Ultra-thin bridge deck structure, truss bridge and construction method of truss bridge

Abstract

The invention relates to an ultra-thin bridge deck structure, truss bridge and construction method of truss bridge. The bridge deck structure comprises a bridge deck, a plurality of transverse ribs arranged on the bottom surface of the bridge deck and parallel to the width direction of the bridge deck, and a plurality of longitudinal ribs arranged on the bottom surface of the bridge deck and parallel to the length direction of the bridge deck, wherein the plurality of transverse ribs are uniformly distributed along the length direction of the bridge deck, and the plurality of longitudinal ribsare uniformly distributed along the width direction of the bridge deck; the transverse rib is provided with a first prestressed reinforcement hole channel and at least two transverse reinforcement bars, the first prestressed reinforcement hole channel is gradually away from the bridge deck from the outside to the inside, and the transverse reinforcement bars are positioned below the first prestressed reinforcement hole channel. The bridge deck structure of the invention is in the form of dense grid formed by interweaving longitudinal and transverse ribs, and then forms an integral bridge deckstructure with the bridge deck. Compared with conventional steel-concrete composite bridge deck structure and ordinary concrete bridge deck structure, its overall stiffness is large and its weight islight, and its superior performance is prominent, thus realizing the function of ultra-thin bridge deck and lightening dead weight.

Description

technical field [0001] The invention relates to an ultra-thin bridge deck structure, a truss bridge and a construction method of the truss bridge, belonging to the field of bridges. Background technique [0002] Urban double-layer traffic bridges are not only the needs of traffic, but also a symbol of urban development and progress. In order to save land, it is the general trend to develop urban double-layer traffic bridges at home and abroad. Existing double-deck bridges have a variety of structural systems, and the appropriate bridge type can be selected according to the environmental conditions. [0003] There are two types of girder bridges suitable for double-deck traffic: box girder bridges and truss girder bridges. [0004] Nanchang Bridge is the first bridge in my country that uses box girders to realize double-deck traffic. It was completed and opened to traffic in 1995. The total length of the bridge is 2780m (including the east-west approach bridge of 801.55m), ...

AI Technical Summary

Problems solved by technology

However, its conventional bridge deck structure is complex, thick and heavy, and it is urgent to apply newer bridge technology to solve it.

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