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Structural Engineering and Mechanics
  Volume 75, Number 2, July 2020, pages 145-155
DOI: https://doi.org/10.12989/sem.2020.75.2.145
 


The effect of accidental eccentricities on the inelastic torsional response of buildings
George K. Georgoussis and Anna Mamou

 
Abstract
    This paper investigates the influence of spatial varations of accidental mass eccentricities on the torsional response of inelastic multistorey reinforced concrete buildings. It complements recent studies on the elastic response of structural buildings and extends the investigation into the inelastic range, with the aim of providing guidelines for minimising the torsional response of structural buildings. Four spatial mass eccentricity configurations of common nine story buildings, along with their reversed mass eccentricities subjected to the Erzincan-1992 and Kobe-1995 ground motions were investigated, and the results are discussed in the context of the structural response of the no eccentricity models. It is demonstrated that when the initial linear response is practically translational, it is maintained into the inelastic phase of deformation as long as the strength assignment of the lateral resisting bents is based on a planar static analysis where the applied lateral loads simulate the first mode of vibration of the uncoupled structure.
 
Key Words
    earthquake engineering; mass eccentricity; torsion; inelastic numerical modeling
 
Address
Department of Civil Engineering Educators, School of Pedagogical and Technological Education (ASPETE),
N. Heraklion 14121, Attica, Greece
 

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