Single Elements

This section defines temporary support elements for segmental construction of the Concrete U Girders.

Navigation: Superstructure > Temporary Support > Single Element

Steps

Step 1: Understand Temporary Support Purpose

When constructing Concrete U Girders over a span, construction is executed in a segmental manner due to transportation constraints. Stability issues arise during this process, requiring temporary supports at specific points.

Step 2: Navigate to Single Element

Navigate to Temporary Support > Single Element in the tree view.

Navigation

Step 3: Select Girder

Click on the Girders column and select CUG1 from the dropdown.

Step 4: Pick Support Locations

Click Pick from the dropdown to select temporary support locations graphically.

Pick Locations

Enter the name as TSupL1 for the first support.

Step 5: Create Supports for Both Girders

The temporary support locations for CUG1 also apply to CUG2 since they are built identically as segmental girders.

Both Girders

Temporary supports are also used during closure pour casting operations of the girders.

Step 6: Define Additional Supports for Fixity Changes

Temporary Supports 3, 5, 7, and 9 have fixity states that change during construction. These supports are redefined to accommodate the changes (explained in detail on the Construction Stages page).

Additional Supports

Step 7: Configure Fixity Values

Navigate to the Fixity spreadsheet.

Fixity Tab

Enter the fixity values for each temporary support as shown. The fixity pattern varies based on whether the support needs to resist axial forces during specific construction stages.

Verification

After completing these steps, the temporary supports are defined and ready for use in construction stage definitions.