Ground movements around excavations in granular soils: a few remarks on the influence of the constitutive assumptions on FE predictions
✍ Scribed by Gioacchino Viggiani; Claudio Tamagnini
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 407 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1082-5010
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✦ Synopsis
Two di!erent approaches for modelling soil non-linearity (hardening plasticity and hypoplasticity) are compared with reference to the analysis of soil}structure interaction in an excavation in dense dry sand, supported by a propped diaphragm wall. The analysis focuses on the prediction of wall and soil movements. A commercial FE code has been used for the elastoplastic analyses, in order to assess the performance of a readily available design tool in current geotechnical engineering practice as compared to the predictions of a more advanced research tool. Although obtained for an idealized scheme, the results allow a number of more general conclusions to be drawn on the in#uence of the constitutive assumptions.