Urban underwater overpass tunnel system

Abstract

The invention discloses an urban underwater overpass tunnel system, which comprises a mainline tunnel and ramp tunnels. The mainline tunnel downwards penetrates into a water system, two ends of the mainline tunnel are connected with ground connection roads, one end of each ramp tunnel is connected with the mainline tunnel while the other end of the ramp tunnel is connected with another surface road, and an underground flyover crossing relation is formed between the mainline tunnel and the ramp tunnels or among the ramp tunnels. The urban underwater overpass tunnel system is structurally characterized in that under the premise that new underwater corridors are not added and the position of the mainline tunnel is not changed, the ramp tunnels are added, one end of each ramp tunnel is connected with the mainline tunnel while the other end of the ramp tunnel is connected with the other surface road, so that an underground overpass is formed, the utilization rate of underwater corridors is increased to the greatest extent, and traffic functions of the tunnels are sufficiently realized.

Description

technical field [0001] The invention relates to a building structure, in particular to an urban underwater overpass tunnel system. Background technique [0002] The engineering practice of nearly 30 underwater highway tunnels in my country has shown that underwater tunnels have significant urban regional characteristics, and there are often fewer ground roads directly connected to both sides of the river, so they present: [0003] (1) There are few tunnel entrances. For other road traffic that is not directly connected to it, if it needs to cross the water system through it, it needs to make more detours on the surface, indicating that its crossing function cannot be fully utilized; [0004] (2) There are few tunnel exits. With the increase of traffic across the water system, new traffic congestion points should be added on the surface, indicating that the diversion function is also hindered. [0005] However, the resources of underwater corridors are limited, and the traff...

AI Technical Summary

Problems solved by technology

[0003] (1) There are few tunnel entrances. For other road traffic that is not directly connected to it, if it needs to cross the water system through it, it needs to make more detours on the surface, indicating that its crossing function cannot be fully utilized;

[0004] (2) There are few tunnel exits. With the increase of traffic volume across the water system, new traffic congestion points should be added on the surface, indicating that the diversion function is also hindered.

[0006] (1) Increase the amount of ground demolition;

[0007] (2) Interfering with the life and travel of surrounding residents;

[0008] (3) Destroying the urban surface environment;

[0009] (4) Affecting the cross-strait layout planning

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