Abstract

A study of the variation in axial loads on columns of braced bays along earthquake is presented. Studied columns belong to regular building of 10-, 14- and 18- stories structured with moment-resisting ductile braced steel frames in a chevron configuration. Subject buildings were [...]

Abstract

The present paper deals with the economic optimization of a series of 15 bridge piers with rectangular hollow sections. It combines height columns of 20, 30, 40, 50 and 60 m and viaducts of 40, 50 and 60 m of main intermediate spans. The optimization uses a variant of the ant colony [...]

Abstract

This paper presents two gradient algorithms applied to the economic optimization of reinforced concrete vaults, typically used in the construction of underpasses. The algorithms are gradient multi start neighbourhood exhaustive search procedures. The vault is defined by 45 design [...]

Abstract

This paper deals with the minimum cost automatic design of precast bridge decks made of U-beams and an upper slab. It uses a hybrid memetic algorithm that combines the population search of solutions by genetic algorithms and a search by variable neighborhood. This algorithm is applied [...]