A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fire modelling in tunnels - critical parameters
The public discussion about safety in tunnels is leading to improved passive and active safety requirements. As a consequence increased performance data for the construction material, equipment and protection coverage have to be specified as a reasonable optimum of safety and economical feasible requirements. Calculations based on fire models are applied to the specific parameters of a particular tunnel in order to figure out such a tunnel specific optimum. Based on the results of the sensitivity analysis the philosophy of a tunnel standard is discussed. To introduce a fire scenario together with fire resistance levels instead of definition of a temperature curve is recommended. Sensitivity of temperature values calculated by modeling of a fire scenario in a tunnel geometry has been investigated. Critical parameters have been filtered out and are discussed in this paper. The presentation includes discussion of meteorological parameters, sensitivity to train length, to influence of tunnel geometry, remaining oxygen concentration and durability of the fire. As a consequence of model calculation on sensitivity analysis temperature distribution in concrete and the corresponding fire resistance is discussed. This paper is concentrated on safety requirements with respect to the stability and does not refer to personnel safety.
Fire modelling in tunnels - critical parameters
The public discussion about safety in tunnels is leading to improved passive and active safety requirements. As a consequence increased performance data for the construction material, equipment and protection coverage have to be specified as a reasonable optimum of safety and economical feasible requirements. Calculations based on fire models are applied to the specific parameters of a particular tunnel in order to figure out such a tunnel specific optimum. Based on the results of the sensitivity analysis the philosophy of a tunnel standard is discussed. To introduce a fire scenario together with fire resistance levels instead of definition of a temperature curve is recommended. Sensitivity of temperature values calculated by modeling of a fire scenario in a tunnel geometry has been investigated. Critical parameters have been filtered out and are discussed in this paper. The presentation includes discussion of meteorological parameters, sensitivity to train length, to influence of tunnel geometry, remaining oxygen concentration and durability of the fire. As a consequence of model calculation on sensitivity analysis temperature distribution in concrete and the corresponding fire resistance is discussed. This paper is concentrated on safety requirements with respect to the stability and does not refer to personnel safety.
Fire modelling in tunnels - critical parameters
Brandmodellierung in Tunneln - Kritische Parameter
Eisenbeiss, A.A. (author) / Peherstorfer, H. (author) / Trauner, T. (author)
2002
8 Seiten, 6 Bilder, 9 Quellen
Conference paper
English
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