山东建筑大学学报2024，Vol.39Issue(2)：122-127,6.DOI:10.12077/sdjz.2024.02.017
基于组合权重的混凝土梁火灾后的安全评估
Safety risk assessment of reinforced concrete beams after fire based on combined weight
摘要
Abstract
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.关键词
火灾/安全风险评估/组合权重/模糊理论/钢筋混凝土梁Key words
fire/security risk assessment/combination weights/fuzzy theory/reinforced concrete of beam分类
资源环境引用本文复制引用
张玉稳,刘才玮,张鑫迪..基于组合权重的混凝土梁火灾后的安全评估[J].山东建筑大学学报,2024,39(2):122-127,6.基金项目
国家自然科学基金项目(52178487) （52178487）
山东省自然科学基金项目(ZR2021ME228) （ZR2021ME228）
中国博士后基金项目(2018M632640) （2018M632640）
山东省博士后创新项目(2019057) （2019057）
青岛市博士后应用研究资助项目(2018103) （2018103）
