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Pile-foundation system shock loading in an axisymmetric approach

Vestnik MGSU 8/2015
  • Vasenkova Ekaterina Viktorovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Senior Lecturer, Department of Higher Mathematics, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zuev Vladimir Vasil’evich - Moscow State Institute of Radio Engineering, Electronics and Automation (MIREA Doctor of Physical and Mathematical Sciences, Professor, chair, Department of Applied Mathematics and Informatics, Moscow State Institute of Radio Engineering, Electronics and Automation (MIREA, 20 Stromynka str., Moscow, 107996, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 101-108

The basic problem of structural mechanics, namely the problem of pile shock loading sunk in a foundation, has been examined in an axisymmetric approach within defining relations for irreversible deformations offered earlier in the space of deformations. As a model of the theory of plasticity, the Mises model generalized by the authors has been accepted, the use of which solves a nonstationary system of nine two-dimensional equations with various entry and boundary conditions. Enlightened attitudes use approximate engineering approaches which allow estimating the behavior of a pile-foundation system. A solution is constructed mainly with the use of the theory of linear-elastic continuum. However they do not enable to consider various peculiarities of deformation behavior of soils and pile materials and to give an appropriate detailed picture of a system mode of deformation. Mechanical peculiarities of the behavior of foundation and pile materials discovered recently demand more enlightened attitudes to analyze a mode of deformation in a pile-foundation system considering both plasticity and fracture. The offered approach enables to give a complete picture of a mode of deformation in a pile-foundation system at any time and a picture of occurrence and development of plasticity and fracture zones.

