Adjustable seismic mitigation and isolation support

The invention discloses an adjustable seismic mitigation and isolation support and belongs to the technical field of building seismic mitigation structures, adjacent steel plates can be rigidly connected by rotating connecting rings, different numbers of steel plates can be rigidly connected by rotating the different numbers of steel plates, and the length of a soft part of the seismic mitigation and isolation support is changed by connecting the different numbers of steel plates. The shock absorption and isolation effects of the shock absorption and isolation support are different through the soft parts with different lengths, after the shock absorption and isolation support is installed on a building supporting beam, the different shock response effects of the shock absorption and isolation support can be achieved by adjusting the rubber part capable of swinging, for example, in a low-shock area, a small number of soft movable parts can be reserved, and under the effect of guaranteeing the shock buffering s