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4. Evaluating seismic site effects: competition between amplification and de-amplification
We have already seen that soil behavior during cyclic loading depends on the level of distortion or deformation to which it is subjected.
The characterization of soil behavior through geotechnical investigations was then addressed.
In practice, three main types of soil representation (Figure 24 ) are used depending on the level of distortion γ to which the soils are subjected, and three main types of analysis methods are respectively implemented to model soil behavior.
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Evaluating seismic site effects: competition between amplification and de-amplification
From phenomena to their integration in the justification of structures
Bibliography
Software tools
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Cyberquake – This software models the response of soils to seismic shocks.
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Code-Aster – This is a free software package for numerical simulation of structural mechanics.
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Standards and norms
- Calcul des structures pour leur résistance au séisme. Partie 5 : Fondations, ouvrages de soutènements et aspects géotechnique. - NF EN 1998-5 AFNOR - septembre 2005
Regulations
Decree no. 2010-1254 of October 22, 2010 on seismic risk prevention.
Décret n° 2010-1255 du 22 octobre 2010 portant délimitation des zones de sismicité du territoire français.
Arrêté du 22 octobre 2010 relative à la classification et aux règles de constructions parasismiques applicables aux bâtiments de la classe dite "à risque normal" (Order of October 22, 2010 on the classification...
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