Steel-ultrahigh performance concrete combined bridge deck structure with short-steel-bar anti-shear structures and construction method thereof

Abstract

The invention discloses a steel-ultrahigh performance concrete combined bridge deck structure with short-steel-bar anti-shear structures and a construction method thereof. The combined bridge deck structure comprises a steel bridge deck layer (1) and an ultrahigh performance concrete layer (2) poured on the steel bridge deck layer (1). The steel bridge deck layer (1) is fixedly connected with the short-steel-bar anti-shear structures, each short-steel-bar anti-shear structure comprises a plurality of short steel bars (3) fixedly connected to the upper surface of the steel bridge deck layer (1), wherein the short steel bars (3) are horizontally arranged in the longitudinal bridge direction. The short-steel-bar anti-shear structures are wrapped in the ultrahigh performance concrete layer (2). According to the steel-ultrahigh performance concrete combined bridge deck structure with the short-steel-bar anti-shear structures, the thickness of the ultrahigh performance concrete layer can be reduced, the weight of a bridge deck can be lowered, the shear key structure is small in size and simple in construction process, and the steel-ultrahigh performance concrete combined bridge deck structure is especially suitable for large-span flexible bridges which are sensitive in bridge weight.

Description

technical field [0001] The invention belongs to the technical field of bridge structures, and in particular relates to a steel-ultra-high-performance concrete composite bridge deck structure with a short steel bar shear structure and a construction method thereof. Background technique [0002] Compared with steel bridge asphalt concrete pavement, steel bridge cement concrete pavement has the advantages of high local stiffness of the bridge deck and high fatigue life, so it is gradually adopted. In the existing steel bridge cement concrete bridge deck pavement, the shear structure adopts shear key methods such as studs, steel connectors, and PBL connectors, such as figure 1 Shown (using the peg as an example of a conventional shear key 10). The height of the conventional shear key 10 in the conventional shear structure is large, resulting in an increase in the thickness of the cement concrete pavement layer 11 of the steel bridge, causing an increase in the dead load of the ...

AI Technical Summary

Problems solved by technology

However, it is difficult to achieve a thin ultra-high performance concrete layer on the steel bridge deck if the traditional shear structure is adopted, mainly because of the high height of the traditional shear key

Therefore, for the application of ultra-high performance concrete to the steel bridge deck, the shear structure used in the traditional steel-concrete composite structure has the disadvantages of large shear key structure size and cumbersome construction technology, which is difficult to meet the requirements of the thin ultra-high performance concrete layer. Application requirements in steel bridge decks

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