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Reliability-based optimum design of cable-stayed bridges

Negrão, J. H. O.; Simões, L. M. C.

This paper presents a procedure for finding the reliability-based optimum design of cable-stayed bridges. The minimisation problem is stated as the minimisation of stresses, displacements, reliability and bridge cost. A finite-element approach is used for structural analysis. It includes a direct analytic sensitivity analysis module, which provides the structural behaviour responses to changes in the design var...


Fuzzy optimization of structures by the two-phase method

Simões, L. M. C.

http://www.sciencedirect.com/science/article/B6V28-44GDMJM-N/1/7cb596cef55d00a84ef52689c8bd5805


Fuzzy optimization of structures by the two-phase method

Simões, L. M. C.

http://www.sciencedirect.com/science/article/B6V28-44GDMJM-N/1/7cb596cef55d00a84ef52689c8bd5805


Optimization of cable-stayed bridges with box-girder decks

Simões, L. M. C.; Negrão, J. H. J. O.

Box-girder decks are very effective solutions for long span cable-stayed bridges, due to their high torsional stiffness and streamlined profile, which usually lead to a good aerodynamic behaviour. A study on the optimization of such structural system is presented in this paper. The deck is modelled through the assembly of planes of plate-membrane elements. A multicriteria approach is considered for the optimiza...


Optimization of cable-stayed bridges with box-girder decks

Simões, L. M. C.; Negrão, J. H. J. O.

Box-girder decks are very effective solutions for long span cable-stayed bridges, due to their high torsional stiffness and streamlined profile, which usually lead to a good aerodynamic behaviour. A study on the optimization of such structural system is presented in this paper. The deck is modelled through the assembly of planes of plate-membrane elements. A multicriteria approach is considered for the optimiza...



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