Structure for prefabricating bridge deck slab and reducing cracks in severe area and construction method thereof

Abstract

The invention discloses a structure for prefabricating a bridge deck slab and reducing cracks in a severe area and a construction method thereof. The structure for prefabricating the bridge deck slab and reducing the cracks in the severe area is composed of a modular type splicing prefabricated base and a splicing movable type curing shed, the modular type splicing prefabricated base is of an integrated structure formed by butting a plurality of module bases through adjacent edges and used for providing prefabricated parts, and the splicing movable type curing shed is connected to the upper end of the modular type splicing prefabricated base in an inserted mode and used for effectively improving curing conditions of concrete members. The structure is high in safety performance, high in modular installation speed, convenient to use and is convenient to circulate, reduces the cracks, is suitable for prefabrication of various components, not limited by the sizes of the components and not limited by the site scale, solves the influence of site space and environment, reduces the cracks, avoids material waste and damage of the cracks to the structure, improves the construction quality of the prefabricated components, and improves the durability of the structure.

Description

technical field [0001] The invention relates to a structure for prefabricating and reducing cracks of a bridge deck in a bad area and a construction method thereof. Background technique [0002] Harsh areas include hillside areas, areas with steep terrain, areas with harsh terrain, large temperature difference between day and night, strong wind, dry high temperature, low air humidity and other harsh climate areas. Road construction in harsh areas often uses pier columns as the supporting structure for the road and the ground. Composite beams and reinforced concrete decks are used as road surfaces, and composite beams and reinforced concrete decks are all prefabricated components. Usually, each reinforced concrete bridge deck is transported to the construction site one by one by a large beam slab transport vehicle after the prefabricated component factory is completed, and then hoisted by a crane to the longitudinal bridge to the upper part of the adjacent two high cover beam...

AI Technical Summary

Problems solved by technology

It is necessary to build a long-distance and high-standard construction beam transportation channel, and the construction cost is relatively high

Moreover, there are extremely high safety risks in mountain transportation, which is not conducive to safety.

If it is prefabricated on site, it is difficult to achieve the flat and hard condition of the bottom surface of the prefabricated parts due to the harsh terrain

At the same time, this area is a region with strong winds, large temperature differences, low air humidity and harsh climate. If the prefabrication of beams and slabs is carried out on site, due to the variety of prefabricated components, the thickness of the slabs is thin, and the storage and maintenance period is long, it is limited by the prefabricated site. If most prefabricated components are placed in the open air or are cured with simple geotextile wrapping and watering, the curing effect will be poor, especially in areas with strong winds, large temperature differences, and low air humidity. The impact will produce cracks, resulting in the construction effect not meeting the design and specification requirements, and the quality is difficult to guarantee

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