Author(s): H. K. Issa
A parametric study, based on design optimization using distributed genetic
algorithm, is conducted to develop a reliable design procedure for steel portal
The efforts are made to modify distributed genetic algorithm in order to
enhance the quality of performance and accelerate the convergence to possible
The modification includes defining a state-of-art mutation
scheme and a reproduction procedure.
Software called DO-DGA has been
developed to handle the design optimization.
The study can help structural designers to work out the member forces
required to design the elements of steel portal frames without referring to the
complicated structural analysis.
Implementing the results of structural
optimization by DO-DGA, graphs and tables are developed from which the
designers can determine the member forces.
The main variables in the parametric
study of steel portal frame are the slope of pitched rafter, the applied load to the
rafter, the length and height of the haunch and the span of the frame.
procedure is promising since it can bring the design optimization into a daily-use
tool in design offices.
distributed genetic algorithm, steel portal frame, structural
It has been witnessed that considerable developments have occurred in the
Kurdistan region of Iraq during the past few years.
Along with the developments
many single storey buildings in the form of factories, workshops and showrooms
have been constructed.
Because of its economy and versatility for large spans in
construction of pitched-roofs such as shopping centres, warehouses, retail shops,
Size: 554 kb
Paper DOI: 10.2495/OP120051
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