Hollow slab girder bridge structure and construction method using ultra-high performance concrete filler

Abstract

The invention relates to a hollow slab girder bridge structure and a construction method using ultra-high-performance concrete fillers. The structure includes multiple hollow slab beams (2) placed side by side and hinge joints (1) connecting the multiple hollow slab beams (2), The hinge joint (1) is arranged along the length direction of the hollow slab girder (2), and includes an inclined section (8) and a vertical section (9) successively connected up and down, and the inclined section (8) adopts a superhigh Filled with performance concrete filler, the vertical section (9) is not filled. Compared with the prior art, the present invention overcomes the limitations of the structural quality or stress mode existing in the hinged joints of the traditional hollow slab girders, ensures the shear force transmission in the jointed area, and has excellent crack resistance and water seepage resistance. It improves the transverse connection performance and the overall mechanical performance of the hollow slab girder in the life cycle, ensures the clean environment of the bridge construction site and its lower area, and improves the environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of bridge engineering design and construction, in particular to a hollow slab girder bridge structure and a construction method using ultra-high performance concrete fillers. Background technique [0002] Hollow slab girder bridge is a kind of bridge structure commonly used in bridge engineering construction in our country, and it is widely used in the practical application of urban bridges and highway bridges. In the early stage of adopting the structural form of hollow slab beams in my country (about before the 1980s), the hinge joints of hollow slab girders were mostly in the form of "small hinge joints", that is, shallow hinge joint structures. In the context of the mechanical properties and durability of concrete materials at that time, the hinge joint structure was small in size, narrow in section, and had no tension bars in the joint, resulting in a relatively weak transverse connection between the tw...

AI Technical Summary

Problems solved by technology

The hinged joints of this hinged joint structure need to be equipped with steel bars, and the hinged joints except for the steel bars are all filled with concrete. There will be situations where the force state of the deep hinged joints does not match the calculation assumptions, and the amount of concrete used is huge, which is not easy environmentally friendly

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