Underwater inclined pulling type suspension tunnel structure

Abstract

The invention discloses an underwater inclined pulling type suspension tunnel structure. An underwater suspension tunnel, a pair of bank docking structures, an inhaul cable anchoring system, a buoyantweight ratio adjusting system, an anti-collision warning system and an escape system are included. A pair of bank docking structures are located on bank slopes on the two sides correspondingly and connected between the two ends of the underwater suspension tunnel and a pair of land area slope tunnels. The underwater suspension tunnel is formed by connecting a plurality of sections of pipe joints.A both-way single cable face or both-way double cable faces are adopted in the inhaul cable anchoring system, and four inhaul cable receiving wells, four inhaul cable steering piers, an inhaul cablerampway and a plurality of stay cables are included. The buoyant weight ratio adjusting system comprises a tunnel pipe joint inner buoyant weight ratio adjusting device and a bank docking structure inner buoyant weight ratio adjusting device. The anti-collision warning system comprises a warning float device and an underwater warning anchor cable device. The escape system comprises an automatic alarming system, an escape time delay system and an escape path. The underwater inclined pulling type suspension tunnel structure is more reasonable in stress, and influences from construction period unfavorable sea conditions are lowered.

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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