Parametric study of deep excavation in clays

• Autorzy: Mitew-Czajewska M.

Identyfikatory

DOI

10.24425/bpas.2018.125342

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

numerical analysis; constitutive models; hypoplasticity; hardening soil model

PL

analiza numeryczna; modele konstytutywne; hypoplastyczność; utwardzanie gleby; model gleby

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2018
• Tom: Vol. 66, nr 5
• Strony: 747--754
• Opis fizyczny: Bibliogr. 41 poz., rys., tab., wykr.

Twórcy

autor

Mitew-Czajewska M.

• Warsaw University of Technology, Lecha Kaczyńskiego 16 St., 00-637 Warsaw, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).