Gradient-structure composite bridge pier

Abstract

A gradient-structure composite bridge pier comprises a round steel pipe, fiber-reinforced powder concrete and a corrugated steel pipe from inside to outside. Outward square stiffening ribs are welded to the round steel pipe, and the closed corrugated steel pipe is arranged outside the round steel pipe; and the fiber-reinforced powder concrete is cast between the corrugated steel pipe and the round steel pipe, and the square stiffening ribs are contained in the fiber-reinforced powder concrete. By means of the gradient-structure composite bridge pier, the self weight of the bridge pier can be reduced, and the bearing capacity and the anti-seismic property of the bridge pier can be improved; and through industrialized production and field assemblage, the construction speed of the bridge pier can be increased, and the construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering and relates to a composite bridge pier with gradient structure. Background technique [0002] As an important part of the bridge structure, the bridge pier not only bears the load from the superstructure, but also transmits the load and its own weight to the foundation through the foundation, so its structural safety is very important. However, in previous earthquakes, the damage of bridge piers is relatively common, which often leads to the collapse or overturning of the bridge as a whole and interrupts traffic, which not only brings huge economic losses and casualties, but also seriously hinders the smooth progress of earthquake relief and exacerbates earthquake disasters. disaster. [0003] At present, the most widely used bridge piers in our country are reinforced concrete bridge piers, which have high strength and rigidity, but their ductility and energy dissipation capacity are p...

AI Technical Summary

Problems solved by technology

Compared with steel piers, concrete-filled steel pipe piers increase the stiffness of the section, and rely on the hoop effect of steel pipes to further improve their bearing capacity and seismic performance. However, due to the use of ordinary concrete materials, the excellent mechanical properties of steel have not been fully utilized.

Images