This study aims to develop a practical methodology based on Eigenfunction Expansion Method (EEM) to assess the effects of simultaneous action of vertical earthquake excitation and moving vehicle loads in singlespan and multi-span simply supported bridges. While the effects of vertical earthquake ground motions are For the same maximum deflection limits, application of pipe dampers could reduce (up to 50%) the required flexural rigidity of the bridge, and therefore, lead to a more economic design solution with lower structural weight.
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