Optimum design of pitched roof steel frames with haunched rafters by genetic algorithm

摘要: Abstract The pitched roof steel frames appear to be the simplest structural form used in single storey buildings. However, its design necessitates consideration of many different criteria that are required complex structures. In this paper, a genetic algorithm is develop an optimum method for with haunches rafters eaves. selects universal beam sections columns and from available tables. Furthermore, it determines depth haunch at eaves length reaching most cost-effective form. Formulation problem based on elastic method. serviceability strength constraints included as defined BS 5950. overall buckling torsional mode between effective restraints both flanges also checked. A frame designed by developed demonstrate practical application.