Axial-moment interaction and load path dependency for steel columns

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dc.contributor.authorCollow, A.
dc.contributor.authorChand, A.
dc.contributor.authorLu, Y. C.
dc.contributor.authorLee, C.-L.
dc.contributor.authorMacRae, G.
dc.date.accessioned2018-06-24T23:46:36Z
dc.date.available2018-06-24T23:46:36Z
dc.date.issued2017en
dc.date.updated2018-02-23T01:41:36Z
dc.description.abstractThis paper discusses the effect of out-of-straightness direction, major-minor moment interaction and path dependency for steel columns. This has been undertaken by using the Extended Direct Analysis (EDA) method which has been developed for analysing a simple low-rise 3D steel frame structure under 3D biaxial loadings in arbitrary load-paths from first principles. It takes into account non-ideal conditions, residual stresses, member out-of-straightness, statistical variation in capacities, plasticity, and second-order geometric effects. It was found steel columns are path dependant, with the plastic capacity reducing by up to 18% when the loading occurs in the major and minor axis at the same time. By completing bi-directional loading on a simple 3D frame it was found that the maximum critical load on the major and minor axes reduced by 10% when compared to the 2D EDA method which does not consider major-minor moment interaction. Therefore it is concluded that the tangent modulus is a function of axial load, moment and load path. Further research is required to account for torsional effects and shear before this method can be used for design.en
dc.identifier.urihttp://hdl.handle.net/10092/15584
dc.language.isoen
dc.subject.anzsrcFields of Research::40 - Engineering::4005 - Civil engineering::400510 - Structural engineeringen
dc.subject.anzsrcFields of Research::40 - Engineering::4005 - Civil engineering::400504 - Construction engineeringen
dc.titleAxial-moment interaction and load path dependency for steel columnsen
dc.typeConference Contributions - Publisheden
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