Abstract
In the context of bridge management, three main types of maintenance actions can be considered. Maintenance actions can be taken preventively before the predefined limit condition is reached, or as a corrective measure in case those limits have been reached. The third possibility corresponds to the so‐called “doing nothing” scenario, in which no action is taken on the bridge. To be able to implement preventive maintenance, it is necessary to know the current condition of the bridge, as well as to be able to predict its performance. On the other hand, it is also important to be able to identify potentially threatening events that might occur in the analysis life period. This paper describes an integrated methodology to help bridge managers in defining an efficient maintenance program, considering the specific case of a railway bridge. The novelty of the methodology is focused on updating an existing methodology proposed by COST TU1406, by extending it to railway bridges and also by including the resilience analysis in case of a sudden event occurrence. The analysis considers a multi‐hazard future scenario, in which a flood event occurs while corrosion phenomena were already in place. The results show the feasibility of the proposed methodology as a support for the establishment of an efficient maintenance schedule to prevent bridge severe degradation, as well as to establish recovery plans in case of a sudden event.
Highlights
Asset Management (AM) is a multidisciplinary task that involves an extensive series of processes, such as those related to life cycle analysis, maintenance, risk analysis, and optimization [1, 2]
As an attempt to overcome some of these shortcomings, the present work proposes a bridge assessment methodology that combines four different key performance indicators (KPI): (i) reliability, (ii) safety of users, (iii) availability of the bridge, and (iv) costs associated with lifetime maintenance
Considering all the analyses presented in the previous sections, it can be concluded that, in the analyzed period of years, the safety KPI is the most relevant for the performance condition of the bridge. erefore, maintenance actions should be carefully considered to maintain proper safety to the users
Summary
Asset Management (AM) is a multidisciplinary task that involves an extensive series of processes, such as those related to life cycle analysis, maintenance, risk analysis, and optimization [1, 2]. Ese issues bring inspection and maintenance to the spotlight in which readjustments on budgets for inspection and conservation should be optimized by the administrations In this context, the first step is the evaluation of steel bridge condition. Additional works in the broader field of bridge management can be referred to, wherein predictive models, as well as proposals of life cycle management strategies and sustainability analysis, have been addressed [27–32]. As an attempt to overcome some of these shortcomings, the present work proposes a bridge assessment methodology that combines four different key performance indicators (KPI): (i) reliability, (ii) safety of users, (iii) availability of the bridge, and (iv) costs associated with lifetime maintenance. 2. Methodology is section describes a methodology for the assessment of existing bridges over their life cycle by combining the following different KPI: (i) reliability, (ii) safety, (iii) availability, and (iv) cost.
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