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A unified method for the design of steel beam‐columns
Author(s) -
Höglund Torsten
Publication year - 2014
Publication title -
steel construction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.443
H-Index - 8
eISSN - 1867-0539
pISSN - 1867-0520
DOI - 10.1002/stco.201410035
Subject(s) - eurocode , structural engineering , beam (structure) , transverse plane , softening , engineering , computer science , materials science , composite material
In Eurocode 3, Part 1‐1 [1] two methods are given for the design of beam‐columns. They have been criticized for their complexity. Furthermore, internal plastic redistribution of stresses of class 3 cross‐sections is not utilized in the code. These shortcomings were resolved in proposal for amended rules in [5], however, the procedures for beam‐columns are still complicated and difficult to understand. An approximate method for the design of beam‐columns was proposed 1968 in [6] which was addressed in the Commentary to the Swedish regulations for steel structures [10] and used in Sweden since then [11]. It was accepted also in Eurocode 9 for aluminium [4], where it is especially convenient to allow for softening of the material at local transverse welds, see [9]. The method is here proposed to be included also in Eurocode 3. In this paper the resistance of class 3 cross‐sections is discussed and the unified method for beam‐columns is presented. Four worked examples are presented, three of them on rather complicated structures, to show the capability to treat such structures as well.