The Variation of Pore Pressure Related with Failure in Fine-Grained Soils under Uniform Cyclic Loadings
Bildiriler > Tam Metin Bildiri · 2008
Yazarlar: Volkan Okur, Selim ALTUN, Atilla Ansal
GeoCongress 2008, Amerika Birleşik Devletleri, Uluslararası, Davetli Konuşmacı, Tam Metin Bildiri, 2008-2008, ss 149-156
DOI: 10.1061/40972(311)19
Özet
This paper discusses pore- water pressure and failure in fine-grained soils and the influences of some factors under cyclic loading. A systematic study was conducted on pore-water pressure development during cyclic failure of low — to — medium plasticity clays. A series of cyclic triaxial and cyclic torsional tests were performed on undisturbed samples taken below the water table from various sites in Turkey. Consolidation tests were conducted to estimate preconsolidation pressures for each specimen. Tests were conducted under isotropic conditions in both test systems. The loadings were stopped at a prescribed strain level of ±2.5–3% assumed as failure. Pore-pressure accumulation during the tests was observed and pore-pressure values at the time of failure were analyzed with respect to different soil parameters. In addition to the other factors such as cyclic shear stress and cyclic strain amplitude, pore pressure-accumulation varies significantly with the mineralogy of the soil sample.