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    Cyclic response of hollow and concrete-filled circular hollow section braces

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    Publication date
    2014
    Author
    Sheehan, Therese
    Chan, T.M.
    Keyword
    Buildings; Structures; Design; Composite structures; Seismic engineering; Steel bracing members; Tubular braces; Performance
    Rights
    © 2014 ICE. Reproduced in accordance with the publisher's self-archiving policy.
    Peer-Reviewed
    yes
    
    Metadata
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    Abstract
    The behaviour of seismic-resistant buildings relies heavily upon the inclusion of energy dissipating devices. For concentrically-braced frames, this function is accomplished by diagonal bracing members whose performance depends upon both cross-sectional properties and global slenderness. Traditionally preferred rectangular hollow sections are susceptible to local buckling, particularly in cold-formed tubes, owing to the residual stresses from manufacture. This paper explores the response of hollow and concrete-filled circular tubes under cyclic axial loading. The uniformity of the circular cross-section provides superior structural efficiency over rectangular sections and can be further optimised by the inclusion of concrete infill. A series of experiments was conducted on filled and hollow specimens to assess the merit of the composite section. Comparisons were drawn between hot-finished and cold-formed sections to establish the influence of fabrication on member performance. Two specimen lengths were utilised to assess the influence of non-dimensional slenderness. Parameters such as ductility, energy dissipation, tensile strength and compressive resistance are presented and compared with design codes and empirically derived predictions.
    URI
    http://hdl.handle.net/10454/10789
    Version
    Published version
    Citation
    Sheehan, T. and Chan, T. M. (2014) Cyclic response of hollow and concrete-filled circular hollow section braces. Proceedings of the Institution of Civil Engineers: Structures and Buildings. 167 (3): 140-152.
    Link to publisher’s version
    https://doi.org/10.1680/stbu.12.00033
    Type
    Journal Article
    Collections
    Engineering and Informatics Publications

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