Tunnel multi floor

Abstract

A multiple floor roadway tunnel has a circular wall and two horizontal slabs, one above the other and spaced apart to create three separate galleries within the tunnel. A service gallery is located between the bottom of the circular wall and the lower horizontal slab. A lower roadway gallery is located between the lower and the upper horizontal slabs. An upper roadway gallery is located between the upper horizontal slab and the top of the circular wall. Openings in the upper and lower slabs are located proximate the circular wall in spaced apart intervals and protected by fire devices of box type, which are connected by closed vertical access galleries for passage of people between galleries. The service gallery has at least one circulating shuttle vehicle, which may suspended from the lower horizontal slab, to allow for local access and the evacuation of people.

1 . A roadway tunnel defined by a circular wall, the tunnel comprising:
 a lower horizontal slab located above the bottom of the circular wall;   an upper horizontal slab located above the lower horizontal slab and below the top of the circular wall;   a service gallery located between the bottom of the circular wall and the lower horizontal slab;   a lower roadway gallery located between the lower horizontal slab and the upper horizontal slab,   an upper roadway gallery located between the upper horizontal slab and the top of the circular wall, and   openings in the upper and lower slabs located proximate the circular wall in spaced apart intervals, protected with fire devices of box type, which are provided with escape doors.   
     
     
         2 . The tunnel according to  claim 1  wherein the fireguard devices on the lower and the upper roadway galleries are connected by closed vertical access galleries to allow for safe passage of people between the lower and upper roadway galleries and the service gallery. 
     
     
         3 . The tunnel according to  claim 1  wherein the service gallery is provided with at least one circulating shuttle vehicle, which may suspended from the lower horizontal slab, able to allow for local access and the evacuation of people. 
     
     
         4 . The tunnel according to  claim 1  wherein the lower horizontal slab is located slightly above the bottom of the tunnel. 
     
     
         5 . The tunnel according to  claim 1  wherein the upper horizontal slab is located roughly at half the height of the tunnel.