Self-resetting energy dissipation connection device

Abstract

The invention discloses a self-resetting energy dissipation connection device, is suitable for seismic designing and seismic strengthening of bridge and building structures, and belongs to the field of bridges and buildings. The device is located between a bridge beam body and pier. A spring is arranged at the center inside the device. Soft steel energy dissipation rods are arranged on the both sides of the spring separately. The outer side of the device is provided with a slidable nested structure formed by outer limit plates and inner limit plates. The excessive displacement is prevented from being generated by using the elastic restoring force of the spring, the plastic hysteretic deformation energy dissipation principle of the soft steel energy dissipation rods, and the slidable nested structure, part of the deformation of the structure is restored, and thus the deformation of bridge nodes is restrained. By taking displacement as the excitation source, the device can not only dissipate energy input into the structure by earthquakes, but also has very good limiting and self-resetting functions, which can better meet the requirement of limiting seismic deformation of the structure, and technical supports are provided for post-earthquake structure repairing and strengthening and emergency use. The self-resetting energy dissipation connection device has the advantages of low cost, low technical requirements, good durability, and convenience in maintenance and inspection.

Description

technical field [0001] The invention relates to a self-resetting energy-consuming connection device, a novel damper with self-resetting and position-limiting functions, and belongs to the field of bridge construction. Background technique [0002] The piers of bridges are fragile components during earthquakes, and the bottom and top of the pier are artificially designed as plastic regions in order to increase the ductility of the structure, consume seismic energy, and reduce the seismic response of the bridge structure. A large number of earthquake damage characteristics of bridges show that although the plastic hinge area of ​​bridge piers can consume seismic energy under moderate earthquake conditions, it will lead to excessive deformation or even collapse of the structure during strong earthquakes, resulting in the loss of emergency use functions and post-earthquake functions of the bridge. repairability. Although the conventional dampers currently used in bridge or buil...

AI Technical Summary

Problems solved by technology

The invention can overcome the disadvantages that the existing conventional dampers cannot meet the requirements of technology and economy at the same time, and cannot improve the repairability of structures after earthquakes.

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