Continuous beam tests on aluminium alloy SHS and RHS with internal stiffeners

M. Su, Ben Young, L. Gardner

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

    Abstract

    The aims of this study are to generate experimental data on aluminium alloy continuous beams of square and rectangular hollow section (SHS and RHS) with internal stiffeners, as well as to assess the current design approaches for indeterminate structures using this new cross-section shape. The experimental programme comprised material tests and five-point bending tests (i.e. continuous beams over three supports) with three different loading configurations. Generally, the specimens failed by the formation of a collapse mechanism comprising three plastic hinges. Comparisons of the test results with design strengths were also carried out. The design strengths predicted by the American (2010), Australian/New Zealand(1997) and European (2007) specifications are found to be rather conservative. The plastic hinge method in Annex H of Eurocode 9 (2007) provides improved results, while the Continuous Strength Method (CSM) for indeterminate structures gives the most accurate and consistent predictions. The results reveal that both strain hardening at the cross-sectional level and moment redistribution at the global system level have significant influence on the structural performance of stocky aluminium alloy structures.

    Original languageEnglish
    Title of host publicationResearch and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013
    Pages1113-1117
    Number of pages5
    Publication statusPublished - 2013
    Event5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013 - Cape Town, South Africa
    Duration: 2 Sep 20134 Sep 2013

    Conference

    Conference5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013
    Country/TerritorySouth Africa
    CityCape Town
    Period2/09/134/09/13

    Keywords

    • collapse mechanism
    • cross-section shapes
    • design approaches
    • loading configuration
    • moment redistribution
    • plastic hinge method
    • square and rectangular hollow sections
    • structural performance
    • mechanics
    • strain hardening
    • structural design
    • solar buildings

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