Experimental Verification of the Structural Glass Beam-Columns Strength

This paper deals with experimental research of axially and laterally loaded members made of structural (laminated) glass. The purpose of the research is the evaluation of buckling strength and actual behaviour of the beam-columns due to absence of standards for design of glass load-bearing structure...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-10, Vol.245 (3), p.32068
Main Authors: Pešek, Ondřej, Melcher, Jindřich, Balázs, Ivan
Format: Article
Language:English
Subjects:
Annealing
Axial forces
Beam-columns
Bending moments
Buckling
Design standards
Evaluation
Foils
Load bearing elements
Safety glass
Steel columns
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Summary:This paper deals with experimental research of axially and laterally loaded members made of structural (laminated) glass. The purpose of the research is the evaluation of buckling strength and actual behaviour of the beam-columns due to absence of standards for design of glass load-bearing structures. The experimental research follows the previous one focusing on measuring of initial geometrical imperfections of glass members, testing of glass beams and columns. Within the frame of the research 9 specimens were tested. All of them were of the same geometry (length 2000 mm, width 200 mm and thickness 16 mm) but different composition - laminated double glass made of annealed glass or fully tempered glass panes bonded together by PVB or EVASAFE foil. Specimens were at first loaded by axial force and then by constantly increasing bending moment up to failure. During testing lateral deflections, vertical deflection and normal stresses at mid-span were measured. A maximum load achieved during testing has been adopted as flexural-lateral-torsional buckling strength. The results of experiments were statistically evaluated according to the European standard for design of structures EN 1990, appendix D. There are significant differences between specimens made of annealed glass or fully tempered glass. Differences between specimens loaded by axial forces 1 kN and 2 kN are negligible. The next step was to determine the design strength by calculation procedure based on buckling curves approach intended for design of steel columns and develop interaction criterion for glass beams-columns.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/245/3/032068