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