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Design of steel structures through advanced analysis

Design methods effectively utilising contemporary computational tools enable structural engineers to consider the behaviour of steel structures in a much more direct and accurate way in comparison to traditional structural steel design based on hand calculations. Two new design methods using contemporary computational tools available to the structural engineering profession have been developed.

Stiffness reduction approach for structural steel design

A novel structural steel design approach based on stiffness reduction has been developed. The developed design approach is performed by carrying out the elastic Geometrically Nonlinear Analysis (GNA) and Linear Buckling Analysis (LBA) of steel structures with reducing stiffnesses of structural members. Since (i) the GNA and LBA consider the detrimental influence of the second-order effects and (ii) stiffness reduction fully takes into account the deleterious influence of the plasticity, geometric imperfections and residual stresses, the developed stiffness reduction approach enables the direct assessment of the structural resistance without the need of member design equations, enabling explicit visualisations of structural failure modes. The proposed approach has been extensively verified. More information on this novel structural steel design approach can be found in the following publications.