Innovative Look at the ‘General Method’ of Assessing Buckling Resistance of Steel Structures
Affiliation:
1. Wrocław University of Science and Technology , Faculty of Civil Engineering , ul. Wybrzeże Wyspiańskiego 27 , Wrocław , Poland
Abstract
Abstract
Stability checking is an essential element of the dimensioning of steel frame structures. One of the stability checking methods allowed by EN 1993-1-1 is the so-called general method of assessing structural stability, based on buckling curves and relative structure slenderness
λ
¯
op
{\bar \lambda _{op}}
usually determined through numerical analyses. But this method is not widely used because of the limited computing capabilities of the engineering programs dedicated to static load analyses and difficulties in interpreting the results of the computations. The commonly used computer programs enable one to determine the shape of buckling and critical load amplifier αcr
, from which one cannot directly determine the risk of buckling of a real structure. This paper presents a modified and innovative approach to the general method of assessing structural stability, which uses only three parameters, that is, the type of cross section, cross-section strength utilisation and αcr
, to determine a member’s/structure’s bearing capacity mobilisation from the stability condition. The problem solution is presented in the form of simple formulas and legible diagrams. Finally, synthetic conclusions are formulated.
Publisher
Walter de Gruyter GmbH
Subject
Computers in Earth Sciences,Mechanics of Materials,Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering
Reference12 articles.
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