Advanced Steel Construction

Vol. 12, No. 3, pp. 328-358 (2016)


SAFETY ASSESSMENT OF EUROCODE 3 STABILITY

DESIGNRULES FOR THE FLEXURAL BUCKLING OF

COLUMNS

 

Luís Simões da Silva, Trayana Tankova*, Liliana Marques and Carlos Rebelo

ISISE, Department of Civil Engineering, University of Coimbra, Coimbra, Portugal

Polo II, Pinhal de Marrocos

3030-290 Coimbra, PORTUGAL

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 25 September 2015; Accepted: 21 October 2015

 

DOI:10.18057/IJASC.2016.12.3.7

 

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ABSTRACT

This paper presents the safety assessment of Eurocode 3 – part 1-1 [1] rules for the flexural bucklingcolumns using hot-rolled cross-sections (I and H cross-sections).The safety assessment follows the procedure presented in Annex D of EN 1990 [2]. It is based on a large number(7332) of numerical simulations (GMNIA) covering various relevant parameters.

Firstly, it is concluded that the level of safety is consistent across the various types of I and H cross-sections and steelgrades (maximum variation of 6.3%) except for S460 and minor axis buckling. It is therefore proposed to adjust thebuckling curves for minor axis buckling for S460.

Secondly, the magnitude of the partial factor γM1 is assessed. It is shown that depending on the random variablesincluded in the analysis (just yield stress fy; yield stress fy and cross-section geometry; or yield stress fy, cross-sectiongeometry and modulus of elasticity E) the average value of γM1 varies from 0.941 to 1.049 with c.o.v varying from4.3% to 6.3%.

 

KEYWORDS

Column, flexural buckling, safety assessment, design rules, steel, Eurocode 3, stability


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