Modeling of RC Frame Buildings for Progressive Collapse Analysis
- Resource Type
- Academic Journal
- Authors
- Floriana Petrone; Li Shan; Sashi K. Kunnath
- Source
- International Journal of Concrete Structures and Materials. 2016-03 10(1):1-13
- Subject
- collapse
frame structure
modeling
reinforced concrete
simulation.
- Language
- Korean
- ISSN
- 1976-0485
2234-1315
The progressive collapse analysis of reinforced concrete (RC) moment-frame buildings under extreme loads is discussed from the perspective of modeling issues. A threat-independent approach or the alternate path method forms the basis of the simulations wherein the extreme event is modeled via column removal scenarios. Using a prototype RC frame building, issues and considerations in constitutive modeling of materials, options in modeling the structural elements and specification of gravity loads are discussed with the goal of achieving consistent models that can be used in collapse scenarios involving successive loss of loadbearing columns at the lowest level of the building. The role of the floor slabs in mobilizing catenary action and influencing the progressive collapse response is also highlighted. Finally, an energy-based approach for identifying the proximity to collapse of regular multi-story buildings is proposed.