基于改进灰色聚类的震损水库等级评价及除险加固顺序研究

震损水库的受损类型众多,涉及因素繁杂且相互关联性较强,如何在水库受损后快速定损,以便后续除险加固工作合理有序地开展是非常现实及迫切的问题。针对传统灰色聚类方法中白化权函数选取和聚类原则确定中存在的具体问题,利用新型混合三角白化权函数的思路,提出基于改进灰色聚类方法的震损水库分析评价方法,并将该方法具体应用于四川省震损水库的定损评价。分析评价结果表明,该方法结构简单,可快速有效的实现水库震损程度排序,从而确定震损水库的除险加固顺序及紧要工序。通过多种评价方法对比以及实际震损情况分析可知,改进的灰色聚类决策方法评价结论可靠,可较好的运用于震损水库分析评价领域,对防止地震次生灾害的发生具有重要意义。

Study on damage level and reinforcement sequence of earthquake-damaged reservoirs based on improved grey clustering

There are many damage types of earthquake-damaged reservoirs, involving complex factors with strong interconnections. It has become a very realistic and urgent problem as to how to determine the damage quickly after the earthquake, so that the follow-up work on reinforcement can be conducted reasonably and orderly. In view of the specific problems with the selection of whitening weight functions and determination of clustering principles, we adopted the new idea of mixed triangular whitening weight function, put forward a method to analyze and evaluate earthquake-damaged reservoirs based on improved grey clustering, and applied the method to earthquake-damaged reservoirs in Sichuan. Analysis and evaluation results showed that the method has a simple structure, is able to sort the reservoirs by damage level rapidly and effectively, and thereby determine the reinforcement sequence of the reservoirs as well as and the critical procedures. Through comparison of various evaluation methods and analysis of the actual seismic damage, it was drawn that the improved gray clustering method is reliable, and can be well used in the analysis and evaluation of earthquake-damaged reservoirs. It is of great significance for preventing earthquake secondary disasters.