A factory-like prefabrication construction method for immersed tube joints

Abstract

The invention discloses a factory prefabricated construction method for immersed tube joints. The construction site is equipped with a steel bar binding area, a pipe joint pouring area and 2-4 primary outfitting areas. The binding area is bound and formed, and then the hydraulic mobile trolley and steel bar binding mobile trolley are used to transfer to the pipe joint pouring area, and the full-section integral large-volume concrete is poured sequentially in several pouring sections in the pipe joint pouring area. After the concrete reaches strength, it is moved by hydraulic pressure. The trolley moves from the pipe section pouring area to the primary outfitting area for subsequent construction. Compared with the prefabricated construction of pipe joints in traditional dry dock, the factory-like prefabrication construction of this method realizes the flow construction without intervals in each division and process, the construction period of pipe joint prefabrication is short, the construction is convenient, the safety is good, and the quality control of immersed pipes is convenient. The prefabricated construction of industrial immersed tubes provides experience for reference.

Description

technical field [0001] The invention relates to the technical field of immersed tube tunnel construction, in particular to a factory prefabricated construction method for immersed tube joints. Background technique [0002] At present, the immersed tube tunnel method has gradually become a widely used form of underwater tunnel because of its short construction period and limited geological conditions. The prefabrication of pipe joints is particularly critical in the entire construction process. Usually, the dry dock method (fixed dry dock and mobile dry dock) is used for prefabrication. In recent years, it has begun to develop into factory method prefabrication. Tube prefab. [0003] The existing factory method prefabrication technology adopts the prefabrication and jacking process of small segments (each segment is 22.5m), which is mainly suitable for projects with long construction period and large factory area. It is to push and translate the steel cage of the small segm...

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Problems solved by technology

[0005] Aiming at the above-mentioned prior art, the present invention provides a factory prefabricated construction method for integral rigid immersed tube joints, the purpose of which is to overcome the flexible structure (or semi-rigid structure) segmental pipe in the existing factory prefabricated immersed tube technology. There are problems such as long construction period, large factory area, difficult concrete crack control, and difficult prefabrication of curved pipe joints.

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