The Research On Large Marketplace Fire Risk Assessment

In recent years, fire mishaps often occur in large marketplaces. Fire risk assessment for large marketplace could prevent and control efficiently the fire. Based on the analysis about fire assessment techniques over the world, fire risk assessment model on large marketplace are established, in which fuzzy synthetic assessment and fire simulation integrates. The assessment model could result in not only fire risk grade of large marketplace more reasonably but also smoke flowing of key points in case of fire.Aiming at the characteristics of large marketplace fire, referencing relative standards, and applying FTA, the multiple-levels index system of large marketplace fire risk assessment is established. The relative weight of the indexes is determined using Fuzzy Analytical Hierarchy Process (FAHP) for more scientific assignment of weights and show the importance of factors to fire risk well. This paper discusses the feasibility of the fuzzy synthetic assessment on risk of large marketplaces fire, and suggests that the fuzzy pattern recognition theory, in which the broad sense distance of weights is minimum, is used into the fuzzy synthetic assessment, and established the fuzzy synthetic assessment model. This model can construct the optimum subordinate degree of fuzzy information to make assessment result more accurate. In order to make index characteristic matrix more scientific, the quantification criteria are established according to output of FDS, and key points are confirmed by RAC, then several important indexes are evaluated based on simulation result of key points in large marketplace. And the method of synthesizing index value of key points is put forward.