Prefabricating, floating transporting and fitting-out technology for steel shell immersed tunnel pipe sections

Abstract

The invention relates to a prefabricating, floating transporting and fitting-out technology for steel shell immersed tunnel pipe sections and belongs to the technical field of marine traffic engineering construction in transportation. The technology includes the following steps that steel shells of the tunnel pipe sections are manufactured on land, and the manufactured steel shells are transported to a concrete pouring and fitting-out quay at the tunnel address in a floating manner; concrete pouring and fitting-out part installation are conducted on the steel shells on the concrete pouring and fitting-out quay, and the tunnel pipe sections are manufactured; and the manufactured tunnel pipe sections are transported to a sinking position to be sunk and installed. According to the technology, due to the fact that the tunnel pipe sections are fitted out and wait to be installed at the position of the construction tunnel address, selection of operation windows for sinking and installing is very convenient, meanwhile, the number of the operation windows is increased, and the construction efficiency and the safety guarantee rate of construction are improved.

Description

technical field [0001] The invention relates to a prefabricated floating transport outfitting process for steel shell immersed tube tunnel joints, and belongs to the technical field of water transport engineering construction in transportation. Background technique [0002] In recent years, the research and application of immersed tube tunnels for cross-sea passages have been carried out at home and abroad. Internationally, Japan, South Korea and European and American countries have carried out a lot of research work. Construction of the Pusan-Geoje immersed tube tunnel in South Korea started in 2005. The tunnel is 3240m long and 26.46m wide, and the sea conditions are good. The undersea tunnel of the Oresund Bridge built by Denmark and Sweden is 4,050 meters long, weighs 55,000 tons, and is located 10 meters below the seabed. The total length of the immersed tube section of Tamagawa Tunnel in Japan is 1549.5m, and the immersed tube weighs about 52,000 tons. my country's ...

AI Technical Summary

Problems solved by technology

There will be certain safety risks in hauling huge pipe joints in water

At the same time, it will increase the cost of hauling equipment and channel dredging

[0008] (2) Dredging waterways has a great impact on the environment. For areas with shallow water depths and complex excavation soils, different dredging construction techniques need to be used at different elevations on the same section, and the dredging construction has many cross-working areas and complex construction organization

[0009] (3) During the floating process of the immersed tube, it is affected by the harsh natural conditions such as waves and currents, which may cause the risk of returning to the deep channel

[0010] (4) Since the excavation of the floating channel will change the flow direction of the original water area, it will also have an impact on the environment

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