Accounting for moment-rotation behaviour of connections in portal frames

Simple item page
dc.contributor.authorAlbertyn, Heindrich L.en_ZA
dc.contributor.authorHaas, T. N.en_ZA
dc.contributor.authorDunaiski, Peter E.en_ZA
dc.date.accessioned2017-02-07T13:45:40Z
dc.date.available2017-02-07T13:45:40Z
dc.date.issued2014-04
dc.descriptionCITATION: Albertyn, H. L., Haas, T. N. & Dunaiski, P. E. 2014. Accounting for moment-rotation behaviour of connections in portal frames. Journal of the South African Institution of Civil Engineering, 56(1):69-76.
dc.descriptionThe original publication is available at http://www.scielo.org.za
dc.description.abstractPortal frames are steel structures used to construct industrial buildings. Conventional analysis techniques used by practising engineering professionals assume that the eave, ridge and base connections are either infinitely rigid or perfectly pinned. This approach leads to less accurate analysis of the displacement behaviour of portal frames when subjected to external loading. Portal frames must therefore be analysed with rotational springs at all connections to yield accurate displacement behaviour. This investigation focused on determining the accuracy and economic feasibility of modelling portal frame connections with rotational springs. The rotational spring stiffnesses of all connections were required before the portal frame could be analysed in a second-order two-dimensional non-linear analysis. The rotational spring stiffnesses unique to each connection were determined from the moment-rotation behaviour obtained from a series of finite element analysis simulations of each connection. Thereafter these stiffnesses were used to determine the vertical and horizontal displacements of the portal frame. These displacements were compared with experimental test results. The reasons for the discrepancies between the numerical and experimental results were investigated through a sensitivity analysis. The findings suggest that it is not computationally feasible to analyse portal frames with rotational springs, even though the model’s predicted results are more accurate than those of conventional analysis using rigid and pin connections.en_ZA
dc.description.urihttp://www.scielo.org.za/scielo.php?script=sci_abstract&pid=S1021-20192014000100008&lng=en&nrm=iso&tlng=en
dc.description.versionPublisher's version
dc.format.extent8 pagesen_ZA
dc.identifier.citationAlbertyn, H. L., Haas, T. N. & Dunaiski, P. E. 2014. Accounting for moment-rotation behaviour of connections in portal frames. Journal of the South African Institution of Civil Engineering, 56(1):69-76.
dc.identifier.issn2309-8775 (online)
dc.identifier.issn1021-2019 (print)
dc.identifier.urihttp://hdl.handle.net/10019.1/100603
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Institution of Civil Engineeringen_ZA
dc.rights.holderSouth African Institution of Civil Engineeringen_ZA
dc.subjectStructural frames -- Joints (Engineering) -- Analysisen_ZA
dc.subjectMoment-rotation behaviouren_ZA
dc.subjectFinite element analysisen_ZA
dc.subjectSteel framing (Building)en_ZA
dc.titleAccounting for moment-rotation behaviour of connections in portal framesen_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
albertyn_accounting_2014.pdf
Size:
910.01 KB
Format:
Adobe Portable Document Format
Description:
Download article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.95 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles (Civil Engineering)