Experimental Verification of the Buckling Strength of Structural Glass Columns
Abstract
This paper deals with experimental research of axially loaded members made of structural (laminated) glass. The purpose of the research is the evaluation of buckling strength and actual behaviour of the columns due to the 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. Within the frame of the research 15 specimens were tested. All of them were of the same geometry (length 1500 mm, width 150 mm and thickness 12 mm) but had different composition – monolithic glass or laminated double or triple glass made of annealed or fully tempered glass panes bonded together by PVB or EVASAFE foil. Due to rectangular cross section and considered boundary conditions, flexural buckling perpendicular to the weak axis of the cross section occurred. During the testing, lateral deflection and normal stresses at mid-span were measured. Maximum force achieved during the testing has been adopted as buckling strength. Euler’s critical loads and equivalent geometrical imperfections were evaluated using a Southwell’s method. 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 the specimens made of annealed glass or fully tempered glass and between the specimens laminated with using PVB or EVASAFE foil – the differences are in the values of buckling strengths and load – deflection, load - stress plots.
Full text
Procedia Engineering 161 ( 2016 ) 556 – 562 1877-7058 © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of the organizing committee of WMCAUS 2016 doi: 10.1016/j.proeng.2016.08.691 ScienceDirect Available online at www.sciencedirect.com :RUOG0XOWLGLVFLSOLQDU\&LYLO(QJLQHHULQJ$UFKLWHFWXUH8UEDQ3ODQQLQJ6\PSRVLXP :0&$86 ([SHULPHQWDO9HULILFDWLRQRIWKH%XFNOLQJ6WUHQJWKRI6WUXFWXUDO *ODVV&ROXPQV 2QGĜHM3HãHND0DUWLQ+RUiþHND-LQGĜLFK0HOFKHUD aInstitute of Metal and Timber Structures, Faculty of Civil Engineering, Brno University of Technology, VeveĜí 331/95, Brno 602 00, Czech Republic $EVWUDFW 7KLVSDSHUGHDOVZLWKH[SHULPHQWDOUHVHDUFKRID[LDOO\ORDGHGPHPEHUVPDGHRIVWUXFWXUDOODPLQDWHGJODVV7KHSXUSRVHRIWKH UHVHDUFKLVWKHHYDOXDWLRQRIEXFNOLQJVWUHQJWKDQGDFWXDOEHKDYLRXURIWKHFROXPQVGXHWRWKHDEVHQFHRIVWDQGDUGVIRUGHVLJQRI JODVVORDGEHDULQJVWUXFWXUHV7KHH[SHULPHQWDOUHVHDUFKIROORZVWKHSUHYLRXVRQHIRFXVLQJRQPHDVXULQJRILQLWLDOJHRPHWULFDO LPSHUIHFWLRQVRIJODVVPHPEHUV:LWKLQWKHIUDPHRIWKHUHVHDUFKVSHFLPHQVZHUHWHVWHG$OORIWKHPZHUHRIWKHVDPHJHRPHWU\ OHQJWKPPZLGWKPPDQGWKLFNQHVVPPEXWKDGGLIIHUHQWFRPSRVLWLRQ±PRQROLWKLFJODVVRUODPLQDWHGGRXEOHRU WULSOHJODVVPDGHRIDQQHDOHGRUIXOO\WHPSHUHGJODVVSDQHVERQGHGWRJHWKHUE\39%RU(9$6$)(IRLO'XHWRUHFWDQJXODUFURVV VHFWLRQDQGFRQVLGHUHGERXQGDU\FRQGLWLRQVIOH[XUDOEXFNOLQJSHUSHQGLFXODUWRWKHZHDND[LVRIWKHFURVVVHFWLRQRFFXUUHG'XULQJ WKHWHVWLQJODWHUDOGHIOHFWLRQDQGQRUPDOVWUHVVHVDWPLGVSDQZHUHPHDVXUHG0D[LPXPIRUFHDFKLHYHGGXULQJWKHWHVWLQJKDVEHHQ DGRSWHGDVEXFNOLQJVWUHQJWK(XOHU¶VFULWLFDOORDGVDQGHTXLYDOHQWJHRPHWULFDOLPSHUIHFWLRQVZHUHHYDOXDWHGXVLQJD6RXWKZHOO¶V PHWKRG7KHUHVXOWVRIH[SHULPHQWVZHUHVWDWLVWLFDOO\HYDOXDWHGDFFRUGLQJWRWKH(XURSHDQVWDQGDUGIRUGHVLJQRIVWUXFWXUHV(1 DSSHQGL['7KHUHDUHVLJQLILFDQWGLIIHUHQFHVEHWZHHQWKHVSHFLPHQVPDGHRIDQQHDOHGJODVVRUIXOO\WHPSHUHGJODVVDQG EHWZHHQWKHVSHFLPHQVODPLQDWHGZLWKXVLQJ39%RU(9$6$)(IRLO±WKHGLIIHUHQFHVDUHLQWKHYDOXHVRIEXFNOLQJVWUHQJWKVDQG ORDG±GHIOHFWLRQORDGVWUHVVSORWV7KHQH[WVWHSZDVWRGHWHUPLQHWKHGHVLJQVWUHQJWKE\FDOFXODWLRQSURFHGXUHEDVHGRQEXFNOLQJ FXUYHVDSSURDFKLQWHQGHGIRUGHVLJQRIVWHHOFROXPQV 7KH$XWKRUV3XEOLVKHGE\(OVHYLHU/WG 3HHUUHYLHZXQGHUUHVSRQVLELOLW\RIWKHRUJDQL]LQJFRPPLWWHHRI:0&$86 Keywords:VWUXFWXUDOJODVVODPLQDWHGJODVVIOH[XUDOEXFNOLQJ6RXWKZHOO¶VPHWKRGEXFNOLQJVWUHQJWK &RUUHVSRQGLQJDXWKRU7HOID[ E-mail address:SHVHNR#IFHYXWEUF] © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of the organizing committee of WMCAUS 2016
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