基于AHP-熵权法的渡槽健康状态模糊综合评价研究

发布时间：2019-07-05 14:33

【摘要】：由于规划设计、施工质量、自然老化和运行管理等方面的原因，我国早期修建的渡槽，很多已经进入了病险期，出现了不同程度的老化病害问题，，渡槽健康状态随时间逐年下降，既存在安全隐患，又不利于延长渡槽使用寿命和发挥渡槽的工程效益。因此，应用科学合理的评价方法对渡槽健康状态进行客观而准确的评价，并在此基础上针对不同健康状态的渡槽进行科学合理的维护、管理和改造，已成为当前和今后一段时间内渡槽建设和管理中一项亟待解决的问题。本文讨论了渡槽健康状态评价的研究现状和与渡槽结构类似的桥梁健康状态评价方法，提出在借鉴桥梁结构评价研究成果的基础上，结合渡槽结构自身的特点，采用基于AHP-熵权法的模糊综合评价方法对渡槽健康状态进行评价。本文主要开展了以下几个方面的工作：首先，从研究影响渡槽“健康”的老化病害问题着手，对渡槽老化病害主要表现形式进行了归纳总结，并系统地分析了渡槽老化病害的形成原因。其次，论述了AHP-熵权法和模糊综合评价的基本原理以及在渡槽健康状态评价中的应用，为渡槽健康状态评价体系的建立打下了一定的基础。第三，应用前面论述的理论和方法，以梁式渡槽评价为例进行研究，将渡槽健康状态评价等级划分为五类，建立了渡槽健康状态综合评价模型，并采用AHP-熵权法计算了各层指标的权重。然后结合现有资料及相关规范，确定了渡槽部件等级参考评定标准，提出了确定底层评价指标隶属度的方法。在此基础上，论述了渡槽健康状态多级模糊综合评价的具体过程。最后，以湖南省内某渡槽为工程实例，采用本文提出的基于AHP-熵权法的模糊综合评价方法，对其健康状态进行综合评价，结果表明该综合评价方法是合理的、可行的。
[Abstract]:Due to the reasons of planning and design, construction quality, natural aging and operation management, in the early construction of the aqueduct in our country, many have entered the disease risk period, and the problem of aging disease of different degrees has occurred, and the health status of the aqueduct decreases year by year, which is not only a potential safety hazard, And the service life of the aqueduct is prolonged and the engineering benefit of the aqueduct is realized. Therefore, the scientific and reasonable evaluation method is applied to the objective and accurate evaluation of the health status of the aqueduct, and the scientific and reasonable maintenance, management and transformation of the aqueduct with different health conditions are carried out on the basis of the evaluation method, It has become an urgent problem to be solved in the construction and management of the aqueduct in the current and future period. In this paper, the research status of the evaluation of the health status of the aqueduct and the method of evaluating the health status of the bridge similar to the aqueduct structure are discussed. A fuzzy comprehensive evaluation method based on AHP-entropy method is used to evaluate the health status of aqueduct The price is mainly carried out in the following aspects: First, from the study of the problem of aging of the "health" of the aqueduct, the main manifestations of the aging disease of the aqueduct are summarized, and the shape of the aging disease of the aqueduct is analyzed systematically. In this paper, the basic principle of the AHP-entropy and the fuzzy comprehensive evaluation and the application of the evaluation of the health status of the aqueduct are discussed, and the establishment of the evaluation system for the health status of the aqueduct is laid. Based on the theory and method discussed above, the evaluation of the health status of the aqueduct is divided into five categories, and the comprehensive evaluation model of the health status of the aqueduct is established, and the AHP-entropy method is used to calculate the health status of the aqueduct. The weight of the index of each layer is determined. Then, based on the existing data and related specifications, the grade reference evaluation standard of the aqueduct component is determined, and the evaluation of the bottom layer is put forward. On the basis of this, the multi-level fuzzy synthesis of the health status of the aqueduct is discussed. In the end, a fuzzy comprehensive evaluation method based on the AHP-entropy method, which is based on the AHP-entropy method, is adopted to evaluate the health status of an aqueduct in Hunan Province. The results show that the comprehensive evaluation method
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV672.3

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