Large-tonnage marine-corrosion-resistant metal metal-damping seismic mitigation and absorption steel support

The utility model discloses a large-tonnage marine-corrosion-resistant metal metal-damping seismic mitigation and absorption steel support. The large-tonnage marine-corrosion-resistant metal metal-damping seismic mitigation and absorption steel support comprises an upper support plate, a spherical crown liner plate and a lower support plate. The spherical crown liner plate is installed between the upper support plate and the lower support plate and is formed by an upper linear plate body and a lower liner plate body, a linear plate installation groove is formed in the lower support plate, the lower linear plate body is fixed into the linear plate installation groove, the top of the upper liner plate body is fixedly connected to the upper support plate, the outer side wall of the bottom of the upper linear plate body is in contact with the inner wall of the linear plate installation groove, the bottom face of the upper linear plate body is in sliding fit with the top face of the lower liner plate body, and the matched face is a spherical crown face. A beam-falling-preventing stop block fixedly connected to the upper support plate is arranged on the outer side of the upper linear plate body, one end of an anti-seismic stop block is fixed to the bottom face of the beam-falling-preventing stop block through a shear resisting bolt, the other end of the anti-seismic stop block is in contact with the outer wall of the upper liner plate body, and a gap is reserved between the outer wall of the upper liner plate body and the outer wall of the beam-falling-preventing stop block. A metal damper is installed between the portions, on the outer side of the beam-falling-preventing stop block, of the upper support plate and the lower support plate. When a seism occurs, the large-tonnage marine-corrosion-resistant metal metal-damping seismic mitigation and absorption steel support has a double-stage protection structure, a support body is prevented from being damaged, and beam falling is avoided.