Caisson dock gate

Abstract

The invention relates to the technical field of immersed tube tunnel construction and discloses a caisson dock gate. The caisson dock gate comprises a caisson and a steel buttress, wherein the steel buttress is arranged at the front end of the caisson; the caisson consists of a plurality of warehouse grids; water drainage pipes and submersible pumps are arranged in the warehouse grids; the water drainage pipes are connected with the submersible pumps. The caisson dock gate adopts the caisson structure with the multiple warehouse grids, so that the weight of the dock gate is reduced by draining water from the warehouse grids during opening of the dock gate, and the weight of the dock gate is increased by feeding water into the warehouse grids during closing of the dock gate; therefore, the dock gate is easy to open and close; furthermore, the steel buttress is arranged at the front end of the caisson, so that corrosion of seawater to the caisson can be alleviated.

Description

technical field [0001] The invention relates to the technical field of immersed tube tunnel construction, in particular to a caisson dock door. Background technique [0002] In the factory-based immersed tube prefabrication plant, after the immersed tube prefabrication is completed, it must be stored in shallow docks, and the pipe joints must be floated to the deep dock area for secondary outfitting and undocking and sinking installation. [0003] Since the elevation of a ship in a shallow dock is above the normal water level, and the inner height of the pipe is generally more than 10m, a certain amount of water depth must be left during the floating process of the pipe joints, so the water height of the shallow dock can generally be more than 11m. [0004] Similarly, the deep dock area must have enough water depth to satisfy the undocking of the immersed tube under normal water level conditions. Therefore, the height of the deep dock door must be the height of the deep dock...

AI Technical Summary

Problems solved by technology

[0005] The dock door of a conventional small-scale immersed tube prefabrication plant adopts a steel structure or steel concrete caisson structure. If a steel structure is used, the dock door itself is light in weight and cannot adapt to large docks such as large load-bearing area and high water head difference. At the same time, because the structure is severely corroded by seawater, the later maintenance costs are high

If a reinforced concrete caisson structure is used, the weight of the caisson itself is relatively large, and construction and opening and closing are difficult

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