The key to the research of progressive structural collapse is to perform an in-depth investigation into the structural collapse mechanism at the onset of structural component failure due to accidental events and the demand of progressive collapse resistance for the remaining substructures. According to existing research fndings, both beams and floors are important anti-progressive structural collapse components. However, the most common available methods for analyzing progressive collapse adopt the empirical coefcient assumption, which lacks the theoretical basis and neglects the contribution of floor resistance. (nhnhanh)