Soil-structure interaction effects on the seismic collapse capacity of steel moment-resisting frame buildings. (August 2021)

• Record Type: Journal Article
• Authors: Hamidia, Mohammadjavad; Shokrollahi, Nima; Nasrolahi, Maryam
• Is Part Of: Structures. Volume 32(2021)
• Page Start: 1331
• Page End: 1345
• Publication Date: 2021-08
• Subjects: Soil structure interaction (SSI) -- Collapse margin ratio (CMR) -- Steel moment-resisting frame (SMRF) -- Multiple strip analysis (MSA); Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2021.03.068
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: FEMA P695 proposes quantification of soil-structure effects as a field of research to adjust the collapse margin ratio. The Winkler foundation with elastic and inelastic stiffness is used to address interaction effects. Three-, nine- and 20-story steel moment-resisting frame buildings are selected, and the collapse margin ratio of the buildings for site classes C and D are evaluated. The nonlinear soil behavior leads mostly to an increase in seismic collapse probability compared to linear soil behavior and fixed-base conditions. Finally, simplified adjustment equations are proposed for estimating the collapse margin ratio of structures considering the soil-structure interaction effects.