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The most challenging issue when analyzing geotechnical structures by means of finite element method is the choice of appropriate constitutive soil model, especially with reference to serviceability limit states. The paper presents parametric study of a deep excavation in clays aiming to qualify the applicability of different soil constitutive models in such specific soil conditions. Three types of constitutive models are considered in the paper: linear elastic – perfectly plastic model (Mohr-Coulomb) as a simple and well recognized reference, hypoplastic model (Hypoplastic Clay) and nonlinear elasto-plastic cap models (Hardening Soil and Hardening Soil Small). Numerical analysis was performed using two finite element codes – Plaxis and GEO5 FEM both in 2D space and the results were compared to in-situ displacements measurements. The discussion on the suitability of chosen constitutive models for advanced modelling of deep excavation in preconsolidated clays is presented.
Rocznik
Tom
Strony
747--754
Opis fizyczny
Bibliogr. 41 poz., rys., tab., wykr.
Twórcy
autor
- Warsaw University of Technology, Lecha Kaczyńskiego 16 St., 00-637 Warsaw, Poland
Bibliografia
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- [26] A. Amorosi, D. Boldini, G. de Felice, M. Malena, and G. di Mucci, „Numerical modelling of the interaction between a deep excavation and an ancient masonry wall”, Geotechnical Aspects of Underground Construction in Soft Ground – Yoo, Park, Kim & Ban (Eds), Korean Geotechnical Society, Seoul, Korea, pp. 245‒250 (2014).
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- [35] M. Superczyńska, “Geology-engineering evaluation of Poznań formation clays as construction subsoil“, dissertation, Warsaw University of Technology, 2015 [in Polish].
- [36] M. Superczyńska, “Values of the stiffness parameters of Poznań formation clays from Warsaw in small and medium strain ranges”, in: Maritime Engineering and Geotechnics vol. 3/2015, 207‒211 (2015) [in Polish].
- [37] R. Kuszyk, M. Superczyńska, and A. Lejzerowicz, “The methods of determination of elastic parameters of Pliocene clays for the 2nd metro line in Warsaw”, in: Transportation Overview 9, 59‒63. (2012) [in Polish].
- [38] T. Godlewski and M. Wszędyrówny-Nast, “Correlations of regional geotechnical parameters on the basis of CPTU and DMT tests”, in: “Historical Experience and Challenges of Geotechnical Problems in Baltic Region” Proceedings of 13th Baltic Sea Geotechnical Conference, Vilnius Gediminas Technical University (VGTU) Press, pp. 22‒27 (2016).
- [39] T. Godlewski and T. Szczepański, “Determination of soil stiffness parameters using in-situ seismic methods-in sight in repeatability and methodological aspects” in: Geotechnical and Geophysical Site Characterization 4, Coutinho & Mayne (eds), Taylor & Francis Group, London, pp. 441‒446 (2013).
- [40] GEO5 Users manual, Prague, Czech Republic, 2018.
- [41] Plaxis 2D Manuals, Delft, The Netherlands, 2017.
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-4b617753-6766-4159-a098-75025bc6f390