Comparing the Progressive Collapse Resistance Capacities of Steel Ordinary and Intermediate Moment Frames Considering Different Connection Details

Abstract: This study compares the progressive collapse resistance of Steel Ordinary Moment Frames (OMFs) and Intermediate Moment Frames (IMFs) under various connection details. Using nonlinear static and dynamic analyses, the performance of different frame types is evaluated following sudden column removal scenarios. Results show that IMFs generally exhibit greater resistance due to enhanced ductility and energy dissipation capacity. Connection detailing significantly influences collapse behavior, highlighting the critical role of connection design in improving structural resilience against progressive collapse.