Geotechnical parameters in description of soft soils consolidation

• Autorzy: Gabryś K.
• Języki publikacji: EN

Abstrakty

EN

The construction of embankments on organic soils is associated with necessary to improve subsoil conditions. Soft organic soils are often highly compressible and have low shear strengths, what causes large deformation, both vertically as well as horizontally, that may occur during and after the construction period [11]. The settlements usually appear quickly but can also continue for a very long time because of the secondary compression [6]. However, in Poland there are large areas with soft organic soils where diff erent kinds of embankments have to be constructed. In these cases, the prediction of soil behavior and the selection of a proper design method becomes an important and complex engineering task. In this paper the analysis of the soft subsoil deformation process under load is presented. The main factors that determine the consolidation of soft subsoil are described, as well as the proposition of changes in organic soils properties for better prediction of the construction’s settlements. Based on fi eld observations and laboratory test results, the characterization of organic soft soils and the results the calculation procedure are proposed.

Słowa kluczowe

EN

organic soils; geotechnical parameters; consolidation; deformation process

• Wydawca: Foundation for Young Scientists
• Czasopismo: Challenges of Modern Technology
• Rocznik: 2010
• Tom: Vol. 1, no. 1
• Strony: 61--64
• Opis fizyczny: Bibliogr. 11 poz., wykr., tab.

Twórcy

autor

Gabryś K.

• Department of Geotechnical Engineering, Warsaw University of Life Sciences

Bibliografia

• [1] Candler, C.J., and F.R.D. Chartress. “Settlements measurement and analysis of tree trial embankments on soft peaty ground”. Baltic Conference. Tallin, 1988.
• [2] Fürstenberg, A., et al. “Eff ectiveness of vertical drains in organic soils”. Proc. of the 8th European Conference on Soil Mechanics and Foundation Engineering. Vol. 2. Helsinki, 1983: 611–616.
• [3] Haan, E.J. “An overview of the mechanical behavior of peats and organic soils and some appropriate construction techniques”. Special lectures on Conference on Recent Advances in Soft Soils Engineering. Kuching, Malaysia, 1997: 17–46.
• [4] Larsson, R. Basic behavior of Scandinavian soft clays. Report No 4. Linkoeping: Swedish Geotechnical Institute, 1977.
• [5] Larsson, R. Consolidation of soft soils. Report No 29. Linkoeping: Swedish Geotechnical Institute, 1986.
• [6] Szymański, A., and W. Sas. „Charakterystyki odkształcenia w opisie konsolidacji gruntów organicznych”. Inżynieria Morska i Geotechnika 3 (2003): 156–159 (in Polish).
• [7] Szymański, A., et al. “Secondary compression in organic soils”. Annals of Warsaw Agricultural University — SGGW. Land Reclamation No 35a, 2004: 221–228.
• [8] Szymański, A., and W. Sas. „Parametry geotechniczne w opisie procesu konsolidacji gruntów organicznych”. Jubileuszowa Sesja Naukowa. Geotechnika w Budownictwie i Inżynierii Środowiska. Gdańsk: Politechnika Gdańska, 2000: 229–235 (in Polish).
• [9] Szymański, A., et al. “Deformation behaviour of organic subsoil on the basis of fi eld and laboratory tests”. Electronic Journal of Polish Agricultural Universities 12, 1 (2009).
• [10] Szymański, A. “Numerical analysis of consolidation performance in layered soft subsoil”. Conf. on Recent Advances in Soft Soil Engineering. Malaysia, Kuching, 1997: 230–241.
• [11] Wolski, W. et al. Two Stage — Constructed Embankments on Organic Soils. Report No 32. Linkoeping: Swedish Geotechnical Institute, 1988.