Circular tube type city underpass

The utility model discloses a stable and the manifold circular tube type city underpass of function of overall structure. This circular tube type city underpass, including the passageway main part that is the cylinder, the axial of the middle part edge passageway main part of passageway main part is provided with vertical bearing dividing wall, still be provided with bearing soleplate in the passageway main part, bearing soleplate separates the passageway main part in proper order for the rainwater layer from lower to upper, synthesizes layer, people's bank of china layer, first lane layer, second lane layer and top layer, it is provided with the comprehensive layer partition wall in two sides to synthesize the in situ, it is separated for the reserve cabin of rainwater, heating power cabin, natural air cabin and bilge tank by vertical bearing dividing wall and comprehensive layer partition wall to synthesize the layer, be provided with explosion -proof cofferdam in the natural air cabin. Pass through the ver