The development of fire safety research in road tunnels during the past 20 years is reviewed, with particularreference to the activity of the Flame Research Group at Politecnico di Torino (Italy). Simulations of fire accidents in tunnelsare described for both full-scale tests in real tunnels and for laboratory-scale tests. It is shown how simple semiempiricalthermo-fluid dynamic models are able to capture the fire dynamics and the behaviour of the smoke layer observedin experiments. The results provide a basis to develop rational design criteria and safety regulations.
展开▼
