Analytical and Experimental Study of Lateral and Distortional Buckling of FRP Wide-Flange Beams

Davalos, Julio F.; Qiao, Pizhong

doi:10.1061/(asce)1090-0268(1997)1:4(150)

Cited by 64 publications

(13 citation statements)

References 18 publications

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“…As a result, pultruded FRP beams have a great potential to fail in bucking. Buckling failures typically experienced by pultruded I-sections in bending are local buckling [1][2][3][4] and lateraltorsional buckling [5][6]. Despite the high strength of such materials, buckling typically occurs at stress levels that are small fractions of the ultimate strength of the material.…”

Section: Introductionmentioning

confidence: 99%

Improving Local Buckling Capacity of Pultruded I-Beams Using Flange Lips

Ragheb

2007

Journal of Reinforced Plastics and Composites

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An analytical study to investigate the improvement in local buckling capacity of pultruded FRP I-sections as a result of adding flange lips is presented. A finite element model of an I-beam loaded in four point bending was used in the investigation. The results of the model were verified through comparison with reported experimental results. The modeled beams had flange lips of a constant width and varying height. The effect of flange lips on the behavior of the beams has been investigated by comparing them with the behavior of beams with no flange lips. The results show that providing the compression flanges with lips significantly improves the buckling and ultimate loads of the beams.

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Section: Introductionmentioning

confidence: 99%

Improving Local Buckling Capacity of Pultruded I-Beams Using Flange Lips

Ragheb

2007

Journal of Reinforced Plastics and Composites

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“…Because of the geometrical (i.e., thin-walled shapes) and material (i.e., Eglass fiber embedded in polymer matrix) properties, the FRP structures usually undergo large deformation and are vulnerable to global and local buckling before reaching the material strength failure under service loads. Thus, buckling is one of the most likely modes of failure for thin-walled FRP structures [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…A series of lateral buckling tests on small-scale pultruded E-glass FRP beams was carried out by Brooks and Turvey [7] and Turvey [8]; the effects of load position on the lateral buckling response of FRP I-sections were investigated. The flexural-torsional and lateral-distortional buckling of composite FRP simply supported and cantilever I-beams were studied both experimentally and analytically by Davalos and Qiao [1] and Qiao et al [9], respectively.…”

Section: Introductionmentioning

confidence: 99%

Flexural–torsional buckling of fiber-reinforced plastic composite open channel beams

Shan

Qiao

2005

Composite Structures

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“…Similarly, their hollow sections are prone to compression (bending) buckling failure [4,5], web-flange junction failure in the compression zone [6,7] and local buckling of walls due to in-plane compression [8][9][10].…”

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confidence: 99%

Flexural behaviour of multi-celled GFRP composite beams with concrete infill: Experiment and theoretical analysis

Muttashar

Manalo

Karunasena

et al. 2017

Composite Structures

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This research introduces multi-celled glass fibre reinforced polymer (GFRP) beam sections partially filled with concrete. Pultruded GFRP square tubes (125 mm x125 mm x 6.5 mm) were bonded together using epoxy adhesives to form the beams using 2 to 4 cells. Concrete with 15 and 32 MPa compressive strengths was used to fill the top cell of the beams. These beams were then tested under static four-point bending and their behaviour was compared with hollow beams. The results showed that up to 27% increase in strength was achieved by multi-celled compared to a single cell beam. The beams with concrete infill failed at 38% to 80% higher load and exhibited 10 to 22% higher stiffness than their hollow counterparts. The increase in the compressive strength of the concrete infill from 15 MPa to 32 MPa resulted in up to 14% increase in the failure load but did not enhance the flexural stiffness. Finally, the proposed prediction equation which account for the combined effect of shear and flexural stresses showed a good agreement with the experimental results for hollow cells and up to 3 cells of concrete filled beams. The bearing stress equation gave a better estimation for 4-cell filled section. KeywordsComposite beam, multi-cell beams, concrete in-fill, flexural behaviour, theoretical prediction. All Tables.pdf [Table] To view all the submission files, including those not included in the PDF, click on the manuscript title on your EVISE Homepage, then click 'Download zip file'. RESEARCH PAPER AbstractThis research introduces multi-celled glass fibre reinforced polymer (GFRP) beam sections partially filled with concrete. Pultruded GFRP square tubes (125 mm x125 mm x 6.5 mm)were bonded together using epoxy adhesives to form the beams using 2 to 4 cells. Concrete

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Analytical and Experimental Study of Lateral and Distortional Buckling of FRP Wide-Flange Beams

Cited by 64 publications

References 18 publications

Improving Local Buckling Capacity of Pultruded I-Beams Using Flange Lips

Improving Local Buckling Capacity of Pultruded I-Beams Using Flange Lips

Flexural–torsional buckling of fiber-reinforced plastic composite open channel beams

Flexural behaviour of multi-celled GFRP composite beams with concrete infill: Experiment and theoretical analysis

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