Bridge Abutment Data Form

Abutment properties specify the support conditions at the ends of the bridge. Abutment properties are used in abutment assignments to the bridge object. The abutment property allows specification of the connection between the abutment and the girders as either integral or connected to the bottom of the girders only. The abutment property also allows the abutment substructure to be specified as a series of point springs (one for each girder) or a continuously supported beam.

Use the Bridge Abutment Data form to define the bridge abutment for your model.

Bridge Abutment Name edit box. Use the default or enter a new name for the abutment definition.
Units drop-down list. Use the displayed units or select new units from the drop-down list.
Girder Support Condition options.
- Integral option. When this option is selected, the girder support is integral to the abutment.
- Connect to Girder Bottom Only option. When this option is selected, the abutment connects to the girder bottom only.
Substructure Type options.
- Foundation Spring option. When this option is selected, the abutment support is a foundation spring.
- Continuous Beam (Continuously Supported)
- - Section Property drop-down list. Select a frame section property for the grade beam, or click the plus symbol (+) preceding the drop-down list to access the Frame Properties form to define a new section property or review/revise an existing property definition.
  - Beam Length edit box. Use the edit box to specify the length of the grade beam.
Foundation Spring
- Foundation Spring Property drop-down list. Select a frame section property, or click the plus symbol (+) preceding the drop-down list to access the Frame Properties form to define a new section property or review/revise an existing property definition.
- - If the Substructure Type is Foundation Spring, specify if the spring is fixed or pinned.
  - If the Substructure Type is Continuous Beam, specify a line spring property definition.