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ISSN: 1820-0206 First published in 1950
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doi:10.5937/str2201003P Vol. 72, No.1(2022), Pages: 3-11
Analysis and
Optimization of the Main Girder of the Bridge Crane with an
Asymmetric Box Cross-Section
Goran Pavlović
The presented research
deals with the optimal design of the main girder with an asymmetric
box cross-section of the double-beam bridge crane. The Moth-Flame
Optimization algorithm (MFO) is used for solving this multicriteria
optimization problem. This algorithm is a relatively new
population-based metaheuristic method. The paper takes the following
criteria as the constraint functions: strength, local stability of
the girder plates (webs and top flange), local stability of the
longitudinal stiffeners, global stability of the main girder,
deflections, and period of oscillation. The justification of the
proposed procedure is shown in one example of a real solution of the
double-beam bridge crane. Significant savings in material were
achieved in this research, within the range of 19.42 to 25.49%. The
use of this algorithm enables the application of a very large number
of variables and constraint functions, whereby the optimal values
are obtained in a relatively short period.
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