Self-resetting bridge pier adopting replaceable energy dissipation beam column connecting joints

Abstract

The invention relates to a self-resetting bridge pier adopting replaceable energy dissipation beam column connecting joints, and belongs to the technical field of civil engineering energy dissipation and shock absorption. The structure mainly comprises a pier column, a foundation, a cover beam and a straining beam, wherein the pier column, a bearing platform and the cover beam are integrally poured. An embedded part is arranged in the pier column, a pier column lug plate is fixedly connected to the embedded part, and wedge-shaped bodies are fixedly arranged on the pier column lug plate and the straining beam. The groove in the surface of the upper wedge-shaped body of the pier stud lug plate is completely attached to the groove in the surface of the upper wedge-shaped body of the straining beam, and a friction plate is arranged on the surface of the groove. Holes are formed in the middle of the pier stud lug plate, the middle of the pier stud lug plate wedge-shaped body, the middle of the tie beam and the middle of the tie beam wedge-shaped body. The high-strength rod sequentially penetrates through the disc spring, the tie beam, the pier stud lug plate, the tie beam and the disc spring and is connected together through prestress. The problem that plastic hinges appear at the connecting part of the straining beam and the pier column, residual displacement is too large, and repairing cannot be conducted after an earthquake is solved, and the pier is effectively protected.

Description

technical field [0001] The invention relates to a self-resetting bridge pier adopting replaceable energy-consuming beam-column connection nodes, and belongs to the technical field of energy dissipation and shock absorption in civil engineering. Background technique [0002] Earthquake disasters are characterized by suddenness, low predictability and high randomness, and are extremely destructive. Especially when medium and large earthquakes occur, huge seismic energy will be released, which will cause great damage to the structure. Even if the overall integrity of the structure is maintained, the large plastic deformation generated in the earthquake and the residual damage left after the earthquake Residual deformation will reduce the ability of the structure to resist aftershocks. Severe damage requires extensive reinforcement and repair, and even reconstruction results in huge waste. [0003] As one of the lifeline projects, the construction cost of the bridge is high. On...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the background technology, especially the damage of the plastic hinge area of ​​the pier under the action of strong earthquakes is very serious, and a large residual displacement is generated, and the post-earthquake repair work is very difficult. A replaceable energy-consuming Self-resetting piers at beam-to-column joints

Images