RESUMENPara un rango de valores de área de armadura activa y de excentricidad que cumplen los requisitos de tensión impuestos por el estado límite de servicio, se evalúa la armadura pasiva necesaria en estado límite último mediante la técnica RSD (Reinforcement Sizing Diagrams) teniendo en cuenta la presencia de la armadura activa. Se selecciona la solución que conduce a un valor mínimo del coste total de armado pasivo y activo.
The assessment of the state of railway bridges in Europe requires large efforts in terms of both time and resources, which have increased since the creation of the Trans-European Transport Network (TEN).The aim of this study is to provide a number of complementary tools which allow a quick analysis of the condition state of railway bridges (including nowcasting and forecasting) where higher loads and speeds can be simulated without the need of complex simulation models. These tools aim at supporting the decision-making process of infrastructure managers. The work is divided into two main sections: Empirical Green Functions and Fragility curves.
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