基于结构解释模式的服役混凝土结构损伤识别

Damage identification in concrete structure based on interpretative structural model

混凝土损伤的影响因素较多,采用结构解释模式(interpretative structural model,ISM)的系统分析方法进行服役混凝土结构损伤识别研究,科学判定既有混凝土结构的损伤程度及基本影响因素。根据引起混凝土损伤的因素,确定各因素间的二元关系,并以此为基础,由要素间的关系传递性,建立基于结构解释模式(ISM)的混凝土结构损伤识别的构思模型,并提取骨架矩阵,形成递阶结构模型,经过比较反馈、修正学习,分析给出混凝土结构损伤识别的基本影响因素。研究结果表明:结构损伤多因素的二元关系是进行损伤识别的基础,综合考虑系统中引起损伤的各因素之间的关系,利用图论中关联矩阵原理分析混凝土结构损伤,给出的结构损伤影响因素更为直接有效;由损伤识别模型归结出的基本影响因素与现行结构检测规范的基本项目基本一致。

Because many factors account for concrete damage, the interpretative structural model （ISM） was used for concrete damage identification. It could determine the degree of the concrete damage and the basic factors of concrete damage scientifically. ISM of damage determination was formed based on two elements＇ relationship. According to the transmission relationship of the elements＇, the skeleton matrix system with hierarchical structure was got. By comparing and feedback, adjusting and learning, the main reasons of the structural damage were analyzed. The results show that the relation between two elements is the basis in damage identification for concrete structure. With the integral consideration of all the damage factors and the principle of association matrix in graph theory, the analysis results are direct and effective. The main concrete damage factors from the ISM agree with the basic items from structure inspection rules. 3 tabs, 3 figs, 10 refs.