Entering Load Using Formula

The wind load will be used to show how you can define global parameters and use them in formulas.

Defining Parameters

You can edit the global parameters using the button in the table's toolbar. For the wind load input, the velocity pressure qp, the force coefficient cf, and the solidity coefficient phi are relevant, and can be entered in the table.

02 Opening Dialog Box "Edit Global Parameters"

03 Editing Global Parameters

Using Parameters in Formula

Select the "Wind in +Y" load case and open a new load wizard "Member Load from Surface Load". The load acts in the Y direction.

For the wind load, for example, this would be qp * cf * phi.

04 Wind Load in +Y

05 Editing Formula

In the "Geometry" tab, you can select both side surfaces of the bridge one by one. After the confirmation, the new load is displayed.

Copying Loads

You can copy a load from one load case to another. To do this, open the "Load Cases and Combinations" dialog box. For example, you can use the button to specify that the load should be copied from the "Wind in +Y" load case into the existing "Wind in -Y" load case. You can edit the load by right-clicking the load wizard for the wind load in the -Y direction in the Navigator. It is then necessary to adjust the sign in the formula for the load size.

07 Copying Wind Load

The input of the loads and the definition of the load combinations are now complete, and you can continue with the analysis of the results.