基于云物元的混凝土坝裂缝危害性评价模型

针对数据的随机性和等级标准划分模糊的特点,建立了水工混凝土坝裂缝危害性评估的云物元模型,首先依据已有的指标体系和等级评价标准确定相应的云模型参数,采用AHP-熵权法计算评估指标的综合权重;然后以某重力坝为例,计算样本指标属于各评价等级的隶属度,依据最大隶属度原则确定裂缝对坝体结构影响的危害级别。最后将云物元模型与可变模糊模型进行比较,两种模型的评价等级相同,由此证明云物元模型合理、可行,为裂缝的危害性评价提供了一种新方法。

Evaluation Model of Fracture Hazard of Concrete Dam Based on Cloud Matter Element

Aiming at the randomness of the data and the fuzziness of the classification grade, cloud matter element model was established to evaluate the fracture hazard of concrete dam. Firstly, the parameters of the corresponding cloud model were determined according to the rating criteria. And the comprehensive weights of the evaluation indexes were calculated by AHP entropy method. By taking a gravity dam as an example, the membership degree of evaluation index was calculated, and the principle of maximum membership degree was used to determine the hazard grade of the dam body. Finally, compared with the results of the variable fuzzy evaluation method, the evaluation results of the two methods are the same. Thus, it shows that the proposed model is feasible and reasonable, which provides a new method for evaluation of the damage of concrete dam cracks.