This paper presents a quick novel approach for analysing bridges. The approach uses finite element modelling, in Excel VBA, whereby bridge and train data is inputted directly into the VBA code; thus, allowing the user to analyse multiple bridges in a single execution. To keep the analysis simple, the train is represented by a series of moving forces; hence, the train inertia effects are ignored. The assessment tool moves the point forces at finite intervals along the bridge to determine the maximum internal forces in the bridge from a particular train configuration. These internal forces are then compared with the bridge capacity to determine an ultization factor for the bridge, completing the Level 0 Bridge Assessment.

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A Quick Novel Approach for Analysing an Aging Infrastructure

  • Cathal Bowe,
  • Stephen Bateson

摘要

This paper presents a quick novel approach for analysing bridges. The approach uses finite element modelling, in Excel VBA, whereby bridge and train data is inputted directly into the VBA code; thus, allowing the user to analyse multiple bridges in a single execution. To keep the analysis simple, the train is represented by a series of moving forces; hence, the train inertia effects are ignored. The assessment tool moves the point forces at finite intervals along the bridge to determine the maximum internal forces in the bridge from a particular train configuration. These internal forces are then compared with the bridge capacity to determine an ultization factor for the bridge, completing the Level 0 Bridge Assessment.