The paper deals with the optimization of the structural morphology of plane framed structures subjected to a given set of loading conditions. The optimal structural morphology is found through a two-level approach by using optimality criteria and soft-computing techniques. In particular, the external structural morphology, i.e. the geometrical dimensions and the topology of the structural type, is optimized at the first level (macro-level) by means of genetic algorithms, while the internal morphology, like the geometry and the shape of the cross-sections, is selected at the second level (micro-level) through a fully stressed design. In the application, specific attention is paid to a framed bridge and the structural morphology which leads to the optimal cooperation between the straight deck and the curved supporting superstructure is searched for.
展开▼
