Spherical steel support

The utility model relates to a spherical steel support which is arranged between a bridge body and a bridge pier of a bridge and comprises an upper support plate, a lower support plate and a spherical crown lining plate, the spherical crown lining plate can be arranged between the upper support plate and the lower support plate in a sliding mode, and a blocking mechanism is arranged on the upper support plate. The blocking piece in the blocking mechanism is located on the sliding path of the spherical crown lining plate, when the upper structure of the bridge slides relative to the support due to external strong force damage, the blocking piece can effectively block the spherical crown lining plate from further moving, and therefore the spherical crown lining plate is prevented from being separated from the support and the pier. Besides, due to the fact that the blocking mechanism is provided with the sensing piece capable of sensing movement of the blocking piece, when the blocking piece moves due to blockin