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Dynamic Behavior of Tied-Arch Bridges under the Action of Moving Loads

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  • Paolo Lonetti
  • Arturo Pascuzzo
  • Alessandro Davanzo

Abstract

The dynamic behavior of tied-arch bridges under the action of moving load is investigated. The main aim of the paper is to quantify, numerically, dynamic amplification factors of typical kinematic and stress design variables by means of a parametric study developed in terms of the structural characteristics of the bridge and moving loads. The basic formulation is developed by using a finite element approach, in which refined schematization is adopted to analyze the interaction between the bridge structure and moving loads. Moreover, in order to evaluate, numerically, the influence of coupling effects between bridge deformations and moving loads, the analysis focuses attention on usually neglected nonstandard terms in the inertial forces concerning both centripetal acceleration and Coriolis acceleration. Sensitivity analyses are proposed in terms of dynamic impact factors, in which the effects produced by the external mass of the moving system on the dynamic bridge behavior are evaluated.

Suggested Citation

  • Paolo Lonetti & Arturo Pascuzzo & Alessandro Davanzo, 2016. "Dynamic Behavior of Tied-Arch Bridges under the Action of Moving Loads," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-17, June.
    • Handle: RePEc:hin:jnlmpe:2749720
    DOI: 10.1155/2016/2749720
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