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Condition evaluation of existing reinforced concrete bridges using fuzzy based analytic hierarchy approach

机译：基于模糊层次分析法的既有钢筋混凝土桥梁状态评估

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摘要

There is an urgent need for a systematic methodology for condition assessment of the bridges because the old bridges of most of the countries are inadequate to carry current-day traffic and satisfy the present codal provisions and even in newer bridges, deterioration caused by unforeseen service condition and deferred maintenance is of great concern. In view of this, an attempt has been made in this study to develop a systematic procedure and formulations for condition evaluation of existing bridges using Analytic Hierarchy Process in a fuzzy environment. Analytic Hierarchy Process (AHP) is an efficient decision making tool for complicated problems with multiple evaluation criteria and uncertainty. Fuzzy logic approach has been used to take care of the uncertainties and imprecision in the bridge inspector's observations. In this paper, first, a methodology has been proposed for condition ranking of number of reinforced concrete (RC) bridges. Then, based on the results obtained from prioritization, rating of the most deserved bridge has been carried out using MADM based fuzzy logic. Computer programs have been developed based on the formulations presented in this paper for evaluating condition of existing bridges and the details are presented in the paper. The methodology and its application are demonstrated through a case study. This methodology would certainly help the engineers and policy makers concerned with bridge management to overcome the problem related to prioritization and decision on funding related to rehabilitation of bridges.
机译：迫切需要一种系统的方法来评估桥梁的状况，因为大多数国家的老桥梁不足以承载当今的交通量，无法满足目前的要求，甚至在较新的桥梁中，由于不可预见的使用条件而导致的恶化延期维护非常令人关注。有鉴于此，本研究尝试在模糊环境中开发用于分析现有桥梁状况的系统程序和公式。层次分析法（AHP）是具有多种评估标准和不确定性的复杂问题的有效决策工具。模糊逻辑方法已被用来照顾桥梁检查员观察中的不确定性和不精确性。在本文中，首先，提出了一种方法来对钢筋混凝土（RC）桥梁的数量进行状态排序。然后，基于优先级排序获得的结果，使用基于MADM的模糊逻辑对最应得的桥梁进行了评级。根据本文介绍的公式开发了计算机程序，用于评估现有桥梁的状况，并在本文中介绍了详细信息。通过案例研究证明了该方法及其应用。这种方法肯定会帮助与桥梁管理有关的工程师和政策制定者克服与桥梁修复的优先级和资金决定有关的问题。

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