Beam-falling-preventing gradient function damping device for simply-supported T-shaped beam of railway

The invention discloses an anti-beam-falling gradient function damping device for a simply-supported T-beam of a railway. An anti-seismic block of a railway bridge in an earthquake-prone area continuously collides with the upper portion of the bridge, and the anti-seismic block is damaged. The device comprises a box body structure which sleeves the periphery of an anti-seismic stop block; a multi-gradient corrugated sandwich structure is arranged between the box body plate and the bridge superstructure and comprises a multi-gradient corrugated sandwich plate and two flexible energy absorption blocks, and the corrugated sandwich plate and the energy absorption blocks are connected through springs; an outer plate is arranged on the outer side of the multi-gradient corrugated sandwich structure and connected with the energy absorption blocks through bolts. And a strip-shaped slotted hole is formed in the outer plate. The corrugated plates distributed in the gradient shape can achieve graded energy consumption in