Evolutionary Design of Bridge Structures

In this paper evolutionary procedures are applied to the optimization of the structural morphology of bridge structures, by limiting the amount of material subjected to critical stress states. The design domain is subdivided in two or more parts. In each part a different material, having low strength in tension or low strength in compression, is considered. The results obtained for the optimization of the structural morphology of a three-span bridge structure allow to compare the effectiveness of different cable-stayed and arch bridge design solutions.