Conference on Performance-Based Design in Earthquake Geotechnical Engineering
Taormina (Centro Conferenze)
28/05/2012 - 30/05/2012
Pseudo-static analysis is still the most used methodology for assessing the stability of geotechnical systems subjected to earthquake loadings. However, this methodology did not give any information on the deformations and permanent displacements induced by seismic actions.
Moreover, it is questionable to use this approach when the geotechnical systems are affected by frequent and rare seismic events. By the way the peak ground acceleration have been increased from 0.2- 0.3 g in the seventies to 0.6-0.8g at the present time. It is needed to shift from pseudo-static approach to performance based analysis.
In the most general sense, the performance of a geotechnical system can be defined in terms of:
- technical performance, usually quantified through displacement and/or capacity based design;
- economical performance, usually defined as the optimization of construction versus maintenance costs;
- environmental performance, which could be defined as the optimization of carbon emission versus cost of construction, maintenance and operational costs.
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