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基于综合权重的火灾后混凝土损伤评估的正态云模型 预览

Normal cloud model of concrete damage assessment after fire disaster based on comprehensive weight
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摘要 针对火灾后混凝土损伤评价过程中定性概念的模糊性与随机性共存的特点,提出了基于正态云模型的评价方法,用于火灾后混凝土损伤评价。首先,建立了火灾后混凝土损伤评价指标体系,并确定了云模型的特征参数;其次,将火灾后混凝土损伤各评价指标基础数据输入正向正态云发生器,得出各评价指标的标准云图;最后,将各评价指标实测值输入正向正态云发生器,计算得到各评价指标实测值确定度,运用博弈论理论,将优序图法得到的主观权重与熵权法得到的客观权重组合为综合权重,根据确定度矩阵和权重矩阵计算出火灾后混凝土损伤的隶属度。通过实例计算表明,该方法与物元法、属性识别方法所取得的评价结果均保持一致,评价结果直观、合理,为火灾后混凝土损伤评价提供了新方法。 Aiming at the coexistence of fuzziness and randomness of qualitative concepts in the process of assessing concrete damage after fire,the assessment method based on normal cloud model is proposed,which is used to assess concrete damage after fire.Firstly,the assessment index system of concrete damage after fire was established,and the characteristic parameters of the cloud model were determined.Then,the basic data of each assessment index of concrete damage after fire was input into the forward normal cloud generator,and the standard cloud chart of each assessment index was obtained.Finally,the measured values of each assessment index were input into the forward normal cloud generator,and the certainty degree of the measured values of each evaluation index was calculated.By using game theory,the subjective weight obtained by superiority chart method and the objective weight obtained by the entropy weight method were combined into a comprehensive weight.The membership degree of concrete damage after fire was calculated according to the certainty degree matrix and weight matrix.Example calculation shows that the assessment results obtained by this method are consistent with those obtained by matter element method and attribute recognition method.The assessment results are intuitive and reasonable,which provides a new method for damage assessment of concrete after fire.
作者 汪建兵 高忠伟 陈雪莲 凌程建 肖承波 WANG Jianbing;GAO Zhongwei;CHEN Xuelian;LING Chengjian;XIAO Chengbo(Sichuan Institute of Building Research,Chengdu 610081,China;Institute of Earthquake Resistance and Disaster Reduction,Beijing University of Technology,Beijing 100124,China)
出处 《四川建筑科学研究》 2019年第3期10-15,共6页 Building Science Research of Sichuan
基金 “十二五”国家科技支撑计划资助项目(2013BAK01B03) 四川省优秀历史建筑保护与可持续利用技术研究(HXKX2014/014).
关键词 混凝土 云模型 火灾 损伤 评价 concrete cloud model fire disaster damage assessment
作者简介 汪建兵(1980-),男,高级工程师,主要从事建筑结构安全检测、鉴定等方面的技术服务及研究。E-mail:wjb_603@sohu.com.
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