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Structural Engineering and Mechanics
  Volume 5, Number 1, January 1997 , pages 51-58
DOI: https://doi.org/10.12989/sem.1997.5.1.051
 


Inelastic response of code-designed eccentric structures subject to bi-directional loading
Chandler AM, Correnza JC, Hutchinson GL

 
Abstract
    The influence of bi-directional earthquake-induced loading on eccentric (plan-asymmetric) building systems has been investigated. In the first part of the study, comparisons have been made with equivalent results from uni-directional studies. The results are important in developing analytical models appropriate to the formulation of design recommendations. It is concluded that for valid comparisons, both perpendicular horizontal earthquake components must be considered when using models with transversely-orientated elements. In the second part of the study, an assessment has been made of a simplified, uni-directional (lateral) design approach. For stiffness-eccentric systems, the latter approach gives accurate and reasonably conservative estimates of the critical flexible-edge deformation, but may under estimate the stiff-edge element ductility demand by a factor of two in the short-period range.
 
Key Words
    eccentric systems, inelastic torsional effects, bi-directional loading
 
Address
Chandler AM, UNIV COLL LONDON,DEPT CIVIL & ENVIRONM ENGN,GOWER ST,LONDON WC1E 6BT,ENGLAND
UNIV MELBOURNE,DEPT CIVIL & ENVIRONM ENGN,PARKVILLE,VIC 3052,AUSTRALIA
 

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