End-plate connections in Bi-axial bending - Measurements

Jari Mäkinen, Keijo Fränti, Matti Korhonen, Joshua Fillion, Markku Heinisuo

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


    In this paper we consider the measurements of bolted end-plate connections of tubular beams with cold-formed hollow rectangular aluminium sections. The motivation for these measurements originates from the fact that the aluminium standard (EN 1999-1-1) [1] does not cover the design of this very frequently used type of connection, where the bolts are located outside the edge-lines of the cross-section, i.e. corner bolts. Many tests and studies regarding this area have been conducted, but this paper brings value to the case where bi-axial bending is applied. The measurements have been carried out and the detailed results shall be shown. In this paper, we will focus on the six measurements where the tubular beams were bent uniaxially and biaxially to these limit points. The tests were stopped when the ultimate limit state was reached. In this case the connection never actually broke, but effectively the joint had lost its load bearing capacity. Some residual capacity still remained, but the displacements were too great resulting in a totally different behavior of the connection. The behavior of this connection is highly non-linear, since aluminium (AW 5754) as a material is strain hardening and the mechanism in the connection changes as the displacements increase.

    Original languageEnglish
    Title of host publication13th International Aluminium Conference, Sustainability, Durability and Structural Advantages,
    Subtitle of host publicationINALCO 2016; Naples; Italy; 21 September 2016 through 23 September 2016
    EditorsF. M. Mazzolani, A. Squillace, B. Faggiano, F. Bellucci
    PublisherTrans Tech Publications Ltd
    Number of pages6
    ISBN (Print)9783038356219
    Publication statusPublished - 2016
    Publication typeA4 Article in conference proceedings
    EventInternational Aluminium Conference -
    Duration: 7 Dec 2016 → …

    Publication series

    NameKey Engineering Materials
    ISSN (Print)1013-9826


    ConferenceInternational Aluminium Conference
    Period7/12/16 → …


    • Bi-axial bending measurements
    • End-plate connection

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering


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