Buckling resistance of steel H-section beam–columns: In-plane buckling resistance

Marian Giżejowski , Zbigniew Stachura , Radosław Szczerba , Marcin Daniel Gajewski


Buckling resistance predictions resulting from flexural and flexural–torsional buckling of double tee section members subjected to compression and bending are considered. A novel analytical model is developed for establishing design criteria based on decomposition of the member buckling behaviour into in-plane and out-of-plane resistance. The former is based on second-order bending relationships of load effects of structural members with in-plane equivalent imperfections, while the latter is based on the stability theory of thin-walled open sections. First part of this study presents an analytical formulation of the in-plane buckling resistance of beam–columns. In this regard, further decomposition is postulated for the in-plane first-order bending moment diagram that results in the loading state to be the superposition of two components. The first component is related to symmetrical loading and the second to antisymmetric loading. To consider the second-order effects, prebuckling displacements generated by the abovementioned loading components are amplified with regard to the inversion of the residuum of the buckling force utilisation ratio in order to obtain approximate values of second-order displacements and internal moments. As a result, the in-plane interaction curve, expressed in dimensionless coordinates, that describes the beam–column in-plane flexural buckling resistance without considering lateral–torsional buckling effects, is obtained. The results of nonlinear finite element simulations are used for the verification of the developed analytical formulation. It is concluded that this proposal yields less conservative predictions than those based on the interaction relationships of clause 6.3.3 of Eurocode 3, Part 1–1.

Author Marian Giżejowski (FCE / ICE)
Marian Giżejowski,,
- The Institute of Civil Engineering
, Zbigniew Stachura (FCE / ICE)
Zbigniew Stachura,,
- The Institute of Civil Engineering
, Radosław Szczerba (FCE / ICE)
Radosław Szczerba,,
- The Institute of Civil Engineering
, Marcin Daniel Gajewski (FCE / ICE)
Marcin Daniel Gajewski,,
- The Institute of Civil Engineering
Journal seriesJournal of Constructional Steel Research, ISSN 0143-974X
Issue year2019
Publication size in sheets0.55
ASJC Classification2506 Metals and Alloys; 2211 Mechanics of Materials; 2215 Building and Construction; 2205 Civil and Structural Engineering
URL https://doi.org/10.1016/j.jcsr.2019.03.002
Languageen angielski
1-s2.0-S0143974X19301786-main.pdf 2.98 MB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 02-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 1; WoS Citations = 1; GS Citations = 4.0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 2.08; WoS Impact Factor: 2018 = 2.65 (2) - 2018=3.062 (5)
Citation count*4 (2020-06-01)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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