Self-adaptive friction pendulum support based on electromagnetic control and resetting method

Abstract

The invention discloses a self-adaptive friction pendulum support based on electromagnetic control and a resetting method, and the self-adaptive friction pendulum support comprises a seat plate assembly, an upper support plate is provided with a first inner groove, a lower support plate is provided with a second inner groove, and the side walls of the first inner groove and the second inner groove are provided with electromagnets; the sliding assembly is arranged between the first inner groove and the second inner groove and is provided with two permanent magnets which are opposite to the electromagnets in magnetism; the reset assembly and the upper check block are connected with the upper support plate and connected with the sliding assembly through a plurality of first elastic components, and the lower check block is connected with the lower support plate and connected with the sliding assembly through a plurality of second elastic components. The sensor unit is used for detecting deformation information generated by the first elastic component and the second elastic component; and the control assembly is used for receiving the deformation information and adjusting the magnitude of the current input into the electromagnet. The self-adaptive friction pendulum support solves the problems that the shock resistance of an existing friction pendulum support is difficult to control in real time according to the magnitude of earthquake force, the existing friction pendulum support is difficult to reset completely when large residual displacement occurs, and the anti-drawing capacity is weak.

Description

technical field [0001] The invention belongs to the technical field of bridge seismic isolation, in particular to an adaptive friction pendulum bearing and a reset method based on electromagnetic control. Background technique [0002] The bridge bearing is an important part connecting the superstructure and substructure of the bridge, and it is responsible for reliably transmitting the reaction force and deformation of the superstructure of the bridge to the substructure. However, the bearing has always been regarded as the weak link in the overall seismic performance of the bridge, and its damage will directly affect the safety of the beam and the pier. In addition to earthquakes, vibrations caused by certain production activities can also cause varying degrees of damage or cumulative damage to building structures. Therefore, seismic isolation bearings are very important to the safe operation and maintenance of bridges. [0003] The friction pendulum sliding isolation met...

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes an adaptive friction pendulum bearing based on electromagnetic control. The adaptive friction pendulum bearing based on electromagnetic control solves the problem that the existing friction pendulum bearing is difficult to control its seismic capacity in real time according to the magnitude of the seismic force. It is difficult to completely reset when a large residual displacement occurs and the problem of weak pull-out resistance

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