Reliability-based Optimal Design of Cable-Stayed Bridges

摘要

The authors have been involved in the last few years in such a project, which led to the development of a programme dealing with the aspects of design which can be objectively expressed by a numerical merit measure, such as structural erection and maintenance cost. Additional goals may be established in order to ensure the desired geometric requirements during the optimization process (mesh discretization, ratios of variation of cable spacing on deck and pylons, etc). Probabilistic description is nowadays common and very simple up to very sophisticated PDF can be used to describe uncertain parameters. Reliability-based optimization should be considered an improvement for the design of structural systems.