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Structural Engineering and Mechanics
  Volume 3, Number 3, May 1995 , pages 255-272
DOI: https://doi.org/10.12989/sem.1995.3.3.255
 


SEISMIC ENERGY-DISSIPATION IN TORSIONALLY RESPONDING BUILDING SYSTEMS
CORRENZA JC, HUTCHINSON GL, CHANDLER AM

 
Abstract
    The paper considers aspects of the energy dissipation response of selected realistic forms of torsionally balanced and torsionally unbalanced building systems, responding to an ensemble of strong-motion earthquake records. Focus is placed on the proportion of the input seismic energy which is dissipated hysteretically, and the distribution of this energy amongst the various lateral load-resisting structural elements. Systems considered comprise those in which torsional effects are discounted in the design, and systems designed for torsion by typical code-defined procedures as incorporated in the New Zealand seismic standard. It is concluded that torsional response has a fundamentally significant influence on the energy dissipation demand of the critical edge elements, and that therefore the allocation of appropriate levels of yielding strength to these elements is a paramount design consideration. Finally, it is suggested that energy-based response parameters be developed in order to assist evaluations of the effectiveness of code torsional provisions in controlling damage to key structural elements in severe earthquakes.

 
Key Words
    ENERGY DISSIPATION, HYSTERETIC BEHAVIOR, SEISMIC RESPONSE, TORSIONAL DESIGN
 
Address
CORRENZA JC, UNIV MELBOURNE,DEPT CIVIL & ENVIRONM ENGN,PARKVILLE,VIC 3052,AUSTRALIA
UNIV COLL LONDON,DEPT CIVIL & ENVIRONM ENGN,LONDON WC1E 6BT,ENGLAND
 

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