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The information in this tutorial may be dated because it applies to SAP2000 V12.

 

Moment-curvature analysis may be performed within SAP2000 by using the Section Designer. Prestressing capabilities are available.

The moment-curvature analysis procedure for a Caltrans section is as follows:

  • Either create or open the model, then select Define > Materials > Add Material Quick to define material properties for the concrete, reinforcing-steel, and tendons which will be used.
  • Select Define > Section Properties > Frame Sections > Add New Property > Other > Section Designer, select the concrete base material, then click Section Designer to open the Section Designer.
  • In the Section Designer, select Draw > Caltrans > Round, then click on the grid to place the shape.
  • Right-click on the shape to adjust dimensioning and to set the rebar field to zero. Within the Prestress table, select Edit to input prestressing data, then select OK twice to exit both forms.
  • Select Draw > Solid Shape > Circle, then click on the grid away from the Caltrans section to place the shape.
  • Right-click on the shape, change the material to Opening, adjust the diameter, then locate the opening at the center of the Caltrans shape.
  • Select Display > Show Moment-Curvature Curve, then specify the bending angle and axial force to plot various moment-curvature curves.
  • Select Details to retrieve an output report.

 

Nonlinear section response may also be evaluated through pushover analysis.

See Also

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Related Email:

  • Email
    date12/10/2010
    subjectSection designer - modeling prestressed piles with square core
    fromok
    commentExplanation of how prestressed square piles with square core can be modeled in section designer
    toehs
    id6357648

Related Incident:

  • Incident
    no30498
    commentSection designer - modeling prestressed piles with square core
  • Incident
    no70000
    commentModel and example of how to model square prestressed concrete piles
{live-template:Tutorial} {{Tutorial | name = moment curvature analysis for hollow prestressed concrete piles | | description = description of moment curvature analysis for hollow prestressed concrete piles | | keyword = moment curvature; section designer; pile | | program = SAP2000 | | version = V12.0.1 | | status = done | | id = ok/moment curvature analysis for hollow prestressed concrete piles}} | SAP2000 can perform [kb:Moment curvature] analysis. This is done using the [Section Designer|kb:section designer] (SD) utility built into the program. We recommend using Version 12, since numerous improvements have been made over Version 11, especially for prestressed sections. The procedure is as follows for V12: * Create a new model or open an existing model. If you are only interested in the moment-curvature analysis, any model will do. * Define > Materials, and use the Add Material Quick button to define the Concrete, Rebar, and Tendon materials you will be using. * Define > Section Properties > Frame Sections * Add New Property > Other > Section Designer * Select the concrete base material, then click the Section Designer button * In SD (Section Designer), Draw > Caltrans > Round, then click on the grid to place the shape * Right-click on the shape, adjust dimensions, set the rebar to zero, click the Edit button for Prestress in the table, and fill out the data, OK, OK. * Draw > Solid Shape > Circle, and click on the grid to place the shape away from your Caltrans shape. * Right-click on the shape, change the material to OPENING, adjust the diameter, set the location to center on the Caltrans shape. * Display > Show Moment-Curvature curve, set the axial force (compression is negative) and bending angle to plot various moment-curvature curves. * Click the Details button to get a report. * There’s a lot here. Use F1 to get HELP. The developed section can be further used for [kb:Pushover analysis].