Prefabricated assembled FRP-profile steel-concrete combined bridge deck slab and construction method thereof

Abstract

The invention relates to a prefabricated assembled FRP-profile steel-concrete combined bridge deck slab and a construction method thereof. The prefabricated assembled FRP-profile steel-concrete combined bridge deck slab comprises an FRP formwork, prestressed I-shaped steel, reinforcing meshes, corrugated pipes and concrete. The FRP formwork comprises an FRP bottom formwork and four FRP baffles. The prestressed I-shaped steel comprises I-shaped steel, prestress memory alloy ribs and connecting pieces. The prestressed I-shaped steel is arranged on the FRP bottom formwork at intervals in the transverse direction of the bridge, and circular holes are reserved in webs of the I-shaped steel. The reinforcing meshes are connected to the upper and lower flanges of the prestressed I-shaped steel. The corrugated pipes are connected in the holes of the formwork and the section steel. The concrete, the FRP template, the prestressed I-shaped steel and the reinforcing meshes form a whole body to be stressed together. According to the combined bridge deck slab, the bearing capacity of a bridge is greatly enhanced, the consumption of steel can be obviously reduced, the manufacturing cost is reduced, and the self-weight of the bridge deck slab structure is reduced. Through the use of the FRP bottom formwork, corrosion resistance can be achieved, and durability is improved. Moreover, the characteristics of light weight and high rigidity are achieved, the construction efficiency can be improved, and the combined bridge deck slab has wide application prospects.

Description

Technical field [0001] The invention relates to a prefabricated assembled FRP-shaped steel-concrete composite bridge deck and a construction method thereof, and belongs to the technical field of bridge engineering. Background technique [0002] With the rapid economic development, my country has already increased the construction of roads and bridges, such as the Hong Kong-Zhuhai-Macao Bridge that has just opened. The construction of large bridges adopts prefabricated and assembled structures, and the bridge deck is an important part of it. The bridge deck is a slab connected between the columns for vehicles to travel. It is in direct contact with the load. It mainly bears the repeated action of the vehicle load and transmits it to the beam. It is a part of the bridge structure that is prone to damage. At present, the structural forms of bridge decks mainly include reinforced concrete decks (RC panels), prestressed concrete decks (PC panels) and steel decks. [0003] Reinforced c...

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Problems solved by technology

[0005] The purpose of the present invention is to address the above-mentioned existing problems, to provide a prefabricated assembled FRP-shaped steel-concrete composite bridge deck and its construction method, which is used to solve the problems of bridge decks in existing projects, such as heavy weight, material consumption, and cumbersome construction.

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