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Model description

A two-span (10m each), continuous girder with solid cross section (0.1m by 0.6m) is modeled three times using frame, shell, and solid objects, as shown in Figure 1. The system is subjected to a unit moving load which travels the length of the structure. Section cuts are defined through the midspan of the second span. Section-cut forces are evaluated through influence-based moving-load analysis, which is run both with and without saving section cut forces.

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Figure 1 - Structural model

Discussion of results

To obtain section-cut forces for solid and link objects, the option to save section cuts must be selected under Moving Load Case Results Saved.

  • When analysis is requested while saving section cuts during moving-load analysis, then section cuts which are either defined prior to analysis or defined or drawn after analysis produce correct values.
  • When analysis is not requested while saving section cuts during moving-load analysis, section cuts for solid and link objects will produce zero results, and section cuts for frame and shell objects produce correct values.


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