The Pushover Analysis is a non-linear static analysis used to simulate the post-elastic behavior of the structure. The load is applied in increments, whilst the plastic behavior of the structure is modeled locally, via the plastic hinges applied at the ends of linear elements.
Ribbon: Results tab > Pushover Calculation available on the ribbon under Launch Calculation.
Launch Pushover calculation
Project Browser: click Analysis and select Pushover Calculation in the Calculation Sequence dialog box:
Calculation sequence - Pushover calculation
Note
By default, both the RC calculation and Steel calculation will be enabled.
Depending on the material and the type of the Plastic Hinges, there are certain results that need to be available, in order to be calculated. Thus, in some cases it is mandatory to perform the RC calculation or the Steel calculation.
If the Definition set to Auto Defined and the Cross-section class is set to auto class – the Steel calculation needs to be run (cross-section class is required for the computation of the plastic hinge). This is exemplified in the figure below:
Plastic hinges calculation - steel elements
If the Definition is set to Auto Defined and the Cross-section class is imposed – the Steel calculation is not necessary.
If the Definition is set to User Defined and the Yield Bending Moment and Yield Rotation are imposed, as shown in the figure below, – the Steel calculation is not necessary, even if the Cross-section class is set to auto class.
Plastic hinges calculation - steel elements
If the Definition is set to User Defined and the Yield Bending Moment and Yield Rotation are set to be computed by the software – the Steel calculation needs to be run.
If the Definition is set to Auto Defined and the Plastic Hinge is defined along the X direction – the Steel calculation needs to be run (N_cr is required for the computation of the plastic hinge). This is exemplified in the figure below.
If the Plastic Hinge is defined along the X direction and the Yield Axial Force is custom defined – the Steel calculation is not necessary.
Plastic hinges calculation - steel elements
If the Definition is set to Auto Defined, the RC calculation needs be run with the Detailed rebar definition on beams and columns enabled from the Calculation Settings. The real reinforcement is required for the computation of the Yield Bending Moments, Yield Rotations and the Limit states/Acceptance criteria.
Plastic hinges calculation - reinforced concrete elements
If the Definition is set to User Defined, and the plastic hinge properties are imposed, the RC calculation is not necessary.