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New PDF release: Advances in Steel Structures (ICASS '99). Proceedings of The

By SL Chan and JG Teng (Eds.)

ISBN-10: 0080430155

ISBN-13: 9780080430157

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Extra resources for Advances in Steel Structures (ICASS '99). Proceedings of The Second International Conference on Advances in Steel Structures 15–17 December 1999, Hong Kong, China

Sample text

4) show that the loads carried are not significantly greater than the local buckling load for the pin-ended shorter length test specimens. By comparison, the design predictions accounting for the shift in effective centroid are very conservative. Similar results are achieved for lipped channels but the differences are not so marked as shown in Young and Rasmussen (1998b). Fig. 3 Comparison of fixed-ended plain channel test strengths with design strengths Recent Developments & Cold-Formed Open Section and Tubular Members 29 Fig.

Appropriate reinforcement should be provided to ensure that through thickness cracks cannot develop in the slab. CONCLUSIONS Composite multi-storey building structures are highly redundant, and their floor systems exhibit high in-plane stiffness. When a compartment fire occurs beneath the floor, the behaviour of the floor system is dominated by restraint to thermal expansion, with middle surface heating and through thickness gradients causing quite different effects. The restraint to thermal expansion can easily lead to buckling and large post-buckling displacements, which are both stable and beneficial.

However, for the more slender C10010 section, the distortional buckling strength Md and section strength Ms predictions of AS/NZS 4600 are unconservative. By comparison, AS 4100 is more accurate although this may be coincidental since the design method in AS 4100 was not developed for local and distortional buckling of such slender sections and the prediction is based on a very simple model of local buckling. Further, there seems to be a significant interaction between the lateral buckling mode and lip buckling at longer lengths with both AS 4100 and AS/NZS 4600 providing unconservative predictions of the strength.

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Advances in Steel Structures (ICASS '99). Proceedings of The Second International Conference on Advances in Steel Structures 15–17 December 1999, Hong Kong, China by SL Chan and JG Teng (Eds.)


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