2. Dynamic soil behavior
2.1 Shear modulus G and shear strain amplitude
Deformation moduli depend on the amplitude of deformation. The orders of magnitude of deformations for structures are on average between 10 -4 and 10 -2 whereas conventional tests (penetrometer, oedometer, conventional triaxial) give moduli representative of deformations in excess of 10 -2 .
For the design of structures under the action of an earthquake, knowledge of the shear modulus G in the deformation range 10 -4 and 10 -6 is required, as is the damping ξ.
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Dynamic soil behavior
Bibliography
Standards and norms
- Eurocode 7: geotechnical design – Part 1: General rules (Classification number: P94-251-1). - NF EN 1997-1 - (juin 2005)
- Eurocode 7 – Geotechnical calculations – Part 1: General rules – National Annex to NF EN 1997-1:2005 (Classification number: P94-251-1/NA). - NF EN 1997-1/NA - (septembre 2006)
- Eurocode 7: geotechnical design – Part 2: Site reconnaissance and testing (Classification number: P94-252)....
Regulations
Arrêté du 22 octobre 2010 and Arrêté du 19 juillet 2011 modifiant l'arrêté du 22 octobre 2010 relatif à la classification et aux règles de construction parasismique applicables aux bâtiments de la classe dite " à risque normal ".
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