Reaction by Position Data

In the case of a bridge constructed by the ILM, the nodes, with the support conditions assigned to reflect the pier/buttress supports, change progressively as the construction stages proceed in the process of the launching operations. Reaction by Position Data enables us to check the changes of support reactions at various pier support positions with the progress of construction stages. Relevant pier locations are specified to check the changing reactions. If the ILM Wizard is used the support points are auto-generated. The information on the reaction points entered by this feature is applied to Results > ILM Reactions > Reaction by Position.

From the Main Menu select Results > Bridge > Camber/Reaction > ILM Reactions > Reaction by Position Data.

To enter or add the information on the reaction points, click the button and enter the following: To modify the entered information, select the relevant entry and Click the button. To delete the information, select the relevant entries and click the button.

Name

Enter the reaction point information. You may find it convenient if the Name explicates the locations of piers and buttresses.

Note
The use of the ILM Wizard automatically assigns the following names for the reaction points

Constrained degrees of freedom: Support 1, Support 2, ... Translational Y& Z and rotational MX are constrained. Translational X is constrained only at the location of braking saddle.

Elastic spring supports: Spring Support 1, Spring Support 2, ...

The sequential numbers at the ends are automatically assigned in an ascending order in the GCS X-axis and Z-axis coordinates.

Description

A brief description may be provided.

Reaction Position Table

The node numbers corresponding to the defined piers and buttresses for each construction stage are entered.

Stage: Construction stage name

Node: Node number of reaction point for the corresponding construction stage