Factory prefabricated construction method for immersed tube joints

Abstract

The invention discloses a factory prefabricated construction method for immersed tube joints. The method is characterized in that a steel bar binding area, a tube joint pouring area and 2-4 one-time outfitting areas are arranged on a construction site, an immersed tube joint bottom plate and a side wall steel reinforcement cage are bound and formed in the steel bar binding area and then transferred to the tube joint pouring area through a hydraulic traveling car and a steel bar binding moving trolley, full-section integral mass concrete sequential pouring construction is conducted on a plurality of pouring sections in the tube joint pouring area, and the concrete is moved from the tube joint pouring area to a primary outfitting area by adopting the hydraulic traveling car for subsequent construction after the concrete reaches the strength. Compared with traditional dry dock tube joint prefabricated construction, factory prefabricated construction of the method has the advantages that interval-free flow construction of all subareas and procedures is achieved, the prefabricated construction period of the tube joints is short, construction is convenient, safety is good, quality control of the immersed tubes is facilitated, and referential experience is provided for later factory prefabricated construction of the immersed tubes.

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...

AI Technical Summary

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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