A Cable-Stayed Anchor Type Suspension Tunnel Structure with Relay Extension of Artificial Island

Abstract

The invention discloses a cable-stayed anchorage type suspension tunnel structure with artificial island relay extension, comprising a pair of shore structures, a water suspension tunnel, several relay artificial islands and a cable anchorage system. A pair of docking bank structures are respectively connected between two ends of the floating tunnel in the water and a pair of slope tunnels in the land area. The underwater floating tunnel is formed by connecting multiple sections of pipe joints; the relay artificial islands are arranged at intervals along the axial direction of the underwater floating tunnel, so that the entire underwater floating tunnel is divided into several spanning floating tunnels. The stay cable anchorage system includes several pairs of stay cable anchorage artificial islands and multiple groups of stay cables. The cable anchorage artificial islands are all set at the mid-span positions on both sides of each span of the floating tunnel; A group of island wall cable pipes and cable protection sleeves, a group of cable steering piers, cable ramps and cable anchorage piers are arranged on the islands; the floating tunnel structure of the present invention greatly increases the length of the floating tunnel in the water. improve.

Description

technical field [0001] The invention relates to an underwater floating tunnel, in particular to a cable-stayed anchorage type floating tunnel structure with relay extension of an artificial island. 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 vehi...

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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