Anti-explosion and anti-impact protection device for helmet-imitated building structure

The invention discloses an anti-explosion and anti-impact protection device for a helmet-imitated building structure. The device comprises a shell, a lining layer, a buffer layer and a bottom plate. The shell is of an egg-box-shaped shell structure and is made of a fiber reinforced composite material, and plastic deformation of the shell in the pressing process can absorb more impact energy, so that the anti-explosion and anti-impact protection performance of the structure is improved; the lining layer is a polyurea coating, and the polyurea coating coated on the explosion-back surface of the shell consumes part of impact energy through tensile deformation and can prevent fragments from splashing, so that secondary damage of the fragments to a human body or a structure is reduced; and the buffer layer is made of a foam concrete porous material for buffering and absorbing energy. The foam concrete material can absorb more energy in the process of crushing layer by layer under pressure, and the phenomenon of st