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In-plane shear compression behaviour of steel-glass composite beams with laminated glass webs
HighlightsIn-plane shear compression of composite beams with laminated glass webs are experimentally evaluated.Typical failure modes related to edge delamination and stress trajectories are analyzed.Discussions are made for the strength improvement of composite beams due to adhesive joining.Proposed analytical in strength prediction of studied structural mechanism is demonstrated to be satisfactory.
AbstractSteel-glass composite beams with the combination of glass webs and steel flanges are known to be able to attain good ductility in contrast to pure glass panels. As a concentrated load is introduced away from the middle of the beam span, its resultant stress concentration can induce shear compression failure on the glass web which is distinguished itself from flexure failure as reported in the literature. This paper presents an experimental study on the in-plane shear compression behaviour of composite beams with laminated glass webs. Distinct failure mode related to load induced edge delamination traces on the glass web is reported. Based on the test results, the distribution of acting strains and stresses within the composite beams is plotted. The formation of inclined cracks on the glass web is justified as the stress trajectories are prone to bend to form a diagonal tension stress state. It is shown from the response of composite beams that the strength and elastic stiffness of composite beams are improved when the adhesives with better mechanical properties are used. Afterwards, it is shown that the strengths of test specimens are greater than these of counterpart glass stabilizing fins or stiffening fins due to the flexibility of adhesive joining. Finally, the test strengths have been evaluated based on the edge delamination traces and the equilibrium of the energy dissipation of proposed mechanism. It is demonstrated that the proposed mechanism in contrast to referred formulae is able to give a better prediction of strength.
In-plane shear compression behaviour of steel-glass composite beams with laminated glass webs
HighlightsIn-plane shear compression of composite beams with laminated glass webs are experimentally evaluated.Typical failure modes related to edge delamination and stress trajectories are analyzed.Discussions are made for the strength improvement of composite beams due to adhesive joining.Proposed analytical in strength prediction of studied structural mechanism is demonstrated to be satisfactory.
AbstractSteel-glass composite beams with the combination of glass webs and steel flanges are known to be able to attain good ductility in contrast to pure glass panels. As a concentrated load is introduced away from the middle of the beam span, its resultant stress concentration can induce shear compression failure on the glass web which is distinguished itself from flexure failure as reported in the literature. This paper presents an experimental study on the in-plane shear compression behaviour of composite beams with laminated glass webs. Distinct failure mode related to load induced edge delamination traces on the glass web is reported. Based on the test results, the distribution of acting strains and stresses within the composite beams is plotted. The formation of inclined cracks on the glass web is justified as the stress trajectories are prone to bend to form a diagonal tension stress state. It is shown from the response of composite beams that the strength and elastic stiffness of composite beams are improved when the adhesives with better mechanical properties are used. Afterwards, it is shown that the strengths of test specimens are greater than these of counterpart glass stabilizing fins or stiffening fins due to the flexibility of adhesive joining. Finally, the test strengths have been evaluated based on the edge delamination traces and the equilibrium of the energy dissipation of proposed mechanism. It is demonstrated that the proposed mechanism in contrast to referred formulae is able to give a better prediction of strength.
In-plane shear compression behaviour of steel-glass composite beams with laminated glass webs
Wang, Zhi-Yu (author) / Shi, Yalong (author) / Wang, Qing-Yuan (author) / Wu, Yaoyong (author) / He, Mingde (author)
Engineering Structures ; 150 ; 892-904
2017-07-24
13 pages
Article (Journal)
Electronic Resource
English
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