Seismic demands for frames with strength & stiffness irregularities, based on MPA
Abstract
Modal Pushover Analysis (MPA) is becoming popular for seismic performance evaluation of steel structures. Given that MPA provides useful information on seismic demands imposed by ground motion on regular structures, the purpose of this paper is to evaluate the accuracy of MPA predictions using steel moment frame structures with strength and stiffness irregularities. Seismic demands obtained by MPA are compared with demands from rigorous nonlinear time history analysis. Cases are pointed out in which MPA provides adequate information, and conditions are identified under which MPA predictions are not reliable or may even be misleading.
Fields of Study & Subjects
Seismic Performance and Analysis
Seismic and Structural Analysis of Tall Buildings
Structural Response to Dynamic Loads
Publication details
- Journal / source
- CRC Press eBooks
- Pages
- 45–50
- Publication date
- 4 February 2026
- Language
- EN
- Document type
- Book chapter