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Flexural-Torsional Buckling of Pultruded Fiber-Reinforced Polymer Angle Beams under Eccentric Loading

Thumrongvut

Pakwan

Krathumklang

2020

MSF

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In this paper, the experimental study on the pultruded fiber-reinforced polymer (pultruded FRP) angle beams subjected to transversely eccentric load are presented. A summary of critical buckling load and buckling behavior for full-scale flexure tests with various span-to-width ratios (L/b) and eccentricities are investigated, and typical failure mode are identified. Three-point flexure tests of 50 pultruded FRP angle beams are performed. The E-glass fibre/polyester resin angle specimens are tested to examine the effect of span-to-width ratio of the beams on the buckling responses and critical buckling loads. The angle specimens have the cross-sectional dimension of 76x6.4 mm with span-to-width ratios, ranging from 20 to 40. Also, four different eccentricities are investigated, ranging from 0 to ±2e. Eccentric loads are applied below the horizontal flange in increments until beam buckling occurred. Based upon the results of this study, it is found that the load and mid-span vertical deflection relationships of the angle beams are linear up to the failure. In contrast, the load and mid-span lateral deflection relationships are geometrically nonlinear. The general mode of failure is the flexural-torsional buckling. The eccentrically loaded specimens are failed at critical buckling loads lower than their concentric counterparts. Also, the quantity of eccentricity increases as buckling load decreases. In addition, it is noticed that span-to-width ratio increases, the buckling load is decreased. The eccentric location proved to have considerable influence over the buckling load of the pultruded FRP angle beams.

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“…[2]. Buildings and structures made of the FRP composites have been shown to provide efficient and economical applications in new structural construction, and in strengthening of imperfect structures [3]. The constituent materials of these FRP components tend to be E-glass fibers and low cost resin systems (polyester or vinyl ester).…”

Section: Introductionmentioning

confidence: 99%

Testing and Characterization of Simply Supported Pultruded FRP Angle Beams Using Bending Tests

Thumrongvut

2018

KEM

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Structural performance and buckling behaviors of pultruded fiber-reinforced polymer (PFRP) angle profile beams under three-point bending tests are presented in this paper. The angle specimens were evaluated to investigate the effect of unbraced length of the beams on the buckling responses and critical buckling loads. In total, sixteen specimens, including eight span-to-width ratios (L/b) were tested. The dimension of the angle profile was commercially available 76x6.4 mm. The span-to-width ratios of the specimens were in the range of approximately 13 to 59. The constituent materials used for the angle profiles consist of unidirectional E-glass fibers and polyester resin. From the bending tests, the load-deformation relationships and failure modes of angle beams were reported. The experimental results indicated that the critical buckling load decreases as the span-to-width ratio increases. The degree of flexural-torsional buckling is directly related to span-to-width ratio. Furthermore, the comparison between the critical buckling loads obtained from experimental study and prediction using methods provided in AISC-LRFD design equation for PFRP angle profile beams showed an unsatisfactory correlation of the critical buckling loads.

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Responses of PFRP Cantilevered Channel Beams under Tip Point Loads

Cited by 7 publications

References 6 publications

A Review of Fibre Reinforced Polymer Bridges

A Review of Fibre Reinforced Polymer Bridges

Flexural-Torsional Buckling of Pultruded Fiber-Reinforced Polymer Angle Beams under Eccentric Loading

Testing and Characterization of Simply Supported Pultruded FRP Angle Beams Using Bending Tests

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