Eurocode 3 and the in-plane stability of portal frames

Lim, J. B. P., King, C. M., Rathbone, A. J., Davies, J. M. and Edmondson, Vikki (2005) Eurocode 3 and the in-plane stability of portal frames. The Structural Engineer, 83 (21). pp. 43-49.

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Abstract

Simple design rules are proposed that will enable engineers to take into account in-plane stability when designing single-storey steel portal frames plastically to Eurocode 3, without the need to resort to second-order elastic-plastic analysis software. The proposed design rules, developed from the results of a parametric study of different types of frame, are based on the Merchant-Rankine reduction method and take into account a modest amount of benefit from strain-hardening. A simple hand method for estimating the elastic critical load, required for calculating the Merchant-Rankine reduction, is also presented. From the results of the parametric study, the proposed design rules place frames into one of two categories: • Category A: Regular, symmetric and mono-pitched frames • Category B: Frames that fall outside of Category A but excluding tied portals For each category of frame, a reduction factor based on the Merchant-Rankine reduction method is proposed.

Item Type:	Article
Uncontrolled Keywords:	eurocode3; design; stability; portal frames; steel; strength; loads
Subjects:	H200 Civil Engineering
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Becky Skoyles
Date Deposited:	16 Mar 2018 15:32
Last Modified:	11 Oct 2019 21:31
URI:	http://nrl.northumbria.ac.uk/id/eprint/33784

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