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Title: Research, theory and practice of second order direct analysis for design of steel and composite structures
Authors: Chan, SL
Liu, YP
Liu, SW
Issue Date: 2016
Publisher: European Convention for Constructional Steelwork
Source: Proceedings of the International Colloquium on Stability and Ductility of Steel Structures, SDSS 2016, 2016, p. 3-13 How to cite?
Abstract: The terms "Second-order Analysis" and "Direct Analysis" appear in many modern design codes but this use is still relatively new to engineers. In the past, second order analysis was mainly to account for sway effects and defined only as the second-order "indirect" analy-sis, P-Δ-only analysis or simplified second order analysis which needs to be used with the ef-fective length assumption. The modern second-order direct analysis or P-Δ-δ analysis allow-ing for both sway and member buckling effects with imperfections provides a reliable and proficient tool for practical design. Their underlying principle also carries a very different phi-losophy to the conventional design approach. This paper outlines the differences between the two design concepts. Several built structures designed completely without effective length assumption are also discussed. The era for re-Thinking our design and analysis philosophy seems to have arrived.
Description: International Colloquium on Stability and Ductility of Steel Structures, SDSS 2016, Romania, 30 May - 1 June 2016
ISBN: 9789291471331
Appears in Collections:Conference Paper

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