Large-span arch bridge empty case cast-in-situ arch ring template system and construction method thereof

Abstract

The invention discloses a large-span arch bridge empty case cast-in-situ arch ring template system and a construction method thereof. The template system comprises a template structure, a supporting bracket body and an arc ring; the template structure comprises a bottom template, a bottom template keel, a cover template and a cover template keel; the cover template comprises a fixing front-positioned template unit and a moving back-positioned template unit; the cover template keel comprises a front-positioned keel unit and a back-positioned keel unit. Side walls of a front-positioned edge anda back-positioned edge are oblique faces which are adapted to each other in orientation and closed to each other. The construction method includes factory processing of the cover die, the bottom template construction, cover template construction, concrete pouring, and others. The construction method is simple and convenient to operate; the structure concrete has good quality and shaping; the cast-in-situ arch ring template system can be applied to the concrete casting of the bottom plate and the top plate of the cast-in-situ box type arch ring structure, and also applied to the template systemof other cast-in-situ large slope bevel reinforced concrete structure.

Description

technical field [0001] The invention relates to a formwork system, in particular to a formwork system and a construction method for a large-scale steep-slope reinforced concrete structure. Background technique [0002] In the prior art, in the cast-in-situ arch ring formwork system of the hollow box chamber of the large-span arch bridge, the cover formwork is generally constructed with ordinary wooden formwork. Generally, there are the following problems: Concrete needs to be conveniently poured and vibrated during the pouring process, so the cover form can only be supported in layers, and the concrete also needs to be constructed in multiple times. It is impossible to pour a large amount of concrete at one time, resulting in formed concrete. There are many construction joints. At the same time, the cover mold of the common formwork system cannot be recycled, the installation and removal of the cover mold is troublesome, the damage of the formwork is large, and the material...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of cast-in-situ arch ring formwork system and its construction method for large-span arch bridge hollow box room, to solve the problem of many concrete construction joints caused by the layered support of the cover form in the existing formwork system, and the installation and removal of the cover form Trouble, large amount of formwork damage, waste of materials, waste of cost, and technical problems that are very difficult for on-site construction

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