Member capacity of bolted steel angles in compression - Influence of realistic end supports

作者：Kettler Markus; Taras Andreas; Unterweger Harald

来源：Journal of Constructional Steel Research, 2017, 130: 22-35.

DOI：10.1016/j.jcsr.2016.11.021

• Bolted angles
• Design rules
• Steel
• Eurocode 3
• Stability

For compression members with primarily axial forces, steel angles with bolted connections are often used. Due to the eccentric connection on only one leg additional bending moments are acting on the member, leading to a complex load carrying behaviour with flexural and/or lateral torsional buckling phenomena. The paper mainly focuses on the presentation of the influence of realistic end support conditions at the gusset plates on the member capacity in compression.
In the first part of the paper, about 300 existing test results for steel angles in compression with bolted connections are prepared in such a way that they can be compared with different design rules. This was achieved through the common representation of all test results as a function of the normalized slenderness (lambda) over bar (v) about the weak axis.
In the second part, systematic numerical calculations are conducted for limit cases of the stiffness of the boundary condition of the load-introducing gusset plates (rigid/hinged). The results are also presented in dependency of the relative slenderness (lambda) over bar (v). The consolidation of all tests and numerical results shows (besides the well-known difference between one-bolt and two-bolt connections) a very high influence of the end support of the gusset plate.

• 出版日期2017-3