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This tutorial was initially written for [SAP2000|sap2000:home], though the general procedure applies to [CSiBridge|csibridge:home].
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An overview of the procedure for *pushover analysis* is given as follows:
h1. Create the computational model
* Create the computational model, without pushover data, using conventional [modeling|kb:Modeling techniques] techniques.
* Define properties for pushover [hinges|kb:Hinge] using Define > Section Properties > Hinge Properties. Hinges may be defined manually or by using one of several default specifications which are available.
* Assign the pushover hinges to selected [frame|kb:Frame] objects using Assign > Frame > Hinges.
* Select Define > Load Patterns to define [load patterns|kb:Load pattern] which will contain the loads applied during pushover analysis.
h1. Define a nonlinear static load case
* Select Define > Load Cases > Add New Load Case to define a [nonlinear|kb:Nonlinear] static [load case|kb:load case] which will apply the previously-defined load pattern. This load case may be force-controlled (pushed to a specified force level) or displacement-controlled (pushed to a specified displacement).
* Select Other Parameters > Results Saved to Multiple States such that various parameters may be plotted for each increment of applied loading.
h1. Run the analysis
* Select Analyze > Run Analysis to run the static-pushover analysis.
h1. Review results
* To plot base shear vs. monitored displacement, select Display > Show Static Pushover Curve. Additional variables are also available for plotting.
* To plot hinge deformation vs. applied loading, select Display > Show Hinge Results. Moment as a function of plastic rotation is one such option.
* To review displacement and the step-by-step sequence of hinge formation, select Display > Show Deformed Shape.
* To review member forces on a step-by-step basis, select Display > Show Forces/Stresses > Frames/Cables.
* Select Display > Show Plot Functions to plot response at each step of the pushover analysis, including joint displacement, frame member forces, etc.
h1. See Also
* {new-tab-link:http://www.csiberkeley.com/}CSI{new-tab-link} [_Analysis Reference Manual_|doc:CSI Analysis Reference Manual] (Nonlinear Static Analysis > Static Pushover Analysis, page 394)
* Habibullah, A., Pyle, S. (1998). [_Practical Three Dimensional Nonlinear Static Pushover Analysis_ |http://www.csiberkeley.com/support/technical-papers], Computers and Structures, Inc., Berkeley, CA
* CSI {new-tab-link:http://www.csiberkeley.com/support/watch-and-learn}Watch & Learn{new-tab-link} video series, [SAP2000|sap2000:home] Tutorial 21, Static Pushover Analysis
| Info |
|---|
This tutorial was initially written for SAP2000, though the general procedure also applies to CSiBridge. |
On this page:
An overview of the procedure for pushover analysis is given as follows:
Create the computational model
Create the computational model, without pushover data, using conventional modeling techniques.
Define properties for pushover hinges using Define > Section Properties > Hinge Properties. Hinges may be defined manually or by using one of several default specifications which are available.
Assign the pushover hinges to selected frame objects using Assign > Frame > Hinges.
Select Define > Load Patterns to define load patterns which will contain the loads applied during pushover analysis.
Define a nonlinear static load case
Select Define > Load Cases > Add New Load Case to define a nonlinear static Load case which will apply the previously-defined load pattern. This load case may be force-controlled (pushed to a specified force level) or displacement-controlled (pushed to a specified displacement).
Select Other Parameters > Results Saved to Multiple States such that various parameters may be plotted for each increment of applied loading.
Run the analysis
Select Analyze > Run Analysis to run the static-pushover analysis.
Review results
To plot base shear vs. monitored displacement, select Display > Show Static Pushover Curve. Additional variables are also available for plotting.
To plot hinge deformation vs. applied loading, select Display > Show Hinge Results. Moment as a function of plastic rotation is one such option.
To review displacement and the step-by-step sequence of hinge formation, select Display > Show Deformed Shape.
To review member forces on a step-by-step basis, select Display > Show Forces/Stresses > Frames/Cables.
Select Display > Show Plot Functions to plot response at each step of the pushover analysis, including joint displacement, frame member forces, etc.
See Also
CSI Analysis Reference Manual (Nonlinear Static Analysis > Static Pushover Analysis, page 394)
Habibullah, A., Pyle, S. (1998). Practical Three Dimensional Nonlinear Static Pushover Analysis , Computers and Structures, Inc., Berkeley, CA
CSI Watch & Learn video series, SAP2000 Tutorial 21, Static Pushover Analysis
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