An ultra-thin bridge deck structure, truss bridge and construction method of truss bridge

Abstract

The invention relates to an ultra-thin bridge deck structure, a truss bridge and a construction method of the truss bridge. The bridge deck structure includes a bridge deck, a plurality of transverse ribs arranged on the bottom surface of the bridge deck and parallel to the The longitudinal ribs on the bottom surface of the surface and parallel to the length direction of the bridge deck, the multiple transverse ribs are uniformly distributed sequentially along the length direction of the bridge deck, and the multiple longitudinal ribs are evenly distributed sequentially along the width direction of the bridge deck; There are first prestressing tendon tunnels and at least two transverse steel bars, the first prestressing tendon tunnels are gradually away from the bridge deck from outside to inside, and the transverse steel bars are located below the first prestressing tendon tunnels. The bridge deck structure of the present invention is a dense grid form formed by the interweaving of vertical and horizontal ribs, and then constitutes an integral bridge deck structure with the bridge deck. Compared with the conventional steel-concrete composite deck structure and ordinary concrete deck structure, its superior performance is highlighted, thus realizing the function of ultra-thin bridge deck and reducing self-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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