TY - GEN
T1 - Evaluation of effective width of GFRP-steel composite beams for structural construction
AU - Satasivam, S.
AU - Bai, Y.
AU - Zhao, X. L.
PY - 2013
Y1 - 2013
N2 - Glass fibre reinforced polymer composites have great potentials for structural design and construction. One successful application is the FRP-steel composite beam system consisting of a GFRP deck adhesively bonded on top of a steel girder. By replacing existing concrete slabs with GFRP savings in weight can be achieved, accompanied with high strength in both tension and compression and better corrosion resistance. However, because of distinctions in mechanical properties of concrete and GFRP, the effective width of the resulting composite beam may be different. This paper investigates the effective width of GFRP deck systems adhesively bonded to steel girders using finite element and analytical approaches. The modelling results were first validated through previous experimental results and a parametric study was then conducted to clarify the effects of typical geometric parameters, major mechanical properties and the degree of composite action. Results showed that the span length and flange width of the composite beams are the major factors that influence effective width. Furthermore, the adhesive layer was revealed to have less of an influence on the effective width if full composite action is provided. Existing empirical models for steel and concrete composite beams may be used to analyse GFRP-steel beams because similar normal strain distributions are seen in both GFRP-steel and concrete-steel systems.
AB - Glass fibre reinforced polymer composites have great potentials for structural design and construction. One successful application is the FRP-steel composite beam system consisting of a GFRP deck adhesively bonded on top of a steel girder. By replacing existing concrete slabs with GFRP savings in weight can be achieved, accompanied with high strength in both tension and compression and better corrosion resistance. However, because of distinctions in mechanical properties of concrete and GFRP, the effective width of the resulting composite beam may be different. This paper investigates the effective width of GFRP deck systems adhesively bonded to steel girders using finite element and analytical approaches. The modelling results were first validated through previous experimental results and a parametric study was then conducted to clarify the effects of typical geometric parameters, major mechanical properties and the degree of composite action. Results showed that the span length and flange width of the composite beams are the major factors that influence effective width. Furthermore, the adhesive layer was revealed to have less of an influence on the effective width if full composite action is provided. Existing empirical models for steel and concrete composite beams may be used to analyse GFRP-steel beams because similar normal strain distributions are seen in both GFRP-steel and concrete-steel systems.
UR - http://www.scopus.com/inward/record.url?scp=84881171762&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:84881171762
SN - 9780415633185
T3 - From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012
SP - 149
EP - 154
BT - From Materials to Structures
T2 - 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012
Y2 - 11 December 2012 through 14 December 2012
ER -