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Resistencia al fuego de armaduras de acero inoxidable

Fire resistance of stainless steel reinforcing bars
Authors: Franssen, Jean-Marc; Gernay, Thomas;

Resistencia al fuego de armaduras de acero inoxidable

Abstract

Un incendio constituye un riesgo por dos razones, la toxicidad del aire y las altas temperaturas. Dependiendo de si se produce al aire libre o en un recinto cerrado la magnitud del peligro varía notablemente. En el exterior, es poco probable superar los 700ºC, sin embargo, en el interior la temperatura puede llegar a ser mucho más elevada. Infraestructuras críticas son los túneles, además de por ser recintos cerrados, por la naturaleza de los materiales inflamables que albergan. El diseño y la resistencia de los materiales son aspectos claves para garantizar un tiempo suficiente hasta el colapso. Los efectos en las estructuras de hormigón armado empiezan en el propio comportamiento de los materiales. El hormigón pierde menos capacidad a altas temperaturas que el acero, por lo tanto, utilizar aceros con mejores propiedades a altas temperaturas como los inoxidables aumentan las prestaciones del conjunto de la estructura. En este capítulo se describen las características térmicas del acero inoxidable y cómo varían sus características mecánicas en función de la temperatura. Por medio de simulaciones informáticas (software SAFIR de la Universidad de Lieja) se ha realizado un análisis térmico de armaduras de acero inoxidable de diferentes tipos y al carbono, embebidas en hormigón con distintos recubrimientos, en sección de columna y de viga. Finalmente, se ha realizado un análisis estructural de dichos elementos sometidos a diferentes cargas en puntos temporales distintos en condiciones de fuego.

Country
Belgium
Related Organizations
Keywords

Numerical Analysis, Ingénierie civile, Civil engineering, Fire, Stainless Steel, Reinforced Concrete, Engineering, computing & technology, Ingénierie, informatique & technologie

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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