Structural system for flatly prefabricating and modularly transporting large-scale immersed tube tunnel tube section

Abstract

The invention discloses a structural system for flatly prefabricating and modularly transporting a large-scale immersed tube tunnel tube section. The structural system for flatly prefabricating and modularly transporting the large-scale immersed tube tunnel tube section comprises a land area prefabrication platform, a modular transportation platform, and an ultra-large type pipe section transportation barge, wherein the land area prefabrication platform comprises a bottom steel plate for supporting the tunnel tube section and multiple rows of support pillars; the tunnel tube section is transported by land through the land area prefabrication platform; the modular transportation platform is used for sending the tunnel tube section to the transportation barge and then retreating, is capableof automatically adjusting the height, and comprises multiple communicated transportation modules; the transportation modules are arranged on the bottom part of the bottom steel plate and are locatedbetween the adjacent support pillars; and the ultra-large type pipe section transportation barge is used for transporting the tunnel tube section in a water area. According to the structural system for flatly prefabricating and modularly transporting the large-scale immersed tube tunnel tube section provided by the invention, a dry dock has no need to be built, so that the input of an immersed tube tunnel construction temporary project is reduced, the immersed tube tunnel cost and the construction period are saved; the requirement on the floor space required for tube section prefabrication issmall, so that the applicability of the immersed tube tunnel is higher; the tube section is transferred through the modular transportation platform, so that the transportation modes are flexible; andthe requirement on the fairway depth is low, so that the dredging of an existing fairway can be avoided or reduced.

Description

technical field [0001] The invention relates to the technical field of building underwater tunnels in rivers, rivers, lakes and seas, in particular to a structural system for prefabricating and modularly transporting large-scale immersed tunnel pipe sections on flat ground. Background technique [0002] The traditional immersed tube tunnel is an underwater tunnel built through the processes of prefabrication in the dock, towing and floating, sinking and docking, foundation treatment, backfilling and covering. The top cover is shallow, the tunnel length is short, and the connection with the roads on both sides of the water is more flexible. After successful construction, it can greatly save land resources in the central city or on both sides of the water. It is one of the main methods for building inland underwater tunnels in urban rivers, lakes, and seas. one. [0003] The length of a section of a large-scale immersed tube tunnel is generally more than 100m, and the weight ...

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Problems solved by technology

[0003] The length of a section of a large-scale immersed tube tunnel is generally more than 100m, and the weight is more than 50,000 tons. The dry dock is the prefabricated place for the immersed tube section. Traditionally, the pipe section is made by excavating foundation pits next to rivers, lakes, and oceans to build large-scale dry docks near water. After the pipe section is prefabricated at the bottom of the dry dock, water is injected into the dry dock to make the pipe section float, and then the pipe section is hauled to the position of the tunnel for sinking. Due to dense objects, it is difficult to find a suitable dry dock site. Whether the dry dock can be built also determines whether the immersed tube tunnel construction method is feasible. These restrict the use and promotion of immersed tube tunnels to a certain extent, making it difficult to , using other methods that consume more land resources

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