A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Small Strain Stiffness of a Soft Clay Along Stress Paths Typical of Excavations
Abstract In this paper, an experimental work carried out on Pisa clay is described. Undisturbed samples are subjected to stress paths analogous to those followed by soil elements adjacent to excavations. The stress paths adopted in the experimental programme derive from a simplified analysis of a propped retaining wall, using limit equilibrium and allowing, through an approximate procedure, for wall flexibility and for seepage around the wall. Such stress paths are corroborated by in situ measurements and numerical results taken from the literature. It comes out that the range of stress path directions for soil elements close to an excavation can be quite wide. The experimental results are analysed in terms of secant shear stiffness and compared to results obtained from bender element measurements. Also, a generalised definition of stiffness is used, which accounts for both spherical and deviatoric strain components. Results obtained at small strains are compared with predictions of cross-anisotropic elasticity.
Small Strain Stiffness of a Soft Clay Along Stress Paths Typical of Excavations
Abstract In this paper, an experimental work carried out on Pisa clay is described. Undisturbed samples are subjected to stress paths analogous to those followed by soil elements adjacent to excavations. The stress paths adopted in the experimental programme derive from a simplified analysis of a propped retaining wall, using limit equilibrium and allowing, through an approximate procedure, for wall flexibility and for seepage around the wall. Such stress paths are corroborated by in situ measurements and numerical results taken from the literature. It comes out that the range of stress path directions for soil elements close to an excavation can be quite wide. The experimental results are analysed in terms of secant shear stiffness and compared to results obtained from bender element measurements. Also, a generalised definition of stiffness is used, which accounts for both spherical and deviatoric strain components. Results obtained at small strains are compared with predictions of cross-anisotropic elasticity.
Small Strain Stiffness of a Soft Clay Along Stress Paths Typical of Excavations
Fortuna, S. (author) / Callisto, L. (author) / Rampello, S. (author)
2007-01-01
12 pages
Article/Chapter (Book)
Electronic Resource
English
Small Strain Stiffness of A Soft Clay along Stress Paths Typical of Excavations
| British Library Conference Proceedings | 2007
Observed behavior of reconstituted clay along stress paths typical of excavations
| British Library Conference Proceedings | 1999
| British Library Online Contents | 1997
| British Library Conference Proceedings | 1998