基于物元模型的古建筑木结构健康诊断与安全评价研究

Study on Health Diagnosis and Safety Assessment of Ancient Wooden Structures Based on Matter-Element Model

古建筑木结构的健康诊断与安全评价对于古建筑维修与保护具有重要研究价值,为科学有效地评价木结构健康诊断状态,应用可拓集合理论将木结构健康状态、评价指标及其特征值作为物元,对评价标准及实测数据进行归一化后,得到模型经典域、节域、权系数及关联度,进而建立木结构健康诊断的物元模型,并合理应用到青城山黄帝殿安全评价中。研究表明:依据综合关联度评价分级,黄帝殿的震后结构健康状态为差,破坏等级为中等破坏,符合实际震后破坏状况,物元模型能够有效克服评价存在的主观性与信息屏蔽问题,为一种实用有效的古建筑木结构健康诊断评价方法。

The health diagnosis and evaluation of wooden structures of ancient buildings has important research value for the maintenance and protection of ancient buildings. In order to scientifically and effectively evaluate the health diagnosis state of wood structure, in this study, the extension set theory was used to take the health state, evaluation index and eigenvalue of wood structure as matter-element. After normalizing the evaluation standard and measured data, the classical domain, node domain, weight coefficient, and correlation degree of the model were obtained, and then the matter-element model of wood structure health diagnosis was established.Moreover, the safety evaluation of Huangdi hall in Qingcheng Mountain was reasonably applied. The results showed that according to the evaluation classification of comprehensive correlation degree, the structural health state of Qingcheng Mountain Huangdi hall after the earthquake was poor, and the damage level was medium damage, which was in line with the actual earthquake damage situation. The matter-element model can effectively overcome the subjectivity and information shielding problems in the evaluation, as well as a practical and effective wood structure health diagnosis and evaluation method.