5. Assessment of explosion actions on structures
5.1 Preamble
The preceding paragraphs describe the various methods available for estimating free-field overpressures following an explosion. However, the values thus determined are not directly applicable to structural design.
This is because the flow of the pressure wave is strongly disturbed in the vicinity of obstacles, and the pressure loading actually applied to a structure is significantly different from that in the free field. It is therefore necessary to characterize the interaction of the wave with the obstacles in order to obtain calculation actions that can be used for dimensioning.
Only the numerical methods (CFD) described above can take direct account of obstacles and thus directly obtain explosion actions on structures,...
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Assessment of explosion actions on structures
Conclusion and outlook
Bibliography
Digital media
ARIA – Technological accident database. French Ministry of Ecology, Energy, Sustainable Development and Town and Country Planning (MEEDDAT) http://www.aria.developpement-durable.gouv/
Software tools
AUTOREAGAS, CFX, FLUENT. ANSYS INC. Southpointe 275 Technology Drive Canonsburg, PA 15317, USA http://www.ansys.com
FLACS – FLame Acceleration Simulator. GEXCON AS Fantoftvegen 38 N-5892 Bergen, Norway http://www.gexcon.com
OpenFOAM – The Open...
Standards and norms
AFNOR EUROCODE 1: Actions on structures – Part 1–7: General actions – Accidental actions, EN 1991-1-7 (July 2006).
Regulations
Arrêté du 29 septembre 2005 relatif à " l'évaluation et à la prise en compte de la probabilité d'occurrence, de la cinétique, de l'intensité des effets et de la gravité des conséquences des accidents potentiels dans les études de dangers des installations classées soumise à autorisation ". JO n° 234 du 7 octobre 2005 – NOR DEVP0540371A.
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