混凝土坝健康模糊综合诊断方法研究

影响混凝土坝健康状况的因素众多,建立的混凝土坝健康综合诊断指标体系,既包含有定量指标,又包含有定性指标,同时,定性指标指标值的确定带有模糊性,并且混凝土坝健康等级之间的界限也难以准确的界定。模糊综合诊断模型通过确定各个诊断指标的权重及其隶属度向量获得模糊评判矩阵,然后把模糊评判矩阵与诊断指标的权重集进行模糊运算并进行归一化,得到诊断指标健康值,确定被诊断对象的等级层次,最终对混凝土坝健康进行评价,工程实例计算结果表明:模糊综合诊断模型计算结果与实际运行情况相符。本文利用模糊综合诊断模型解决了大坝健康综合诊断指标体系中的模糊性问题。

The study on the concrete dam health comprehensive diagnosis based on fuzzy theory

Because the factors affecting the health of the concrete dam are various, Concrete Dam Health Comprehensive Diagnosis index system contains both quantitative indexes and qualitative indexes. Mean-while, the qualitative index value is determined with fuzziness and the boundaries among concrete dam healthy levels are difficult to accurately define. Therefore, it can take advantage of fuzzy comprehensive di-agnostic model to diagnose the concrete dam health. By determining the weight and subordinated degree vec-tor of each diagnostic index, fuzzy judgment matrix was established. And according to the normalized fuzzy calculation of fuzzy judgment matrix and the weight set of diagnostic indexes, fuzzy comprehensive diagnos-tic results were obtained, which was the basis to determine the healthy level of dam being diagnosed. The calculation results of engineering example show that fuzzy diagnosis model calculation results are in confor-mity with the dam actual operation. Fuzzy comprehensive diagnosis model solved the fuzzy problem in dam health comprehensive diagnosis index system.