Capacidad resistente de pilas metálicas tubulares circulares rellenas de hormigón (CFT) en puentes integrales

R. Chacón; E. Mirambell; E. Real

doi:10.3989/ic.11.098

Autores/as

R. Chacón Universitat Politècnica de Catalunya
E. Mirambell Universitat Politècnica de Catalunya
E. Real Universitat Politècnica de Catalunya

DOI:

https://doi.org/10.3989/ic.11.098

Palabras clave:

Puentes integrales, tubos rellenos de hormigón, estructuras mixtas

Resumen

Se presenta el análisis estructural de pilas metálicas tubulares rellenas de hormigón (CFT) sometidas a flexo-compresión. El objetivo principal es valorar los mecanismos resistentes de las pilas cuando se someten a un desplazamiento en cabeza. Estos desplazamientos, conjuntamente con el esfuerzo axil de compresión, que en este trabajo se aproxima con un porcentaje de la resistencia plástica a compresión de los CFT, representan las acciones a las cuales se ven sometidos los elementos de este estudio. Se utiliza una herramienta numérica sobre una base hipotética de prototipos de pilas. Los resultados numéricos obtenidos así como los resultados experimentales encontrados en la literatura han permitido extraer conclusiones relativas a la capacidad seccional de los CFT. Se proponen expresiones de diseño relativas a la capacidad resistente de los CFT considerando el efecto del confinamiento y se comparan con los resultados que se derivan de la formulación de EN1994.

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Citas

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