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Priority ranking towards condition assessment of existing reinforced concrete bridges

机译：现有钢筋混凝土桥梁状态评估的优先等级

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摘要

Existing old bridges in most countries were designed for less traffic and are inadequate to carry current-day traffic and satisfy the present codal provisions. Even for newer bridges, deterioration caused by unforeseen service conditions and deferred maintenance is causing great concern to bridge engineers. Hence, there is an urgent need for a systematic methodology for priority ranking of the bridges for both their rehabilitation in the future and for the allocation of funding. In this paper, an Analytic Hierarchy Process (AHP), which is an efficient decision making tool for complicated problems with multiple evaluation criteria and uncertainty, has been proposed for the condition ranking of reinforced concrete (RC) bridges. Fuzzy logic is used to handle the subjective judgement, imprecision and intuition involved in a bridge inspector's evaluation report. This methodology would certainly help engineers and bridge management policy makers to overcome the problems related to prioritization and decisions on funding related to the rehabilitation of bridges. The background information, the formulation and the details of the computer program developed in this study for the condition ranking of bridges are presented in this paper. The methodology and its application are demonstrated through a case study.
机译：大多数国家/地区现有的旧桥设计用于减少交通量，不足以承载当前的交通量并满足当前的临时规定。即使对于较新的桥梁，由于不可预见的服务条件和延期的维护而导致的性能恶化也引起桥梁工程师的极大关注。因此，迫切需要一种系统的方法，对桥梁进行优先排序，以便将来进行修复和分配资金。本文针对钢筋混凝土桥梁的条件等级，提出了一种层次分析法（AHP），它是一种针对具有多个评估标准和不确定性的复杂问题的有效决策工具。模糊逻辑用于处理桥梁检查员评估报告中涉及的主观判断，不精确和直觉。这种方法肯定会帮助工程师和桥梁管理决策者克服与桥梁修复的优先级和资金决定有关的问题。本文介绍了本研究开发的用于桥梁状况分级的计算机程序的背景信息，公式和详细信息。通过案例研究证明了该方法及其应用。

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