An antiperforation building panel structure, particularly made of sintered expanded polystyrene (eps), includes a composite complex structure having embedded, in the sintered expanded polymeric mass, preferably of the high density type, a steel box-shaped structure with larger faces divided into first fields having larger openings therein and second fields having smaller fissures therein, the first and the second fields being arranged in positions that are inversely symmetric on the two faces, so that each first field on one face corresponds to a second field on the other face and vice versa.