DOI: 10.22227/1997-0935.2015.8.101-108

References
  1. Ter-Martirosyan A.Z. Ostatochnye deformatsii i napryazheniya v gruntovoy srede pri deystvii tsiklicheskoy nagruzki [Residual Deformations and Stresses in Soil Medium under Cyclic Load]. Stroitel’stvo — formirovanie sredy zhiznedeyatel’nosti : sbornik nauchnykh trudov XXIII Mezhdunarodnoy mezhvuzovskoy nauchno-prakticheskoy konferentsii molodykh uchenykh, doktorantov i aspirantov, 14—21.04.2010 [Collection of Scientific Papers of the 23rd International Interuniversity Scientific-Practical Conference of Young Scientists, Doctoral and Post-Graduate Students “Construction — Formation of Living Environment”, 14—21.04.2010]. Moscow, MGSU Publ., 2010, pp. 815—819. (In Russian)
  2. Burlakov V.N., Ter-Martirosyan A.Z. Dilatansiya, vliyanie na deformiruemost’ [Dilatancy, iInfluence on Deformability]. Sbornik trudov yubileynoy konferentsii, posvyashchennoy. 80-letiyu kafedry mekhaniki gruntov, 110-letiyu N.A. Tsytovicha, 100-letiyu S.S. Vyalova, Moskva [Proceedings of the Jubilee Conference Dedicated to the 80th Anniversary of the Department of Soil Mechanics, the 110-year Anniversary of N.A. Tsytovich, the 100th Anniversary of S.S. Vyalov, Moscow]. Moscow, MGSU Publ., 2010, pp. 105—112. (In Russian)
  3. Ter-Martirosyan Z.G., Ala Said Mukhammed Abdul Malek, Ter-Martirosyan A.Z., Ainbetov I.K. Napryazhenno-deformirovannoe sostoyanie dvukhsloynogo osnovaniya s preobrazovannym verkhnim sloem [Stress-Strain State of a double-layer foundation with a transformed upper layer]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2008, no. 2, pp. 81—95. (In Russian)
  4. Zuev V.V., Shmeleva A.G. Osesimmetrichnoe udarnoe nagruzhenie uprugoplasticheskoy sredy s razuprochneniem i peremennymi uprugimi svoystvami [Axisymmetric Shock Loading of an Elasto-Plastic Medium with Softening and Variable Elastic Properties]. Vestnik Samarskogo gosudarstvennogo universiteta : Estestvennonauchnaya seriya [Vestnik of Samara State University : Natural Sciences]. 2007, no. 2 (52), pp. 100—106. (In Russian)
  5. Zuev V.V., Shmeleva A.G. Modelirovanie povedeniya sloistykh zashchitnykh pregrad pri dinamicheskikh nagruzkakh [Modeling of the Behavior for Stratified Protective Barriers at Dynamic Loads]. Promyshlennye ASU i kontrollery [Industrial Automatic Control Systems and Controllers]. 2009, no. 12, pp. 28—30. (In Russian)
  6. Zuev V.V., Shmeleva A.G. Nekotorye aktual’nye zadachi dinamicheskogo nagruzheniya uprugoplasticheskikh sred s uslozhnennymi svoystvami [Some Current Problems of Dynamic Loading for Elasto-Plastic Media with Complicated Properties]. Vestnik Nizhegorodskogo universiteta im. N.I. Lobachevskogo [Vestnik of Lobachevsky University of Nizhni Novgorod]. 2011, no. 4 (5), pp. 2189—2191. (In Russian)
  7. Shmeleva A.G. Udarnoe nagruzhenie plasticheskikh sred [Shock Loading of Plastic Media]. LAP Lambert Academic Publishing, 2012, 128 p. (In Russian)
  8. Mata M., Casals O., Alcal J. The Plastic Zone Size in Indentation Experiments: The Analogy with the Expansion of a Spherical Cavity. Int. J. of Solids and Structures. 2006, vol. 43, no. 20, pp. 5994—6013. DOI: http://dx.doi.org/10.1016/j.ijsolstr.2005.07.002.
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  12. Feldgun V.R., Karinski Y.S., Yankelevsky D.Z., Kochetkov A.V. Blast Response of a Lined Cavity in a Porous Saturated Soil. Int. J. of Impact Engineering. 2008, vol. 35, no. 9, pp. 953—966. DOI: http://dx.doi.org/10.1016/j.ijimpeng.2007.06.010.
  13. Aptukov V.N. Expansion of a Spherical Cavity in a Compressible Elastoplastic Medium. Report 1. Effect on Mechanical Characteristics, Free Surface, and Lamination. Strength of Materials. 1991, vol. 23, no. 12, pp. 1262—1268. DOI: http://dx.doi.org/10.1007/BF00779445.
  14. Anand L., Gu C. Granular Materials: Constitutive Equations and Strain Localization. Journal of the Mechanics and Physics of Solids. 2000, vol. 48, no. 8, pp. 1701—1733. DOI: http://dx.doi.org/10.1016/S0022-5096(99)00066-6.
  15. Zou J.-F., Li L., Zhang J.-H., Peng J.-G., Wu Y.-Z. Unified Elastic Plastic Solution for Cylindrical Cavity Expansion Considering Large Strain and Drainage Condition. Gong Cheng Li Xue/Engineering Mechanics. 2010, vol. 27, no. 6, pp. 1—7.
  16. Frishter L.Yu. Raschetno-eksperimental’nyy metod issledovaniya napryazhenno-deformiruemogo sostoyaniya sostavnykh konstruktsiy v zonakh kontsentratsii napryazheniy [Computational and Experimental Method of Stress-Strain State Investigation of Composite Structures in the Areas of Stress Concentration]. Stroitel’naya mekhanika inzhenernykh konstruktsiy sooruzheniy [Structural Mechanics of Engineering Constructions and Buildings]. 2008, no. 2, pp. 20—27. (In Russian)
  17. Frishter L.Yu., Mozgaleva M.L. Sopostavlenie vozmozhnostey chislennogo i eksperimental’nogo modelirovaniya napryazhenno-deformiruemogo sostoyaniya konstruktsiy s uchetom ikh geometricheskoy nelineynosti [Comparison of Capabilities of Numerical and Experimental Simulation for Stress-Strain State of Structures Subject to their Geometric Nonlinearity]. International Journal for Computational Civil and Structural Engineering. 2010, vol. 6, no. 1—2, pp. 221—222. (In Russian)
  18. Antonov V.I. Nachal’nye napryazheniya v anizotropnom neodnorodnom tsilindre, obrazovannom namotkoy [Initial Stresses in an Anisotropic Nonuniform Cylinder Created by Winding]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 4, vol. 1, pp. 29—33. (In Russian)
  19. Antonov V.I. Metod opredeleniya nachal’nykh napryazheniy v rulone pri nelineynoy zavisimosti mezhdu napryazheniyami i deformatsiyami [Method of Initial Stress Determination in a Roll with Nonlinear Dependence of Stresses and Deformations]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 4, vol. 3, pp. 177—180. (In Russian)
  20. Antonov V.I. Napryazheniya v rulone pri dopolnitel’nom natyazhenii lenty [Stresses inside a Roll in Case of Higher Belt Tension]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2013, no. 10, pp. 24—29. (In Russian)
  21. Zuev V.V. Opredelyayushchie sootnosheniya i dinamicheskie zadachi dlya uprugoplasticheskikh sred s uslozhnennymi svoystvami [Defining Relations and Dynamic Problems for Elasto-Plastic Media with Complicated Properties]. Moscow, Fizmatlit Publ., 2006, 176 p. (In Russian)

