The Study Of The Fire Risk Assessment Of Building

The factors such as connection, arrangement and multi-purpose having effect on the building fire which are very complicated actually play different roles in different periods of fire. And fuzzy math can solve these problems well. The main present means used in the building fire safety assessment were stated fully and clearly, including their detailed characteristics and the range of application. Fuzzy Synthetic Evaluation can be more effective to solve the complicacy of the fire risk assessment than other methods. So we can get such a conclusion that Fuzzy Synthetic Evaluation can be applied well in the building fire risk assessment. The method of the Fuzzy Synthetic Evaluation was studied further in this paper. By using the Fuzzy Math theory and fixing the quantity of fuzzy factors, the plan of excellent-choice can be established on the basis of quantity comparison. The main steps of fuzzy synthetic evaluation are as follows: (1) make certain factor aggregation. (2) make certain the rank of evaluation. (3) the evaluation of single factor. These are the foundation of multi factor and multi-level evaluation. The fuzzy relation matrix and the weight matrix are important in the Fuzzy Synthetic Evaluation.This paper utilizes fuzzy mathematics theory and Fuzzy Synthetic Evaluation into the building fire risk assessment. According to the different periods of fire, the assessment model is set up respectively, containing the model when fire starts, the model when fire reports automatically, the model when fire stops automatically and the model when fire fighters stop it. The models can be used to assess the loss of property and damage of building. And the model to evacuate people safely in the building is finally made certain, which can be used to assess the risk people experienced in the building. By using the research done by experts as a reference, this paper sets up five-independent multi-level assessment element system of fire risk assessment of building and utilizes improved AHP to determine the weight of assessment element, which makes the weight more scientific and reasonable and better reflects the importance of various elements in building safety. The article evaluates fire risks in a department-store of Xi'an and prove the feasibility of the method, which is also identical with...