Abstract:

 With the development of the immersed tunnel technology and the diversification of the dock types, the distances between the tunnel sites and the docks are no longer the decisive factor for determining the dock options of immersed tunnel project. But the new problem is how to tow the tube elements in long distances with economic and reasonable efficiency. Taking the towing of the tube elements of LuntouShengwudao immersed tunnel project as example, this paper discusses the comparison and selection of the longdistance tube element towing options and the specific execution rules for tube element towing for cases in which the tube elements are prefabricated in mobile dry docks. The paper can provide reference for the design and construction of large immersed tunnels in the future.

Key words:  , immersed tunnel mobile dock tube element towingwaterway dredging