Structural Engineering and Mechanics

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Seismic energy dissipation in torsionally responding building systems

  • Correnza, J.C. (Department of Civil and Environmental Engineering, The University of Melbourne) ;
  • Hutchinson, G.L. (Department of Civil and Environmental Engineering, The University of Melbourne) ;
  • Chandler, A.M. (Department of Civil and Environmental Engineering, University College London)
  • Published : 1995.05.25
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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.

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References

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Cited by

  1. Seismic Torsional Provisions: Influence on Element Energy Dissipation vol.122, pp.5, 1996, https://doi.org/10.1061/(ASCE)0733-9445(1996)122:5(494)
  2. Seismic response of torsional structures considering the possibility of diaphragm flexibility vol.77, pp.4, 1995, https://doi.org/10.12989/sem.2021.77.4.463