Abstract
Steel railway bridges built throughout the twentieth century represent a very important asset in the railway lines of the entire European network. These bridges, despite their advanced age, continue to be part of passenger and freight transport networks, that provide transport to a large part of society. Given their advanced age, these structures are prone to present higher levels of deterioration in spite of the maintenance tasks that are carried out.The appearance of pathologies in the wheel-rail contact suppose an alteration in the dynamic behavior of the via-vehicle system. This fact gains importance when they appear in bridges, increasing the number of cycles undergone by the structure, breaking down structural elements.In this paper, the structural dynamic behavior of a metallic bridge with the presence of different pathologies is studied. The study is focused on a metal bridge built during the first half of the twentieth century currently in service. The aim of the article is to evaluate the influence of these elements on the remaining life to fatigue that they present.
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