Fabricated prestressing force temporary sealing cover construction method

Abstract

The invention relates to a fabricated prestressing force temporary sealing cover construction method. The position of a mortar scraper is controlled by a scraper calibration body and a scraper supporting rod, and the heights of the mortar scraper and a mortar infusion tube are controlled through the scraper calibration body and a transposition bolt; a retaining wall side mold and a retaining wallreinforcement cage are connected through side mold tie bars and a tie bar anchor plate, and an assembled connecting beam is arranged at the top of a concrete retaining wall; a first sliding strut anda second sliding strut control the positions of a limit horizontal plate and a concrete infusion tube; a beam side mold and a beam bottom mold of a coping beam are connected with a hoop support body,and the position of the beam side mold is controlled by a side mold limit body; a groove tenon module and a connection rib insertion body are synchronously arranged on a beam end mold; and a top support screw, an inner pressure bar and an inner pressure plate are arranged between prefabricated beams, and sealing strips are arranged on a joint bottom mold and a closed top plate. The invention can improve the quality of concrete pouring and maintenance construction, improves the stress performance of the construction structure, and reduces the difficulty of mold plate support and positioning.

Description

technical field [0001] The invention relates to a construction method of an assembled prestressed temporary cover that can improve the efficiency and quality of on-site construction, improve the mechanical performance of the construction structure, and reduce the difficulty of formwork support and positioning. It belongs to the field of foundation pit engineering and is suitable for assembly-type Prestressed cover construction works. Background technique [0002] For the subway station or foundation pit project constructed by the cover-excavation method, problems such as efficient drainage system, integrity improvement of support structure, and rapid deployment of cover structure are often faced during the construction process. Reasonable solutions to these problems will not only generate a certain amount of engineering economic benefits, and will produce significant social benefits. [0003] In the prior art, there is a new cover-excavation method of invisible bridge type ...

AI Technical Summary

Problems solved by technology

Although this construction technology uses cast-in-place slab girders as temporary cover plates, it reduces the amount of temporary support and improves construction efficiency, but it still needs further research in terms of improving the quality of concrete pouring

[0004] In summary, the existing construction technology has achieved good application results under suitable working conditions, but there are still some shortcomings in reducing the difficulty of formwork support and positioning, improving the mechanical performance of the construction structure, and improving the integrity of the construction structure. What can be further improved

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