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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 70
Edited by: M. Iványi, J.P. Muzeau and B.H.V. Topping
Paper V.3

Realistic Minimum Weight Design of Steel Frameworks

W. Gutkowski+, J. Zawidzka+, J. Zawidzki+, D. Laplume#, G. Guerlement#* and S. Boulanger*

+Institute of Fundamental Technological Research, Warsaw, Poland
#Institut Mécanique et Architecture, Faculté Polytechnique de Mons, Mons, Belgium
*Bureau d'Études Adem SPRL, Mons, Belgium

Full Bibliographic Reference for this paper
W. Gutkowski, J. Zawidzka, J. Zawidzki, D. Laplume, G. Guerlement, S. Boulanger, "Realistic Minimum Weight Design of Steel Frameworks", in M. Iványi, J.P. Muzeau, B.H.V. Topping, (Editors), "Computational Steel Structures Technology", Civil-Comp Press, Edinburgh, UK, pp 147-153, 2000. doi:10.4203/ccp.70.5.3
In this paper, a practical method for determination of minimum-weight steel structures is proposed. The design is submitted to constraints such as maximum allowable stresses according to a predefined standard for ultimate limit states (ULS), and imposed maximum values of displacements at given points of the structure for serviceability limit states (SLS). Optimal design is obtained by choosing member sections in a catalogue. The method combines the use of a CAD industrial program with an iterative process consisting in downsizing the least stressed member at each optimisation step. Numerical examples are presented to assess the reliability of the algorithm. The proposed method appears to give satisfactory results, approaching the optimum structure in a reasonable amount of computation time.

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