Electrical fire risk assessment method based on improved balance weight and variable fuzzy set

Abstract

The invention provides an electrical fire risk assessment method based on an improved equilibrium weight and a variable fuzzy set, and the method comprises the steps: building a high-rise building electrical fire risk assessment system, and determining an index constant weight coefficient of the assessment system through employing a fuzzy analytic hierarchy process, introducing a variable weight comprehensive theory based on an equilibrium function, and improving the variable weight comprehensive principle by combining electrical fire characteristics of a high-rise building, so that an evaluation system index variable weight coefficient under a certain index score is obtained; obtaining a comprehensive evaluation vector of the dynamic high-rise building electrical fire risk assessment system by combining a dynamic variable weight coefficient and a variable fuzzy set theory, and converting the comprehensive evaluation vector into a risk score and a corresponding risk level based on a characteristic value level judgment criterion. According to the method, the balanced variable weight formula is improved by combining the characteristics of the fire source of the electrical system, and the variable fuzzy set theory is innovatively applied to the electrical fire risk assessment of the high-rise building, so that the method has the advantages of high accuracy, high objectivity and the like.

Description

technical field [0001] The invention relates to the field of building risk assessment, in particular to an electrical fire risk assessment method based on improved balanced weights and variable fuzzy sets. Background technique [0002] With the continuous acceleration of urbanization in our country, the number of high-rise buildings is also increasing rapidly. The functions of high-rise buildings are complex, the degree of electrification is high, and the danger of fire is far greater than that of ordinary fire. The statistics of high-rise building fires in the past ten years have shown that electrical factors have become the main cause of high-rise building fires. However, the existing high-rise building fire assessment systems often only consider building fire protection design, and do not establish a scientific and systematic assessment based on the characteristics of electrical fires. system. [0003] At present, there are some deficiencies in the evaluation methods of...

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Problems solved by technology

[0003] At present, there are some deficiencies in the evaluation methods of high-rise buildings: on the one hand, most of the determination of evaluation index weights use AHP and fuzzy AHP

The weight coefficients obtained by these methods are greatly affected by subjective factors, and they are fixed weights. In real life, fire accidents will often be caused when the smaller influencing factors are more serious; on the other hand, the existing gray relational degree method, fuzzy The fire risk assessment methods such as mathematical method and unascertained comprehensive evaluation model have the problems of poor applicability of membership function, poor adjustability and unclear judgment results.

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