Innovative Look at the 'General Method' of Assessing Buckling Resistance of Steel Structures

• Autorzy: Czepiżak Dariusz

Identyfikatory

DOI

10.2478/sgem-2021-0022

• Języki publikacji: EN

Abstrakty

EN

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 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 α_cr, 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 α_cr, 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.

Słowa kluczowe

EN

steel structure; stability; buckling; general method

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2021
• Tom: Vol. 43, nr 4
• Strony: 337--345
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Czepiżak Dariusz

• Wrocław University of Science and Technology, Faculty of Civil Engineering, ul. Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

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• [4] EN 1993-1-1:2005 Eurocode 3: Design of steel structures Part 1-1: General rules and rules for buildings.
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• [7] Sedlacek, G., & Naumes J. (2009). Excerpt from the Background Document to EN 1993-1-1, Flexural buckling and lateral buckling on a common basis: Stability assessments according to Eurocode 3, CEN/TC250/SC3/N1639E - rev2, Stahlbau Leichtmetallbau, Achen.
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• [12] Szalai, J., & Papp F. (2019). New stability design methodology through overall linear buckling analysis, ce/papers 3, Nos. 3 & 4, The 14th Nordic Steel Construction Conference, September 18–20, 2019, Copenhagen, Denmark, https://doi.org/10.1002/cepa.1145.