DOI: https://doi.org/10.32347/2410-2547.2019.103.63-70

The stress-strain state investigation of underground structures on the basis of soil models with adjusted input parameters

Ivan Solodei, Eduard Petrenko, Gherman Zatyliuk

Abstract


The article evaluates the possibility of using Hardening Soil Model and Coulomb-Mohr soil models with corrected input parameters by investigating the stress-strain state (SSS) of underground structures.

Today there are many different mathematical models of soil: Coulomb-Mohr, Hardening Soil Model and its derivatives (Hardening Soil Small-strain), Soft Soil and its derivatives, Cam-Clay, etc. They are characterized by the varying degrees of complexity and the range of use.

In geotechnical practice, the simplest perfectly elastic-plastic soil model of Coulomb-Mohr is used very often for calculations, but having several disadvantages.  Hardening Soil Model is an advanced nonlinear soil model which is versatile and suitable for modeling a wide range of soil bases. The features of the model include the use of a nonlinear relationship between strains and stresses, the separation of shear and bulk components of deformation, a separate trajectory of deformation during unloading-reloading, the dependence of deformation characteristics on the level of stresses at the base, etc. However, the large number of input parameters, which are not verified by some regulations, makes it difficult to use.

The influence on the magnitude and nature of the distribution of the stress-strain state of underground structures using the Hardening Soil model with the corrected parameters obtained using empirical formulas is analyzed.

Also the question is relevant regarding the usage of the Coulomb-Mohr method with the extension of the methods (different options for deformation of the module with depth, using Eur deformation module during loading and reloading), it may be possible to reduce the number of inaccessible issues in order to inflict on the deformed condition of underground structures.


Keywords


underground structure; finite element method (FEM); Coulomb-Mohr model; Hardening Soil model; stress-strain station (SSS)

Full Text:

PDF

References


Solodei I.I. Ispolzovanie gruntovykh modelej pri chislennom modelirovanii podzemnykh sooruzhenij (Using soil models in numerical simulation of underground structures) / I.I. Solodei, Gh. A. Zatylyuk // Wschodnioeuropejskie Czasopismo Naukowe (East European Scientific Journal) – Warszawa, Polska – 2019. – #8 (48) – część 2 – P. 48-55

Orekhov V.V. Ispol`zovanie modeli uprochnyayushhegosya grunta dlya opisaniya povedeniya peska razlichnoj plotnosti pri nagruzhenii (Using hardening soil model to describe the behavior of sand of different densities under loading) / V.V. Orekhov, M.V. Orekhov // Vestnik MGSU. – 2014. – №2. – P. 91-97.

Holubev A.I. Vybor modeli hrunta i eё parametrov v raschёtakh heotekhnicheskikh obektov (The choice of soil model and its parameters in the calculation of geotechnical objects) / A.I. Holubev A.V. Seletskii // Trudy mezhdunarodnoi konferentsii po heotekhnike "Heotekhnicheskie problemy mehapolisov (GEOMOS 2010). – 2010. – tom 4. – P. 1727-1732

Perel`muter A.V. Raschetny`e modeli sooruzhenij i vozmozhnost` ikh analiza (Design models of structures and the possibility of their analysis) / A.V. Perelmuter, V.I. Slivker. – Moscow: SKAD SOFT, 2011. 736 p.

Solodei I. Implementation of the linear elastic structure half-space in the Plaxis in the study of settlements / I. Solodei, Gh. Zatyliuk // Proceedings of Odessa Polytechnic University, – 2019. – Issue 1 (57) – P. 22-28.

Solodei I.I. Vyznachennia navantazhen vid masyvu hruntovykh sypuchykh porid pry proektuvanni pidzemnykh sporud (Determination of loads from array of running soil when designing underground structures) / I.I. Solodei, Gh.A. Zatyliuk // Strength of Materials and Theory of Structures. – 2016. – №97. – P. 145–154.

Mirnyj A. Yu. Statisticheskij analiz parametrov modeli hardening soil dlya gruntov moskovskogo regiona (Statistical analysis of hardening soil model mechanical parameters for Moscow region soils) / A. Yu. Mirnyj, K. A. Budoshkina, V. V. Shishkina // Geotechnics. – 2017. – № 4. – P. 58-64.


Refbacks

  • There are currently no refbacks.


Copyright (c) 2020 Ivan Solodei, Eduard Petrenko, Gherman Zatyliuk