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Attempts to advance performance-based design in earthquake engineering represent a joint effort of research and practising communities. A reliable estimate of the maximum probable displacement demand due to a design event, which typically comprises a series of earthquakes as implied by design spectra, is essential to developing reliable performance-based design guidelines.

A key requirement in a displacement-based design approach is an estimate of the interstorey structural drift. Spectral analyses with elastic-perfectly plastic models are usually adopted to derive an estimation of the value of this quantity. Even though this approach seems to be appropriate in the case of ductile structures, it might prove unsafe data in the case of brittle structures. Spectral analyses performed by using a hysteretic model characterised by stiffness and strength deterioration have been used to derive additional information about the effects of these quantities on inelastic seismic demands. .

Additional information

Authors: COLOMBO A, Laboratoire Sols, Solides, Structures, Grenoble (FR);NEGRO P, European Commission, Joint Research Centre, Institute for Systems, Informatics and Safety, European Laboratory for Structural Assessment (ELSA), Ispra (IT)
Bibliographic Reference: An oral report given at: 12th European Conference on Earthquake Engineering Organised by: European Association for Earthquake Engineering Held at: London (GB), 9-13 September 2002
Availability: The conference proceedings will be published by Elsevier Science.
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