Smoke control is a crucial issue in tunnel fire prevention and control, especially in the ultra-wide tunnels, which is arousing more and more attentions. In this paper, the performance of three different exhaust port setting methods on the fire smoke control in the four-lane tunnel of immersed tube is compared and analyzed based on CFD numerical simulation. In the super wide immersed tunnel, increasing the number of smoke outlets on the transverse side of the tunnel can effectively reduce the thickness of the smoke layer and the maximum temperature of the vault under the top centralized smoke exhaust strategy. The efficiency of smoke exhaust of the outlet along the tunnel obviously decreased with its distance far away from the fire. In the design of smoke prevention and exhaust for super wide section immersed tube tunnel, we can consider reducing the gap between the exhaust fume and increasing the number of horizontal exhaust fume to improve the effect of smoke control in tunnel.
Effects of the Layout of Exhaust Port on the Performance of Smoke Control for Ultra-Wide Immersed Tube Tunnel
Lect. Notes Electrical Eng.
2021-12-14
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
British Library Conference Proceedings | 2022
|Concrete tunnel immersed tube joint transportation method
Europäisches Patentamt | 2023
|ISTANBUL (BOSPORUS) IMMERSED TUBE TUNNEL AND SURVEY WORKS
British Library Conference Proceedings | 2011
|