Check the static and seismic strength of a bridge within the scope of increasing its hoisting capacity to 6,3 tons.

Context: Existing bridge crane (Bugey and Chinon centrals), designed to withstand static load of 5 tons.

Main operations

  • Modal analysis: using ANSYS, estimation of the resonant frequencies in Hz and participating masses.
  • Seismic calculation (spectrum analysis type) with CQC recombination.
  • Analysis of the mechanical stress and postprocessing with the permissible values of RCC-M.
  • Calculation of the maximum movements, accelerations and speeds.
  • Calculation of the reaction efforts at the anchor locations.

Tool: Ansys