Assign Bridge Temperature Loads Form

Uniform temperature loads and defined temperature-gradient load patterns can be applied to bridge objects using the Assign Bridge Temperature Loads form. Appropriate thermal loads are developed for the linked model (spine [frame], shell, or solid models). Those loads also can be included in Load Combinations generated for AASHTO or JTG design codes.

Current Span drop-down list. Use this drop-down list to select the span to which the temperature load is being applied.
Load Patterns
- Add New Temperature Load button. Click this button to access the Bridge Temperature Load Assignment form and assign a uniform temperature change or temperature gradient to the Current Span.
- Modify/Show Temperature Load button.
- 1. Highlight a temperature load pattern in the Load Patterns display list.
  2. Click the Modify/Show Temperature Load button to access the Bridge Temperature Load Assignment form.
  3. Use that form to make the necessary revisions to the previously defined load pattern.
- Delete Temperature Load button.
- 1. Highlight a temperature load pattern in the Load Patterns display list.
  2. Click the Delete Temperature Load button to delete the selected load assignment.
Copy Loads
- Copy Loads from Current Span to Selected Other Spans button. Use this button to copy load patterns defined for a span to other spans in the model.
- 1. Set the Current Span drop-down list to the span with the load(s) to be copied (i.e., copy from this span).
  2. In the Other Spans display list, select the span to which the load will be copied (i.e., copy to this span).
  - - Copy Selected Load Only check box. When this check box is checked, the load pattern selected (i.e., highlighted) in the Load Patterns display list will be the only pattern copied from the span selected in Step 1 to the span selected in Step 2.
    - Delete All Other Loads (if any) On Specified Spans check box. When this check box is checked, any previously defined temperature load patterns will be deleted and replaced with the specified load pattern.
  1. Click the Copy Loads from Current Span to Selected Other Spans button to complete the copying of load patterns from one span to another.

Access the Assign Bridge Temperature Loads form as follows:

At a minimum, create a layout line and define a deck section.
Click the Bridge >Bridge Objects > Expand arrow command or on the Bridge Wizard select the Bridge Object Definition item and click the Define/Show Bridge Objects button, to display the Define Bridge Objects form.
- Alternatively, to bypass the Define Bridge Objects form, click the Bridge >Bridge Objects > New command, which will display the Bridge Object Data form identified in the next step.
Click the Add New Bridge Object button, or highlight a previously defined bridge object and click the Add Copy of Bridge Object or the Modify/Show Bridge Object button, to display the Bridge Object Data form.
In the Modify/Show Assignments display list, highlight the Temperature Load Assigns item and click the Modify/Show button to display the Assign Bridge Temperature Loads form.
- Alternatively, on the Bridge Wizard select the Temperature Loads item in the Bridge Object Assignments area and click the Assign/Show Temp. Loads button to access the Assign Bridge Temperature Loads form.