Novel swing self-reset bridge pier with energy dissipation device and application thereof

Abstract

The invention relates to a novel swing self-reset bridge pier with an energy dissipation device and an application thereof, belonging to the technical field of anti-seismic and seismic mitigation andisolation of bridges. The novel swing self-reset bridge pier with the energy dissipation device comprises a cap beam (1), a pier body (2), a bearing cap (3), pile foundations (4), prestressed steel bars (6) and shear anchor bolts (7). The bearing cap (3) is anchored to the ground through the pile foundations (4), and the cap beam (1) is anchored to the bearing cap (3) through the pier body (2), the prestressed steel bars (6) and the shear anchor bolts (7). The novel swing self-reset bridge pier with the energy dissipation device further comprises a tension-compression combined energy dissipation device (5) and the tension-compression combined energy dissipation device (5) is installed and fixed at the junction of the bottom of the pier body (2) and the top surface of the bearing cap (3). The swing self-reset bridge pier has the obvious advantages of no damage after earthquake, small residual deformation and recoverable structure.

Description

technical field [0001] The invention belongs to the technical field of bridge anti-seismic and anti-seismic isolation, and in particular relates to a novel swinging self-resetting bridge pier with an energy dissipation device and its application. Background technique [0002] At present, my country's bridge seismic design code mainly adopts ductile seismic design and support seismic isolation design for seismic design. The ductile anti-seismic design method can effectively avoid the collapse of the bridge structure, but at the same time, it will cause local damage to the bridge components, especially the bridge piers, permanent residual deformation, and difficulty in repairing after the earthquake. Although the shock absorption and isolation technology of bearings can avoid local damage to bridge components, it also has defects such as limited scope of application, and the effect of shock absorption and isolation is greatly affected by the characteristics of the input ground...

AI Technical Summary

Problems solved by technology

The ductile seismic design method can effectively avoid the collapse of the bridge structure, but at the same time, it will cause local damage to the bridge components, especially the bridge piers, permanent residual deformation, and difficulty in repairing after the earthquake.

Although the shock absorption and isolation technology of bearings can avoid local damage to bridge components, it also has defects such as limited scope of application, and the effect of shock absorption and isolation is greatly affected by the characteristics of the input ground motion.

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