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Experimental Behavior of Hollow ± 55° Filament Wound GFRP Tubes Under Monotonic Flexural Loads
In this study, the flexural behavior of hollow ± 55° GFRP tubes is examined experimentally. A total of 15 tubes were tested under four-point bending: three identical tube specimens for five different tube types. The main test parameter was the effect of the tube inner diameter (76.2 mm and 203.2 mm) and the nominal pressure rating (350 kPa, 700 kPa, and 1050 kPa) which is correlated to the tube wall thickness. For each test, the load was measured using a 250 kN load cell, the deflection was measured using a string potentiometer and the strains in the extreme tension and compression fibers were measured using strain gauges with a gauge length of 6 mm. All measurements were recorded at a sample rate of 10 Hz. The results of the tests show that the ultimate moment increased with both tube diameter and wall thickness and that the tubes all exhibited the same failure mechanism: a progressive tensile weakening in the bottom of the tube until an ultimate failure in compression at the top. The mechanical behavior of these tubes is important to understand in order to effectively use them in structural systems, such as concrete-filled FRP tubes.
Experimental Behavior of Hollow ± 55° Filament Wound GFRP Tubes Under Monotonic Flexural Loads
In this study, the flexural behavior of hollow ± 55° GFRP tubes is examined experimentally. A total of 15 tubes were tested under four-point bending: three identical tube specimens for five different tube types. The main test parameter was the effect of the tube inner diameter (76.2 mm and 203.2 mm) and the nominal pressure rating (350 kPa, 700 kPa, and 1050 kPa) which is correlated to the tube wall thickness. For each test, the load was measured using a 250 kN load cell, the deflection was measured using a string potentiometer and the strains in the extreme tension and compression fibers were measured using strain gauges with a gauge length of 6 mm. All measurements were recorded at a sample rate of 10 Hz. The results of the tests show that the ultimate moment increased with both tube diameter and wall thickness and that the tubes all exhibited the same failure mechanism: a progressive tensile weakening in the bottom of the tube until an ultimate failure in compression at the top. The mechanical behavior of these tubes is important to understand in order to effectively use them in structural systems, such as concrete-filled FRP tubes.
Experimental Behavior of Hollow ± 55° Filament Wound GFRP Tubes Under Monotonic Flexural Loads
Lecture Notes in Civil Engineering
Benmokrane, Brahim (editor) / Mohamed, Khaled (editor) / Farghaly, Ahmed (editor) / Mohamed, Hamdy (editor) / Betts, Dillon (author) / Sadeghian, Pedram (author) / Fam, Amir (author)
2022-09-27
7 pages
Article/Chapter (Book)
Electronic Resource
English
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