Railway pier and beam combining structure suitable for multi-span long coupling and large expansion and contraction quantity beams on two sides

Abstract

The invention relates to the technical field of bridge structures, in particular to a railway pier and beam combining structure suitable for multi-span long coupling and large expansion and contraction quantity beams on two sides. The railway pier and beam combining structure comprises a bearing platform and a pier located on the bearing platform, and is characterized by further comprising a pierand beam combining section and a beam part; the pier and beam combining section is of a reinforced concrete structure which is fixed at the upper end of the pier in a pouring mode, the pier and beam combining section comprises beam section supporting parts and a beam part supporting part, wherein the beam section supporting parts are located at the two ends in the bridge direction and used for bearing the multi-span long coupling and large expansion and contraction quantity beams on two sides, and the beam part supporting part is located in the middle and used for bearing the beam part; the beam part is fixed on the beam part supporting part and is used for connecting the multi-span long coupling and large expansion and contraction quantity beams on two sides, and expansion joints are 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 two sides. According to the pier and beam combining structure, a series of problems of continuous arrangement of the multi-span long coupling and large expansion and contraction quantity beams are solved skillfully through a series of measures, the overall arrangement of bridge hole spans is effectively improved, the structure stress is reasonable and safe, economic benefits are good, and the railway pier and beam combining structure is a structural form worthy of being widely popularized.

Description

technical field

[0001] The invention relates to the technical field of bridge structures, in particular to a pier-beam combination structure suitable for railway 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 railway bridge or highway-rail level 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 expansion regulators, and superpositio...

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