Abstract: In order to objectively evaluate fire risk of civil buildings under construction, this paper developed a practical fire risk assessment model. First, the paper analyzed fire characteristics and disaster factors of civil buildings under construction, and developed a comprehensive fire risk evaluation system for civil buildings under construction. Then, the Analytic Hierarchy Process was applied to determine the weight of each level, the fuzzy comprehensive evaluation method was used to make a comprehensive evaluation, and then the fire risk assessment model for civil buildings under construction at different construction stages has been built. Finally, the model was applied to evaluate the risk of a civil building under construction and to guide the rectification of fire hazard. The fire risk before and after the rectification have been compared. The evaluation results showed that the top risk factor of civil buildings under construction was the management of usage of fire and electricity, which was consistent with the actual situation.

Key words: civil building under construction, fire risk assessment;analytic hierarchy process, fuzzy comprehensive evaluation method