Abstract
In the present work an in-depth analysis of the structural demand induced by several configurations of exceptional road transports has been carried out with the aim to quantify bending moment and shear demands over different geometrical layouts of simply-supported girder bridge decks and compare them with those deriving by the application of the traffic load models in force at the time of the design. On such bases, a structural demand coefficient has been computed in analogy to the Level 3 assessment suggested by the new Italian Guidelines for assessing the Risk of existing bridges. In this way, this structural demand index can be easily used by infrastructure owners for a fast assessment of the effects of exceptional road transport configurations potentially travelling over a bridge on its structural elements, if compared to the load models originally considered for its design, thus making possible a preliminary screening on the transitability of the infrastructure and the identification of potential road network bottlenecks.
Published Version
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