Assembled recycled steel pipe concrete Y-shaped bridge pier

Abstract

The invention discloses a splice mounting type recycled concrete-filled steel tube Y-shaped bridge pier which is formed by welding a Y-shaped steel pipe, a steel pipe tie beam and a splice mounting flange. Bridge bearings are arranged at the tops of two arms of the Y-shaped steel pipe which serve as a bridge pier body, the steel pipe tie beam is positioned above a bifurcation of the Y-shaped steel pipe and welded to the two arms of the Y-shaped steel pipe, and the splice mounting flange is arranged at the bottom end of the Y-shaped steel pipe; recycled aggregate concrete is poured into the Y-shaped steel pipe. The splice mounting type recycled concrete-filled steel tube Y-shaped bridge pier can be applied to urban overpasses, procedures of shuttering, tying steel bars, removing form boards and the like of conventional concrete bridge piers are saved, and accordingly Y-shaped bridge pier construction can be accelerated greatly; in addition, the splice mounting type recycled concrete-filled steel tube Y-shaped bridge pier enables the recycled aggregate concrete to be applied to bridge engineering, popularization and application of the recycled concrete and recycling of construction wastes are benefited, and consequently economic benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of steel and concrete composite structures and hybrid structures, and relates to special-shaped steel pipe concrete piers, in particular to an assembled regenerated steel pipe concrete Y-shaped bridge pier. Background technique [0002] Bridges such as urban viaducts and overpasses that pass multi-layer traffic are different from ordinary highway bridges. Traffic still needs to pass under the bridge, which has a relatively large limitation on the area occupied by the piers. Therefore, urban viaducts and overpasses usually use single-column or special-shaped piers. However, since single-column piers can usually only be arranged with a single support, resulting in weak anti-overturning ability of the bridge, and Y-shaped piers can be arranged with double supports on the top, thereby improving the anti-overturning ability of the bridge, so urban bridges often use Y-shaped piers. In the construction of ordinar...

AI Technical Summary

Problems solved by technology

However, due to the influence of the old mortar attached to the recycled aggregate, compared with ordinary concrete, recycled concrete is more prone to microcracks under uniaxial pressure, and the uniaxial compressive strength of recycled concrete is generally lower than that of ordinary concrete, which affects its promotional application

Recycled concrete cannot be applied to structures such as bridge piers that require high concrete pressure resistance.

Images