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Steel I Girder - Additional Bearing Construction and Deconstruction
Follow the steps below to construct and deconstruct temporary bearings on a steel I-girder model.
This article walks through adding temporary bearings on the steel I-girder model shown below. Two extra supports are added at the 25 ft and 75 ft stations of the 100 ft girder. The construction is staged in three steps.
image-20250528-121938.png
Create the additional support lines.
Create additional insertion points on the new support lines. The insertion points could also be added to existing support lines using a longitudinal offset, but a new support line is usually easier to manage — it avoids confusion about which station an offset insertion point belongs to.
Include the new insertion points in the girder layout. This step aligns each insertion point's elevation with the bottom of the girder.
Define bearing fixity for the new insertion points.
Construct the bearings stage by stage under Bearing Construction.
Select the additional bearings to be removed under Bearing Deconstruction.
Animation of the resulting deformation across construction stages:
