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oa Civil Engineer in South Africa - Local buckling of webs and flanges in plastic design to SABS 01 62:1984 : technical paper

 

Abstract

Local buckling of the flanges and webs of I-sections are two of the most significant factors causing strain-weakening behaviour of plastically-designed steel structures. In the new South African code for steel design, SABS 0162:1984, the provisions for web buckling in particular appear to be over-conservative. The background theory to these requirements is discussed and a new theoretical model proposed. The requirements of the code and the theoretical predictions are compared to the results of a series of tests in which the negative influence of coincident axial force is apparent.

Plaaslike buiging van flense en ribbe van I-seksies is die twee mees betekenisvolle oorsake vir die spanningverswakkingsgedrag van plastisiteitsontwerpte staalstrukture. In die nuwe Suid-Afrikaanse kode vir staalontwerp, SABS 0162: 1984, blyk die voorsiening vir ribbuiging in besonder oorkonserwatief te wees. Die agtergrond-teorie vir hierdie vereistes word bespreek en 'n nuwe teoretiese ontwerp word voorgestel. Die vereistes van die kode en die teoretiese voorspellings word vergelyk met die resultate van 'n reeks toetse waarin die negatiewe invloed van ooreenstemmende aksiale krag duidelik waarneembaar is.

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/content/civeng1/27/12/EJC24973
1985-12-01
2016-12-08
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