Fire Safety Assessment of Underground Buildings based on Grey Relational Analysis

In order to investigate the fire safety of buildings underground, the fire influencing factors of underground buildings were analyzed and based on which established the assessment index system including four main factors (fire-proof capacities, fire-fighting capacities etc.). By analyzing the grey relational grades between each comparative sequence based on index system and the reference sequence, the safety levels of each factor and the system as a whole were obtained according to the grey incidence matrix. A case study of an underground parking of Beijing Union Medical College Hospital was conducted with this method. The results accorded well with the facts and provided a strong backup for updating the firefighting facilities and assessing the fire safety. The case study also proved the method itself scientific, simple, and practical in the use of fire safety assessment of buildings underground.