Locally-embedded steel pipe concrete column type aseismatic bridge pier

Abstract

The invention provides a locally-embedded steel pipe concrete column type aseismatic bridge pier, and belongs to the technical field of structural design of bridges. The aseismatic bridge pier comprises longitudinal ribs, stirrups, steel pipes, common strength concrete, high strength concrete and a bridge pier foundation. According to the bridge pier, a steel pipe concrete column is locally embedded to the reinforced concrete bridge pier, the advantage of high ductility of the common strength concrete bridge pier and the advantages of high pressure resistance, high shear resisting, high bearing capacity and high ductility of the steel pipe high strength concrete are fully utilized, and therefore, the shear resistance, the pressure resistance, the bearing capacity, the ductility and the energy consumption capacity of the bridge pier can be improved, the bridge pier can be avoided shearing damaging and bending conquassation, and as a result, the aseismatic performance of the reinforced concrete bridge pier can be effectively improved; the steel pipe concrete column is embedded in the local maximum force bearing range of the bridge pier, so that the purpose of the improving the aseismatic performance of the bridge pier is achieved, and the purpose of minimizing the cost of the bridge pier and the construction difficulty can be reached. The bridge pier can be widely applied to the field of bridge construction design.

Description

technical field [0001] The invention belongs to the technical field of bridge structure design, and relates to a structural design of main parts of a bridge, in particular to a reinforced concrete anti-seismic bridge pier partially embedded with steel pipe concrete columns. Background technique [0002] Previous earthquakes have shown that the damage to the piers of girder bridges is the most common bridge earthquake damage. Bridge piers are key stress-bearing components of girder bridges. The fracture or collapse of reinforced concrete piers caused by earthquakes will lead to the overall collapse of the bridge. Excessive displacement of bridge piers after damage will cause earthquake damage such as falling beams and collisions between beams. Large residual deformation will make the bridge irreparable after the earthquake. [0003] There are mainly two serious failure forms of reinforced concrete piers: (1) shear failure due to insufficient shear resistance; (2) bending col...

AI Technical Summary

Problems solved by technology

Bridge piers are key stress-bearing components of girder bridges. The fracture or collapse of reinforced concrete piers caused by earthquakes will lead to the overall collapse of the bridge. Excessive displacement of bridge piers after damage will cause earthquake damage such as falling beams and collisions between beams. Large residual deformation will make the bridge irreparable after the earthquake

[0003] There are mainly two serious failure forms of reinforced concrete piers: (1) shear failure due to insufficient shear resistance; (2) bending collapse (i.e., core concrete crushing) due to insufficient ductility. Damage that is difficult to repair will cause the bridge pier to lose its vertical bearing capacity, resulting in the loss of the bridge's function or even collapse

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