Safety risk assessment of reinforced concrete beams after fire based on combined weight
This paper provides a systematic evaluation system for assessing the safety risks of structures following a fire,serving as a foundation for devising a subsequent reinforcement scheme.By considering material properties,effects of fire exposure,and geometric factors of concrete beams,six evaluation indicators are identified:concrete strength,color of concrete surface,maximum temperature,duration of exposure to fire,presence of cracks and extent of concrete shedding,is established considering concrete material,fire effect and component dimensions.The safety risk assessment model for post-fire concrete beams is developed,utilizing a combination of weighted averages and fuzzy set theory.The model was subsequently applied into the safety assessment of a plant,and the contrastive analysis on assessment results by the model and"Standard for identification of building structures after fire",respectively.The results indicate that the calculated damage level by the model are accordance with the those determined by established standards.It reveals the model can evaluate the safety risk of reinforced concrete beams after fire comprehensively and scientifically.
firesecurity risk assessmentcombination weightsfuzzy theoryreinforced concrete of beam
万方数据
维普
