6.13 Imposed Line Displacements

An imposed line displacement is the displacement of a supported line due to, for example, a foundation settlement.

The number of the load is automatically assigned in the New Imposed Line Displacement dialog box and can also be changed there.

In this text box, define the numbers of the lines on which the imposed displacement acts. You can also select them graphically by using .

If you have selected the graphical input by clicking the button, you have to enter the values of the Displacement or Rotation first. After clicking [OK], you can select the relevant lines one by one in the work window.

Imposed displacements refer to the global coordinate system XYZ. Three text boxes are provided for the displacement on the start node of the supported line.

If a displacement of the supported line does not act parallel to one of the global axes, its X, Y, and Z components must be determined.

In these text boxes, enter the displacement on the end node of the supported line.

To visualize the line orientation, use the Display navigator: Activate Model → Lines → Line Orientations in it (see Figure 4.26).

In the text box, you can specify an imposed rotation at the start of the line. It acts locally about the longitudinal axis x of the line.

In this text box, you can enter the imposed rotation at the end of the line.