Time effects in geomaterials

In this paper, time effects, seen as strain rate effects and creep phenomenon, on the mechanical behaviour of geomaterials are considered. Coupling between these effects and partial saturation of geomaterials is more particularly studied. An elasto-visco-plastic model, called RASTRA, is presented and validated from the comparison with experimental data

Eurocode 7 on ‘Geotechnical design’: a code for soil-structure interaction

Eurocode 7 on \u27Geotechnical design\u27 is actively being implemented throughoutEurope. Part 1 devoted to the \u27General rules\u27 was published by CEN in 2004. The Nationalannexes and documents have been prepared for final implementation in the variousEuropean countries. After describing shortly the history of the development of Eurocode 7,this paper gives the main contents of the code, as well as some aspects of particularinterest to the soil-structure interaction modelling: the design approaches (DA1, DA2 andDA3) for ULS verifications in persistent and transient design situations, SLS verifications andallowable movements of foundations