Assessment Of Load Carrying Capacity Of Arch Bridge Case Study On Odie Bridge

Arch bridges possess an enormous capacity that can carry larger load than assessed through rnthe application of limit state analysis and experimental methods. In the case of arch rnbridges, accessing detailed information of the structure is a bit difficult. rnIn this study, load carrying capacity of Odie bridge, which is non-reinforced concrete arch rnbridge found in Ethiopia Federal Road Network, is carried out. Nonlinear finite element rnanalysis was adopted using the total strain crack model in Midas FEA. Arch Bridge can rnmanage load even with the formation of hinges. The study is focused on identification of rnthe formation of cracks in arch barrel due to its own weight and vehicular loads applied at rnthe quarter and crown point of the arch. Moreover, an influence surface along the top rnsurface of the bridge was generated. Using the influence surface, the vehicular axle load rnpositions were identified. Crack formation and stress in the arch due to a moving load is rncaptured. rnTo validate the numerical model, verification on Prestwood Bridge was used. The study rnrevealed that the comparison between the numerical model and the full-scale test of rnPrestwood Bridge is applicable to estimate load carrying capacity of non-reinforced rnconcrete arch bridges.

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