Optimum design of nonlinear steel frames with semi-rigid connections using a genetic algorithm

摘要: Abstract The realistic modeling of beam-to-column connections plays an important role in the analysis and design steel frames. A genetic algorithm based optimum method is presented for nonlinear multistorey frames with semi-rigid connections. obtains a frame least weight by selecting appropriate sections from standard set such as wide flange AISC or universal British standard. accounts serviceability strength constraints specified BS5950. empirical model used to include moment–rotation relation Furthermore, P – Δ effect also accounted frame. effective length factors columns which are flexibly connected beams obtained solution interaction equation. number end plate without column stiffeners designed demonstrate efficiency algorithm.