A steel-concrete beam rigid-frame arch bridge

Abstract

The invention relates to the technical field of bridge structure, in particular to a steel reinforced concrete beam rigid framework bridge. The bride comprises a pile foundation, bearing platforms grouted on the foundation, bridge piers supported by the bearing platforms and beam bodies supported by the bridge piers. The beam bodies comprise two concrete beams and steel box beams located between two concrete beams. Two concrete beams are fixed on the upper end of the bridge section, and are erected in the bridge sidespan section and partial midspan section along the positive direction of the bridge. The steel box beams are the steel beams erected in the midspan section along the bridge positive direction. Two ends of the steel box beams in the bridge positive direction are fixed to the ends of two concrete beams respectively. Reinforcing structures providing vertically upward forces to the box beams are arranged on the box beams. The steel reinforced concrete beam rigid framework bridge has the advantages is simple in structure. The spanning capability of the midspan section can be effectively elevated by the arrangement of the steel box beam structures. The negative effects brought by the concrete beam contraction and creeping can be relieved. The construction schedule is shortened. The steel reinforced concrete beam rigid framework bridge has a big promotion value.

Description

technical field [0001] The invention relates to the technical field of bridge structures, in particular to a steel-concrete beam rigid frame arch bridge. Background technique [0002] For the traditional concrete-filled steel tube rigid frame arch bridge, due to the shrinkage and creep of the concrete in the beam part, the deflection effect on the bridge pier and the foundation occurs, and a large stress is generated in the beam body, bridge pier and pile foundation, which will have adverse effects on the bridge pier and pile foundation. affect the safety of the bridge. Moreover, the shrinkage and creep of the beam body will also have adverse effects on the beam body itself, especially in the mid-span section of the beam body with a large span. Cracks will occur, affecting the safety and durability of the bridge. In addition, due to the heavy concrete weight of traditional concrete bridges, the beam structure is generally carried out by cantilever construction, and the con...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the concrete bridge of the prior art mentioned in the above background technology has adverse effects on the bridge due to shrinkage and creep, and to provide a steel-concrete beam rigid frame arch bridge

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