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Analysis of using the empirical model of organic soil consolidation to predict settlement

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The paper describes two models for determining the constrained elasticity modulus of organic soils based on the settlement of an overloading embankment. In these methods, based on the settlement of the embankment of the load exerted on the subsoil, using the inverse problem, it is possible to determine the constrained modulus. A parameter determined in this way can also be determined during consolidation. Changes in the settlement at successive stages of consolidation can be used to determine the constrained modulus of the organic soil at a given point in time. Assuming a “temporarily stable” (quasi-stationary) state at each analysed stage of consolidation. The constrained elasticity modulus was determined for the settling at a given moment. constrained modulus tests of organic soils were carried out for two embankments previously described in the literature. In this case, the modulus was also analysed during consolidation. These embankments are founded on peat and peat-gyttja substrates. In both cases, the layer of organic soil was 4 m. The presented methods with the assumption of a one-dimensional state of deformation, despite the state of spatial stress, can be used during construction using the “design and build” technology. The constrained modulus determined from the embankment overload will represent the actual deformations – volumetric deformations (including other deformations that actually occurred) during the consolidation period. The paper was concluded with several conclusions.
Rocznik
Strony
111--117
Opis fizyczny
Bibliogr. 19 poz.
Twórcy
  • Prof.; West Pomeranian University of Technology in Szczecin, Faculty of Civil and Environmental, al. Piastów 50a,70-311 Szczecin, Poland
  • PhD.; West Pomeranian University of Technology in Szczecin, Faculty of Civil and Environmental, al. Piastów 50a,70-311 Szczecin, Poland
Bibliografia
  • [1] Huat, B. B., Prasad, A., Asadi, A., & Kazemian, S. (2014). Geotechnics of organic soils and peat. CRC Press, Taylor & Francis Group.
  • [2] Olszewska, M. (2018). Determination of Peat Elasticity Modulus (Constrained Modulus) Based on Field Measurement Using Simplified Consolidation Model. Civil and Environmental Engineering Reports, 28(2), 18–30.
  • [3] Hartlén, J., & Wolski, W. (Eds.). (1996). Embankments on organic soils. Elsevier.
  • [4] Saberian, M., Mehrinejad Khotbehsara, M., Jahandari, S., Vali, R., & Li, J. (2018). Experimental and phenomenological study of the effects of adding shredded tire chips on geotechnical properties of peat. International Journal of Geotechnical Engineering, 12(4), 347–356.
  • [5] Lambe, W. & Whitman, R. Soil Mechanics; John Wiley & Sons, Hoboken, NJ, USA, 1991.
  • [6] Coufal, R., & Olszewska, M. (2017). Analiza parametrów podłoża konsolidowanego nasypem z gruntu rodzimego na Ostrowie Grabowskim w Szczecinie (Analysis of consolidated soil parameters by embankment in Ostrów Grabowski in Szczecin). Inżynieria i Budownictwo, 73(5), 260–262.
  • [7] Coufal, R., & Olszewska, M. (2017). Analiza wartości osiadań konsolidowanych gruntów organicznych modelem numerycznym w porównaniu z wartościami pomierzonymi (Analysis of settlement of organic soil calculated according to numerical model in comparison with measured values). Czasopismo Inżynierii Lądowej, Środowiska i Architektury, 64(3/I), 81–90.
  • [8] Coufal, R. & Olszewska, M. (2016). Przeciążenie gruntu organicznego nasypem pod składowisko przeznaczone do magazynowania elementów konstrukcyjnych (Overloading of organic soil with an embankment, under the landfill designed for the storage of structural elements). Acta Scientiarum Polonorum. Architectura, 15(3), 93–102.
  • [9] Meyer, Z., & Olszewska, M. (2021). Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions. Materials, 14(22), 6842.
  • [10] Olszewska, M. (2022). Określenie wartości modułu ściśliwości konsolidowanego gruntu organicznego na podstawie badań terenowych (Determining the value of the consolidated organic soil elasticity modulus (constrained modulus) based on field measurement) (PhD thesis, West Pomeranian University of Technology in Szczecin), Poland, Szczecin.
  • [11] Meyer, Z. (1994). Empirical model of peat consolidation. In International workshop on advances in understanding and modelling the mechanical behaviour of peat (pp. 77–82).
  • [12] Meyer, Z. (2014). Czy możemy posadowić obiekty bezpośrednio na torfach?. (Can we place structures directly on peat?) XXI Seminarium Naukowe z cyklu Regionalne Problemy Inżynierii Środowiska, Szczecin.
  • [13] Chang, Y. C. E. (1981). Long term consolidation beneath the test fills at Väsby, Sweden.
  • [14] Hastlen, J., Wolski, W. (1996). Embankments on Organic Soils, Elsevier, Amsterdam.
  • [15] Lechowicz, Z. (1992). Ocena wzmocnienia gruntów organicznych obciążonych nasypem. (Evaluation of strengthening of organic soils loaded with embankment). Treatises and Monographs. Publications of Warsaw Agricultural University. no. 162, Poland, Warszawa.
  • [16] Lechowicz, Z. (1982). Zmiana wytrzymałości w procesie konsolidacji podłoża organicznego. (Change of strength in the process of consolidation of organic subsoil). (PhD thesis, Warsaw Agricultural University), Poland, Warsaw.
  • [17] Szymański, A. (1983). Charakterystyki procesu odkształcania pod obciążeniem wybranych rodzajów torfów (Characteristics of the deformation process under load of selected types of peat). (PhD thesis, Warsaw Agricultural University), Poland, Warsaw.
  • [18] Szymanski, A., & Lechowicz, Z. (1986). Back analysis of organic subsoil settlements. Annals of Warsaw Agricultural University. Land Reclamation, 22.
  • [19] Terzaghi, K., & Peck, R. B. (1948). Soil Mechanics. Engineering Practice. John Wiley and Sons, Inc., New York.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-5592874a-97dd-4ac3-95be-2bed9b68d813
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