Two-level Variable fuzzy assessment of fire safety in high-rise buildings
Yunfen Liu · Journal of Safety Science and Technology · 2012
With the rapid development of economy in China,more and more complex-structured and high-occupied high-rise buildings are built,Because of the special structure form of high-rise buildings,the fire of them is quite different from the common buildings,therefore,the assessment method analysis of fire safety in high-rise buildings is also a popular direction in the fire safety engineering.In this paper,a new fuzzy set model for assessing the fire safety in high-rise buildings based on variable fuzzy set theory was established.The model was two-level variable fuzzy assessment model.Taking the fire safety assessment of a certain high-rise building for example,the fire risk grades were calculated by the two-level variable fuzzy assessment model,and the result was compared with other fuzzy evolution methods.At last,revaluation of the fire safety in high-rise buildings was proposed by modifying the weight of evaluation target.The results showed that the proposed method is effective in practice and the assessment results are less dependent of the weight of evaluation target.The relativity of membership degree is considered in the model,it has universal applicability and the results became scientific,so it can be applied to evaluate complex problem in other field.