Submerged floating tunnel and construction method thereof

Abstract

The invention discloses a submerged floating tunnel and a construction method thereof. The submerged floating tunnel comprises a plurality of main chord pipes and a plurality of web pipes, wherein theplurality of main chord pipes are arranged in parallel; each main chord pipe comprises an inner steel pipe, an outer steel pipe and annular interlayer concrete, the inner steel pipes are located in the outer steel pipes, and the portions between the inner steel pipes and the outer steel pipes are filled with the annular interlayer concrete; a traffic lane for vehicles to pass through is arrangedin the pipe cavity of the inner steel pipe of each main chord pipe, and divides the pipe cavity of the inner steel pipe into an upper space and a lower space; and the plurality of web pipes are hollowsteel pipes, the plurality of web pipes are transversely arranged between every two adjacent main chord pipes correspondingly, and make the upper spaces of every two adjacent main chord pipes communicate, so that the plurality of main chord pipes and the plurality of web pipes form a truss type hollow interlayer concrete filled steel tube-hollow steel pipe mixed structure. The submerged floatingtunnel can meet the requirements of rapid construction and safe operation and is good in structural stability.

Description

technical field [0001] The invention relates to the technical field of sea-crossing tunnel engineering, in particular to a floating tunnel and a construction method thereof. Background technique [0002] In recent decades, with the rapid development of national economy and science and technology, the demand for accelerating the infrastructure construction in the transportation field has been increasing, and the construction demand for super-long-span sea-crossing structures has also been raised, such as the completed Jiaozhou Bay Sea-crossing Bridge, Hangzhou Bay The cross-sea bridge and the Hong Kong-Zhuhai-Macao Bridge have greatly facilitated local transportation and promoted the development of cultural and economic communication. However, in my country's Bohai Bay and other sea areas, there are situations where the span, water depth, and longitudinal slope of the seabed are extremely large, and the traffic ships are busy. The traditional cross-sea bridge and immersed tub...

AI Technical Summary

Problems solved by technology

However, in my country's Bohai Bay and other sea areas, there are situations where the span, water depth, and longitudinal slope of the seabed are extremely large, and the traffic ships are busy. The traditional cross-sea bridge and immersed tube tunnel structure cannot meet the construction requirements, which makes the construction difficult. Prominent problems such as long construction period

[0003] The suspension tunnel (also known as the Archimedes bridge) has the characteristics of small longitudinal slope, fast construction speed, and is not affected by earthquakes and strong sea winds. At present, there is no actual construction case

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