Experimental Verification of the Structural Glass Beam-Columns Strength

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS

土木建筑工程

Peek, Ondej^1 ; Melcher, Jindich^1 ; Balázs, Ivan^1

Institute of Metal and Timber Structures, Faculty of Civil Engineering, Brno University of Technology, Veveí 331/95, Brno

602 00, Czech Republic^1

关键词: Calculation procedure;    Experimental research;    Experimental verification;    Increasing bending;    Initial geometrical imperfections;    Lateral-torsional buckling;    Loadbearing structure;    Vertical deflections;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/3/032068/pdf
DOI  :  10.1088/1757-899X/245/3/032068

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

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.