Electrically-controlled frictional damping seismic mitigation and isolation spherical support

Abstract

The invention discloses an electrically-controlled frictional damping seismic mitigation and isolation spherical support which comprises a lower support plate, an upper support plate and an upper support plate,an upper support plate;The invention discloses an electrically-controlled frictional damping seismic mitigation and isolation spherical support comprises a lower support plate, an upper support plate, a friction assembly, a vibration detection device, a controller and a main circuit; the upper support plate is supported on the lower support plate through the friction assembly, the friction assembly is provided with at least one spherical friction interface, and lubricants matched with all the friction interfaces of the friction assembly are lubricants with a ferroelectric hysteresis effect; a power adjusting device arranged on the main circuit is connected with the controller so as to adjust the output power of the main circuit according to vibration intensity, and the main circuit is connected to friction components forming the friction interfaces; correspondingly, the back sides, relative to the friction interfaces, of the friction components are provided with insulating layers or made of insulating materials, and if the friction components are made of the insulating materials, conductive layers connected with the main circuit are embedded in the friction components. With the support adopted, seismic intensity responsiveness is good.

Description

technical field [0001] The invention relates to a shock-absorbing and isolating spherical bearing. Background technique [0002] There are many types of bridge bearings, such as spherical bearings, plate rubber bearings, pot rubber bearings, etc. There are two main functions of bridge bearings. One is to effectively load the bridge load (dynamic load and static load) The second is to overcome the beam body bias caused by the displacement of the beam body due to braking force, ambient temperature, concrete shrinkage or creep, and load action. For example, in the lateral direction of the bridge body, if the side length of the beam body is long due to changes in the ambient temperature, while the distance between the pier columns remains unchanged, if the beam body and the pier columns are rigidly connected, the rigidly connected part may be It is sheared or the beam body generates a large shear force on the connecting part. The bridge supports make the beam body press as pos...

AI Technical Summary

Problems solved by technology

Once the friction support as an important node in the structure fails, it will lead to changes in the force transmission path of the structure, which will have an adverse effect on the seismic performance of other parts and further aggravate the earthquake damage of the structure

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