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INTERACTION OF A LONG SINGLE PILE THAT HAS A DOUBLE-LAYER BASE WITH ACCOUNT FOR COMPRESSIBILITY OF THE PILE SHAFT

Vestnik MGSU 4/2012
  • Ter-Martirosyan Zaven Grigor'evich - Moscow State University of Civil Engineering (MSUCE) , Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Trinh Tuan Viet - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Department of Mechanics of Soils, Ground Foundation and Foundation Mechanics, Moscow State University of Civil Engineering (MSUCE), 26, Yaroslavskoe Shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 28 - 34

WITH ACCOUNT FOR COMPRESSIBILITY OF THE PILE SHAFT
The authors provide their solution to the problem of interaction of a long compressible pile that has a double-layer linear deformable base. The paper demonstrates that taking account of compressible properties of the pile material leads to qualitatively new distribution of shearing stresses over the surface of a cylindrical pile. It is noteworthy that increase of the pile length and stiffness of the upper section of the base raise the share of the load perceived by the surface of the pile. Besides, in particular conditions of the soil environment, the load perceived by the lower section of the base may reach approximately 20-30 % of the total load.

DOI: 10.22227/1997-0935.2012.4.28 - 34

References
  1. Ter-Martirosyan Z.G. Mekhanika gruntov [Soil Mechanics]. Moscow, ASV Publ., 2009, 550 p.
  2. Ter-Martirosyan Z.G, Nguyen Giang Nam. Vzaimodeystvie svay bol'shoy dliny s neodnorodnym massivom s uchetom nelineynykh i reologicheskikh svoystv gruntov [Interaction between Long Piles and Heterogeneous Soil Body with the Account for Nonlinear and Rheological Properties of Soils]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2008, no. 2, pp. 3—14.
  3. Ukhov S.B., Semenov V.V., Znamenskiy V.V., Ter-Martirosyan Z.G., Chernyshev S.N. Mekhanika gruntov, osnovaniya i fundamenty [Soil Mechanics, Bases and Foundations]. Moscow, ASV Publ., 2004, 566 p.
  4. Ter-Martirosyan Z.G., Trinh Tuan Viet. Vzaimodeystvie odinochnoy dlinoy svai s osnovaniem s uchetom szhimaemosti stvola svai [Interaction between a Single Long Pile and the Bedding with Account for Compressibility of the Pile Shaft]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2011, no. 8, pp. 104—111.
  5. Nguyen Giang Nam. Identification of the Settlement of the Round Die with Allowance of Its Embedding. Collected papers of the 4th International Scientific Conference of Young Scientists, Postgraduates, and Doctoral Students. Construction as Formation of the Living Environment. Moscow, MSUCE, 2006.

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Numerical investigations of work of driven pile on claystones

Vestnik MGSU 2/2019 Volume 14
  • Sychkina Evgeniya N. - Perm National Research Polytechnic University (PNRPU) Candidate of Technical Sciences, Associate Professor of the Department of Construction Technology and Geotechnics, Perm National Research Polytechnic University (PNRPU), 29 Komsomolsky prospekt, Perm, 614990, Russian Federation.
  • Antipov Vadim V. - Perm National Research Polytechnic University (PNRPU) postgraduate student of Department of Construction Technology and Geotechnics, Perm National Research Polytechnic University (PNRPU), 29 Komsomolsky prospekt, Perm, 614990, Russian Federation.
  • Ofrikhter Yan V. - Perm National Research Polytechnic University (PNRPU) postgraduate student of Department of Construction Technology and Geotechnics, Perm National Research Polytechnic University (PNRPU), 29 Komsomolsky prospekt, Perm, 614990, Russian Federation.

