An underwater cable-stayed floating tunnel structure

Abstract

The invention discloses an underwater cable-stayed suspension tunnel structure, which comprises an underwater suspension tunnel, a pair of docking structures, a cable anchorage system, a floating weight ratio adjustment system, an anti-collision warning system and an escape system. A pair of docking bank structures are respectively located on the bank slopes on both sides; a pair of docking bank structures are respectively connected between the two ends of the floating tunnel in the water and a pair of land slope tunnels. The underwater floating tunnel is connected by multiple sections of pipe joints; the cable anchorage system adopts bidirectional single cable plane or bidirectional double cable plane and includes four cable receiving shafts, four sets of cable steering piers, cable ramps and multi-track ramps. Cable; the buoyant weight ratio adjustment system includes the buoyant weight ratio adjustment device in the tunnel pipe section and the buoyant weight ratio adjustment device in the shore structure; the anti-collision warning system includes a warning buoy device and an underwater warning anchor cable device; the escape system includes an automatic alarm system , Escape time extension system and escape path. The underwater cable-stayed floating tunnel structure of the present invention has more reasonable stress and reduces the influence of unfavorable sea conditions during construction.

Description

technical field [0001] The invention relates to an underwater suspension tunnel, in particular to an underwater cable-stayed suspension tunnel structure. Background technique [0002] The submerged floating tunnel, the English name is "Submerged Floating Tunnel", referred to as "SFT". In Italy, it is also called "Archimedes bridge", or "PDA" bridge for short. Generally, it consists of a tubular body floating at a certain depth in the water (the space of the tubular body is large enough to meet the requirements of road and railway traffic), a support system (anchor cables anchored on the seabed foundation, piers or floating boxes on the water) and It is composed of structures on both sides of the river. It is a new type of structure that means of transportation across the two banks separated by deep water. It is suitable for all means of transportation that need to pass through the water. It can pass trains, cars, small motor vehicles and pedestrians, and can also be made t...

AI Technical Summary

Problems solved by technology

The buoy-type floating tunnel is suspended on the buoy on the water surface through anchor cables or anchor chains. The gravity of the tunnel is greater than the buoyancy, and the vertical direction is greatly affected by the fluctuation of the tide level; On the anchorage foundation below the bed, the gravity of the tunnel is less than the buoyancy, and the tunnel will displace or shake under the action of hydrodynamic forces; the pier-column type is actually a tunnel bridge supported on underwater pier columns, and the construction is difficult and expensive

Since the tunnel floats in the water, the installation and construction of the tunnel is affected by wind, waves, currents and ship waves. The underwater positioning of the three types of tunnels and the underwater or underwater docking construction are very difficult, and the comfort and safety of the underwater operation period Risks are unpredictable

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