Friction pendulum multistage seismic isolation support seat based on shear thickening fluid

The invention relates to a friction pendulum multistage seismic isolation support seat based on shear thickening fluid. The friction pendulum multistage seismic isolation support seat comprises an upper support seat plate and a lower support seat plate, wherein the upper support seat plate is fixedly connected with an upper structure, and the lower support seat plate is fixedly connected with a foundation; a hinged sliding block is welded to the lower part of the upper support seat plate and is in sliding fit connection with the sliding surface of the lower support seat plate; a lateral displacement energy consumption device is welded on the lower support seat plate; the lateral displacement energy consumption device is mainly composed of a cylinder body, a piston, a piston rod, the shear thickening fluid, a ring-shaped baffle and an upper cover; the lower support seat plate is fixedly connected with the cylinder body in a welding sealing mode, the annular piston is arranged in the cylinder body, and the spac