Optimum Criss Crossing Cables in Multi-span Cable-stayed Bridges using Genetic Algorithms
Por:
Arellano H., Tolentino D., Gómez R.
Publicada:
1 feb 2019
Ahead of Print:
1 ene 2018
Categoría:
Civil and structural engineering
Resumen:
A multi-objective optimization approach in order to find the optimal
cable overlap length in multi-span cable-stayed bridges with criss-cross
cables is presented. The multi-objective optimization is solved by
considering three objectives: 1) the cost of the cable system, 2) the
displacement at the top of the pylon and 3) the alternate live load on
the bridge. An unconventional criss-cross cable system configuration in
which cables criss-cross at the center of intermediate spans is used for
a bridge with five spans and four pylons. Taking into account both the
cable overlap length and the different occurrences of alternate live
load, the set of optimal solutions was obtained by the use of genetic
algorithms. Results indicate that the optimal cable overlap length
corresponds to three criss-crossing cables that corresponds to 0.28
times the length of the central span. Research on multi-span
cable-stayed bridges with criss-cross cables allows the analysis of
another solution for the problem of stabilizing the displacement of
intermediate pylons in this kind of bridge.
Filiaciones:
Arellano H.:
Univ Nacl Autonoma Mexico, Inst Engn, Mexico City 04510, DF, Mexico
Institute of Engineering, Universidad Nacional Autónoma de México, México City, 04510, Mexico
Tolentino D.:
Inst Politecn Nacl, ESIA Zacatenco, Secc Estudios Posgrad Invest, Mexico City 07320, DF, Mexico
Sección de Estudios de Posgrado e Investigación, ESIA Zacatenco, Instituto Politécnico Nacional, México City, 07320, Mexico
Gómez R.:
Univ Nacl Autonoma Mexico, Inst Engn, Mexico City 04510, DF, Mexico
Institute of Engineering, Universidad Nacional Autónoma de México, México City, 04510, Mexico
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