Reinforced Concrete Bridge Pier System Confined by Steel Tubes

Abstract

The invention provides a steel tube confinement reinforced concrete bridge pier system. A steel tube covers the outside of each reinforced concrete pier of a steel tube confinement reinforced concrete bridge pier; each steel tube is broken at the end part of the corresponding bridge pier, and does not directly bear a vertical load; the occurrence of local flexion is avoided; the broken steel tubes can provide greater lateral confinement than steel tubes directly bearing the vertical load, so that the bridge pier has good carrying force, ductility and energy dissipation capacity; and the steel tubes can be used as formworks in a construction period. The invention also provides a groove type steel tube externally covered reinforced concrete beam connected with a lateral support of the steel tube confinement reinforced concrete bridge pier. Steel plates cover the outsides of the bottom surface and the two side surfaces of the reinforced concrete beam for forming groove type steel tubes, and anchoring steel bars welded on the end parts of the steel tubes are connected with steel tube confinement reinforced concrete posts. The steel tubes can provide the effects of bottom stress longitudinal beams for the beam, and can be used as concrete formworks during the construction, and the construction progress is accelerated.

Description

technical field [0001] The invention belongs to a building structure system, in particular to a steel-concrete composite structure pier system. Background technique [0002] The reinforced concrete bridge piers commonly used at present often lead to brittle bending-shear failure or shear failure due to insufficient stirrup restraint in destructive earthquakes. In order to improve the mechanical properties of bridge piers, the invention proposes a steel pipe-constrained reinforced concrete bridge pier system. The reinforced concrete bridge piers bounded by steel pipes are steel pipes outsourcing the reinforced concrete piers. The steel pipes are disconnected at the end of the piers and do not directly bear the vertical load, which avoids the occurrence of local buckling. Compared with the steel pipes that directly bear the vertical load, they can provide greater lateral Constraints, so that the bridge piers have good bearing capacity, ductility and energy dissipation perform...

AI Technical Summary

Problems solved by technology

[0002] The reinforced concrete piers commonly used at present often lead to brittle bending-shear failure or shear failure due to insufficient stirrup restraint in destructive earthquakes

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