Pages 188-198

Introduction. Reviewed the features of the work of the pile on Permian claystones with the help of numerical and field experiments, analytical calculations. Materials and methods. Numerical modeling was performed in the Plaxis 3D and Midas GTS NX software packages. Full-scale tests of driven piles are made in accordance with the requirements of GOST 20276-2012. The obtained results are compared with the results of analytical calculations according to SP 24.13330.2011. Results. The scientific novelty of the investigation consists in a comparative analysis of the results of numerical modeling of the interaction of a driving pile with claystones with the results of field tests and analytical calculations. Finite element analysis in software package Plaxis 3D using Hardening Soil model shows higher values of settlement (up to 6 times) in relation to stabilized settlement of full-scale pile tests. Calculations in the software package Midas GTS NX showed overestimated values of pile settlements in relation to full-scale pile tests (13-24 times). Analytical calculations in accordance with SP 24.13330.2011 also showed overestimated (up to 3 times) values of the maximum pile settlement in relation to the stabilized settlement during full-scale pile tests. Conclusions. The calculations by the finite element method in the package Plaxis 3D and Midas GTS NX, by the analytical method according to SP 24.13330.2011, show overestimated values of settlement in relation to the stabilized settlement of piles on claystones. Using the Linear-Elastic model for claystones in numerical calculations in Plaxis 3D provides a value close to the settlement of full-scale pile. However, the use of this model is not fully justified for claystones due to the presence of residual deformations and the nonlinear character of pile settlement during loading. Necessary to correct the existing numerical and analytical methods for calculating pile foundations on claystones. It is necessary to continue the work on the further generalization of the experience of arranging piles on weathered claystones in order to evaluate the long-term work of not only a single pile, but also a pile foundation.

DOI: 10.22227/1997-0935.2019.2.188-198

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INTERACTION BETWEEN LONG PILES AND THE SOIL BODY AS PART OF THE SLAB-PILE FOUNDATION

Vestnik MGSU 3/2012
  • Ter-Martirosyan ZavenGrigorevich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Distinguished Scholar of the Russian Federation, Head of Department of Soils, Ground Foundation and Foundation Mechanics 8 (499) 261-59-88, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoeshosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 74 - 78

The paper provides a definition of and a solution to the problems of interaction between long piles and the soil body as part of the slab-pile foundation with the due account for the interval between the piles, the length of piles and their correlations, as well as the nonlinear properties of soil identified by analytical and numerical methods through the application of Plaxis-2d software.
It is proven that the above properties produce a substantial impact onto the stress-strain state of soils that interact with the pile and the grid, and the impact values make it possible to assess the rigidity of the slab-pile foundation that is needed to solve the problems of the multiplicity of piles as well as the problems of distribution of the total load between the piles and the grid.

DOI: 10.22227/1997-0935.2012.3.74 - 78

References
  1. Ter-Martirosyan Z.G. Mekhanika gruntov [Soil Mechanics]. Moscow, ASV, 2009, 550 p.
  2. Ter-Martirosyan Z.G., NguenZang Nam. Vzaimodeystvie svay bol’shoy dliny s neodnorodnym massivom s uchetom nelineynykh i geologicheskikh svoystv gruntov [Interaction between Long Piles and the Heterogeneous Soil Body with the Account for Nonlinear and Rheological Properties of Soils].Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering], 2008, Issue 2, pp. 3—14.
  3. Ter-Martirosyan Z.G., Trinh Tuan Viet. Vzaimodeystvie odinochnoy dlinoy svai s osnovaniem s uchetom szhimaemosti stvola svai [Interaction between a Single Long Pile and the Bedding with the Account for the Compressibility of the Pile Shaft]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering], Issue 8, 2011, pp. 104—111.

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