SAP2000 V26 Nonlinear Pushover Analysis of Multistory RC Structures Considering Higher Modes

Including higher modes in the analysis allows for a more comprehensive understanding of the building's behavior during an earthquake. In some cases, particularly with tall buildings or those with irregular shapes, higher modes can significantly influence:

Force redistribution: The distribution of internal forces and deformations across the structure.
Collapse mechanisms: The sequence in which structural elements fail during a seismic event.
Seismic performance: More accurate predictions of how the building will perform under varying earthquake intensities.