Construction technology of self-propelled semi-submersible ship to ship large immersed tubes

Abstract

The invention provides a construction process for shipping large sinking pipes by a self-propelled semi-submerged ship for transporting the sinking pipes from a sinking pipe prefabrication factory to a foundation trench region for sinking pipe mounting construction. A mooring and outfitting region is arranged next to the foundation trench region, the semi-submerged ship loads the sinking pipes in a deep dock of the sinking pipe prefabrication factory and transports the same to the mooring and outfitting region, and after an outfitting step of the sinking pipes in the mooring and outfitting region is finished, the sinking pipes are transported to the foundation trench region in a floating manner through a sinking pipe mounting ship and a tug. According to the construction process for shipping large sinking pipes by the self-propelled semi-submerged ship provided by the invention, the floating transportation distance of the sinking pipe is greatly reduced, and the work efficiency of transporting the sinking pipe to 3-4 times; secondly, as draft of the semi-submerged ship which transports the sinking pipes is smaller compared with that of sinking pipe floating transportation in the prior art, the requirement on channel depth is greatly reduced. The channel needs not to be excavated, so that the time and economical costs are further saved; furthermore, the requirements on natural conditions such as a water wave flow by transporting the sinking pipes by the semi-submerged ship are relatively low, the limiting condition of transporting the sinking pipes is reduced, and the work efficiency of transporting the sinking pipes is further improved.

Description

technical field [0001] The invention belongs to the technical field of water transport engineering construction in transportation, and in particular relates to a construction technique for transporting large immersed pipes by a self-propelled semi-submersible ship. Background technique [0002] The underwater tunnel is composed of multiple immersed tubes with huge volume and weight connected to each other. The main types of immersed tubes are steel shell concrete immersed tubes and reinforced concrete immersed tubes. At present, the processing and transportation methods of immersed tubes are mainly two-step method. That is, the immersed tube prefabrication and concrete pouring are first carried out in the immersed tube prefabrication plant, and the outfitting installation process is completed, and then the immersed tube is floated for a long distance to the immersed tube construction foundation tank area by hauling equipment for immersed tube installation. Due to the huge we...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems of low transportation efficiency of immersed tubes and high requirements on waterway and hauling equipment in the prior art, the present invention proposes an immersed tube transportation process with high transportation efficiency, which can shorten the floating distance of immersed tubes and reduce the Requirements for the depth and width of the floating channel, and has a wide range of versatility

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