Immersed tube structure applicable to high flow velocity and construction method thereof

Abstract

The invention discloses an immersed tube structure applicable to high flow velocity and a construction method thereof, and belongs to the field of immersed tubes. The immersed tube structure applicable to high flow velocity comprises an immersed tube body, wherein a passage for traffic is arranged in the immersed tube body, a plurality of flow guide covers are arranged on one side of the immersedtube body along the length direction, elastic bag bodies are arranged on the outer side of the flow guide covers, a protrusion control device is arranged in each flow guide cover, the protrusion control devices support the elastic bag bodies so as to control the protrusion degree of the elastic bag bodies, and the protrusion degree of each flow guide cover can be independently adjusted. Accordingto the flow speed of water flows, the protrusion degree of the elastic bag bodies is adjusted through the protrusion control devices, the acting face of the water flow on the elastic bag bodies is changed, the direction of the water flow flowing through the surface of the elastic bag bodies is changed, the acting force of the water flow on the immersed tube body is changed, and the influence of the water flow on the immersed tube body can be reduced when the water flow speed is large.

Description

technical field [0001] The invention relates to the field of immersed tubes, in particular to an immersed tube structure suitable for high flow rates and a construction method thereof. Background technique [0002] The immersed tube method is the abbreviation of the prefabricated pipe section immersed method, and it is a construction method for building tunnels under water. The construction sequence is to first make the tunnel pipe section (using steel plate and concrete or reinforced concrete) on the berth or in the dry dock, seal the two ends of the pipe section with a temporary sealing wall, and then slide into the water (or release water in the dock) to make it float in the water , and then dragged to the tunnel design location. After positioning, load the pipe section to make it sink into the pre-dug underwater trench. The pipe sections are lowered section by section, and the adjacent pipe sections are connected by hydraulic crimping. Finally, the sealing wall is rem...

AI Technical Summary

Problems solved by technology

[0004] When the flow rate changes, the immersed tube is easy to shake when placed, which makes it impossible to control the sinking accuracy within an appropriate range, which greatly increases the installation time of the immersed tube

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