Arch-beam composition structure with subchords

Abstract

The invention discloses an arch-beam composition structure with subchords, and relates to the field of bridge engineering. The arch-beam composition structure comprises a main beam, a main arch fixedly connected with the main beam, and a number of spaced hangers and subchords connected between the main arch and the main beam. The subchords are arranged on both sides of the main arch, and the two ends of the subchords are fixedly connected with the main beam and the main arch respectively. According to the structure, the subchords are used for connecting the sidespan main beam to the main arch, the subchords provide elastic supporting points for the sidespan main beam, and thus the structure height of the side-mid-span of the main beam is greatly reduced to overcome the defect that the structure height of a beam body cannot meet the design requirements in the prior art. The arch-beam composite structure has the advantages of reducing the line elevation, shortening the bridge length, and reducing the project investment and the influence on the city; besides, and the arch-beam composite structure is shaped like a ribbon, thus enhancing the bridge landscape.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to an arch-beam composite structure with auxiliary chords. Background technique [0002] Urban river-crossing bridges generally need to cross the river and the riverside roads on both sides. From the perspective of reducing the construction scale and reducing the impact on the city, the elevation of the bridge deck should be as low as possible, and the bridge is limited by the waterway and road clearance. The main girders all require a low structural height to accommodate this requirement. [0003] The arch-beam composite structure combines the arch bridge and the girder bridge. Generally, arch ribs are added to the main span of the continuous beam, and the beams are mostly prestressed concrete structures. The beam height is constrained by the structure and materials. When the height of the bridge deck is strictly limited and it is required to ensure the clearance under the side ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an arch-beam composite structure with auxiliary chords, which use auxiliary chords to connect side-span main beams and main arches, and auxiliary chords provide elastic fulcrums for side-span main beams, thereby greatly reducing the The structural height of the middle span is to overcome the problem that the structural height of the girder body in the prior art does not meet the design requirements

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