Reduction Moment at the Inner Support
Reduce the bending moment at an interior support of a continuous bridge. The equation of the moment is as shown below. But shall not be less than
But shall not be less than 
Where
: Design bending moment at the interior support
: Bending moment at the interior support
: Reaction at the interior support
: Dispersal width of reaction through a girder at the level of the centroid of the girder.
Design bending moment at the interior support
From the Main Menu select Results > Detail > Beam/Element > Reduction Moment
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Select the load cases for which moment at the interior support is reduced. Select the girder group in which the girders with the interior supports are included. A group can be defined by clicking Distribution width for reduction Enter the dispersal width, a. Auto Calculated by the program. User input User directly enters the dispersal width. Node list Enter node numbers corresponding to the interior supports. The node list can be entered by selecting the nodes in the model view or typing the node numbers. Add/replace or delete a set of the dispersal widths and associated nodes. |
and creating a Structure Group.