Reliability of Single-Storey Substructures to Equivalently Investigate Behavior of Multi-Storey Frames

Abstract

Progressive collapse is a global failure in a multi-storey frame. All stories above the removed column will help to redistribute the loads initially resisted by the removed column together. However, due to time and cost saving, majority of existing experimental studies on progressive collapse is based on single-storey beam-column substructures. To date, how to use the results from single-storey substructures to equivalently investigate the behavior of multi-storey building is still unclear. Thus, for this purpose, in this study, a series of planar multi-storey RC beamcolumn substructures are modeled using high-fidelity finite element software LS-DYNA. The validated models were used to capture the difference of mobilization of load resisting mechanism in different stories.