Road-rail layered bridge pier and beam combination structure suitable for multi-span long coupling and large expansion and contraction quantity beams on both sides

Abstract

The invention relate to the technical field of bridge structures, in particular to a road-rail layered bridge pier and beam combination structure suitable for multi-span long coupling and large expansion and contraction quantity beams on both sides. The road-rail layered bridge pier and beam combination structure suitable for the multi-span long coupling and large expansion and contraction quantity beams on both sides comprises a bearing platform and a bridge pier positioned on the bearing platform, and further comprises a pier-beam combination section and a beam part. The pier-beam combination section is of a reinforced concrete structure cast and fixed at the upper end of the bridge pier, and comprises beam section supporting parts for supporting the multi-span long coupling and large expansion and contraction quantity beams on both sides at two ends in the bridge direction and a beam part supporting part for bearing the beam part in the middle. The beam part is fixed to the beam part supporting part for connecting the multi-span long coupling and large expansion and contraction quantity beams on both sides, an expansion and contraction joint is reserved between the two ends of the beam part in the bridge direction and the multi-span long coupling and large expansion and contraction quantity beams on both sides, and the beam part comprises an upper deck and a lower deck. Thepier and beam combination structure skillfully solves a series of difficult problems caused by the continuous arrangement of multi-span long coupling and long-span bridges through a series of measures, effectively improves the overall arrangement of the bridge hole span, and has reasonable and safe structural stress and good economic benefits.

Description

technical field [0001] The invention relates to the technical field of bridge structures, in particular to a pier-beam combination structure suitable for layered road-rail bridges with long joints on both sides and large expansion and contraction. Background technique [0002] For bridge positions with large span requirements, spanning a wide range of waters, and deep water depths, foundation works often account for more than half of the total investment, and the number of pier installations in the water must be reduced as much as possible. The current conventional hole-span arrangement in this area is difficult to apply, and the continuous arrangement of long-connected and large-span bridges is often required. In the highway-railway layered bridge project, the problems of adopting this layout form are that the continuous setting of long-span bridges leads to long temperature spans, difficult setting of rail temperature expansion and contraction regulators, and superimpositi...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of the existing long-connected long-span bridges mentioned in the above background technology that the piers are too large, the bridge rigidity is low, and the ride comfort is poor, and to provide a bridge suitable for long-connected and large-span highways and railways on both sides. Layered pier-beam combination structure

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