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- Title
GFRP 型材-混凝土组合梁受弯性能试验.
- Authors
黄海林; 周福林; 言兴; 李 進; 黃 曙
- Abstract
In order to study the flexural behavior of glass fiber reinforced polymer (GFRP) profile-concrete composite beam under static load, the upper flange of GFRP I-shaped profiles was buried in concrete slabs and the three-point loading flexural behavior test of S GFRP profile concrete composite beams were completed. The crack distribution rule. load-span deflection curve. load-strain curve and load-slip curve were obtained. The influences of interface connection method and profile thickness on the bending failure mechanism. bending capacity and normal section ductility of composite beams were analyzed. By comparing and analyzing the variation rule of section strain, mid-span deflection. and interface relative slip of composite beam. The feasibility of placing the upper flange of GFRP 1-shaped profile in the concrete slab as the shear connectors was verified. The results show that the interface connection methods of sand blasting on the contact surface and bolts set on the flange of the GFRP profile can significantly reduce the interface relative slip between the GFRP profile and the concrete slab, thereby improve the overall working performance of the composite beam. The thickness of the GFRP profile has no obvious effect on the bearing capacity of the specimen. but when the thickness of the profile is increased by 48%, its deflection can be reduced by about 20%. The calculation can provide a reference for the theoretical analysis and practical engineering application of the composite beam.
- Subjects
CONCRETE slabs; SAND blasting; COMPOSITE construction; DEAD loads (Mechanics); CONCRETE beams; GLASS fibers; FLANGES
- Publication
Journal of Architecture & Civil Engineering, 2021, Vol 38, Issue 2, p79
- ISSN
1673-2049
- Publication type
Article
- DOI
10.19815/j.jace.2020.05034