Optimal design of cold-formed steel portal frames for stressed-skin action using genetic algorithm

Duoc T. Phan, James B.P. Lim, Tiku T. Tanyimboh, A.M. Wrzesien, Wei Sha, R.M. Lawson

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper describes a stressed-skin diaphragm approach to the optimal design of the internal frame of a cold-formed steel portal framing system, in conjunction with the effect of semi-rigid joints. Both ultimate and serviceability limit states are considered. Wind load combinations are included. The designs are optimized using a real-coded niching genetic algorithm, in which both discrete and continuous decision variables are processed. For a building with two internal frames, it is shown that the material cost of the internal frame can be reduced by as much as 53%, compared with a design that ignores stressed-skin action.
LanguageEnglish
Pages36-49
Number of pages14
JournalEngineering Structures
Volume93
Early online date24 Mar 2015
DOIs
Publication statusPublished - 15 Jun 2015

Fingerprint

Skin
Genetic algorithms
Steel
Diaphragms
Costs
Optimal design

Keywords

  • cold formed steel
  • portal frames
  • building topology
  • stressed skin action
  • real coded genetic algorithm
  • constrained evolutionary optimization

Cite this

Phan, Duoc T. ; Lim, James B.P. ; Tanyimboh, Tiku T. ; Wrzesien, A.M. ; Sha, Wei ; Lawson, R.M. / Optimal design of cold-formed steel portal frames for stressed-skin action using genetic algorithm. In: Engineering Structures. 2015 ; Vol. 93. pp. 36-49.
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Optimal design of cold-formed steel portal frames for stressed-skin action using genetic algorithm. / Phan, Duoc T.; Lim, James B.P.; Tanyimboh, Tiku T.; Wrzesien, A.M.; Sha, Wei; Lawson, R.M.

In: Engineering Structures, Vol. 93, 15.06.2015, p. 36-49.

Research output: Contribution to journalArticle

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AU - Sha, Wei

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