Reusable slope prefabricated immersed tube joint platform device and tube joint prefabricating method

Abstract

The invention provides a reusable slope prefabricated immersed tube joint platform device. The reusable slope prefabricated immersed tube joint platform device comprises a traction mechanism, a tube joint prefabricating platform, pulley mechanisms and the like, wherein the tube joint prefabricating platform is connected with the traction mechanism; the section of the tube joint prefabricating platform is in the shape of a right triangle; the upper end surface of the tube joint prefabricating platform is a horizontal plane; a plurality of pulley mechanisms with locks are fixed at the lower end of the tube joint prefabricating platform; the pulley mechanisms are positioned on slide tracks; and the slide tracks are laid along a slope. A tube joint prefabricating method comprises the following steps of selecting an embankment slope; manufacturing the platform device; prefabricating immersed tube tunnel tube joints on the tube joint prefabricating platform; pushing the tube joint prefabricating platform into water; towing the immersed tube tunnel tube joints to a position nearby a tunnel site; and sinking and butting the immersed tube tunnel tube joints. By the tube joint prefabricating platform, a large amount of large excavation is not required, a dry dock is not required to be constructed, the construction cost is saved, and the construction period is shortened; and moreover, the area of a site required by the tube joint prefabricating platform is small, the environment is not damaged, and the applicability of an immersed tube tunnel is high. The tube joint prefabricating platform can be recycled, and the construction cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of immersed tube tunnels, in particular to a reusable slope prefabricated immersed tube section platform device and a pipe section prefabrication method. Background technique [0002] The immersed tube tunnel is an underwater tunnel built through the processes of prefabrication of pipe joints, 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 area is more flexible. After successful construction, it can greatly save land resources in the central urban area. It is one of the main methods for cities to build underwater tunnels in inland rivers. [0003] The prefabrication of traditional pipe joints needs to be carried out in the dock. The construction process is to excavate the foundation pit in the adjacent waters and build a large dry dock. After the pipe j...

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Problems solved by technology

[0003] The prefabrication of traditional pipe joints needs to be carried out in the dock. The construction process is to excavate the foundation pit in the adjacent waters and build a large dry dock. After the pipe joints are prefabricated in the dry dock, they are floated to the sinking position. This method It is necessary to build a dry dock, which has a large amount of foundation pit excavation, a lot of spoil, long excavation period, high cost, great impact on the surrounding environment, and the location of the dry dock site is difficult to find

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