Research of stress-strain state and stability of a rokfill dam under seismic actions

Vestnik MGSU 11/2015
  • Orekhov Vyacheslav Valentinovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, chief research worker, Scientific and Technical Center “Examination, Design, Inspection”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 157-166

One of the main factors determining the safety of earth sea and river hydraulic structures erected on water-saturated grounds is the process of consolidation, manifested under the action of static and seismic loads. A feature of cohesionless soils located in the structure itself or in its base, is their potential ability to liquefaction under seismic impacts. This paper describes the method of calculating the saturated soil’s environments under seismic actions based on the numerical solution of differential equations of the theory of consolidation by finite element method. The results of the static problem solving for the phased construction of the installation are used as the initial conditions. In order to describe the deformability of soil materials mathematical model formed by the theory of plastic flow with hardening is used. The parameters of this model are determined by the results of triaxial testing of soils. As an example, we study the interaction of a sea rockfill dam with a sandy base under seismic impacts, determined by the synthetic accelerograms. The results of calculations of the stress-strain state of the two sections of the dam (shallow and deep) are presented, and assessment is made of the possibility of liquefaction of sandy soil base. It is shown that the pore pressure that occurs in water-saturated cohesionless soil base and the body of the dam under seismic impacts, unloads the soil skeleton, which leads to a decrease in local shear safety factors. And, in the less dense soil base of the shallow section of the dam, the soil skeleton is unloaded to a greater extent, which negatively affects its overall safety factor.

DOI: 10.22227/1997-0935.2015.11.157-166

  1. Belkova I.N., Glagovskiy V.B., Gol’din A.L., Lipovetskaya T.F. Konsolidatsiya osnovaniya i osadki damby D-3 kompleksa zashchitnykh sooruzheniy ot navodneniy Sankt-Peterburga [Consolidation of the Basе and Settlements of the Dam D-3 of Flood Protection Barrier Complex of St. Petersburg]. Izvestiya VNIIG im. B.E. Vedeneeva [Proceedings of B.E. Vedeneev VNIIG]. 2003, vol. 242. Osnovaniya i gruntovye sooruzheniya [Bases and Soil Foundations]. Pp. 60—67. (In Russian)
  2. Bugrov A.K., Golli A.V., Kagan A.A., Kuraev S.N., Pirogov I.A., Shashkin A.G. Naturnye issledovaniya napryazhenno-deformirovannogo sostoyaniya i konsolidatsii osnovaniy sooruzheniy kompleksa zashchity Sankt-Peterburga ot navodneniy [Field Studies of Stress-Strain State and Consolidation of Structures Foundations of Flood Protection Complex of Saint Petersburg]. Osnovaniya, fundamenty i mekhanika gruntov [Soil Mechanics and Foundation Engineering]. 1997, no. 1, pp. 2—9. (In Russian)
  3. Li Sa, Li Jingmei, Yang Jinliang. Liquefaction Analysis of the Foundation of Erwangzhuang Reservoir Dam in Tianjin. Proc. of the 4th Int. Conf. on Dam Engineering. Nanjing. A.A. Balkema. 2004, pp. 477—483.
  4. Zaretskiy Yu.K., Orekhov V.V. Seysmostoykost’ gruntovykh plotin [Seismic Stability of Earth Dams]. Sbornik nauchnykh trudov Gidroproekta [Collection of the Scientific Papers of Hydroproject]. Moscow, 2000, no. 159, pp. 361—372. (In Russian)
  5. Seed H.B., Lee K.L., Idriss I.M., Makadisi F.I. The Slides in the San Fernando Dams during the Earthquake of February 9, 1971. ASCE. J. of the Geotechnical Engineering Division. 1975, vol. 101, no. 7, pp. 651—688.
  6. Olson S.M., Stark T.D. Yield Strength Ratio and Liquefaction Analysis of Slopes and Embankments. Journal of Geotechnical and Geoenvironmental Engineering. 2003, vol. 129, no. 8, pp. 727—737. DOI: http://dx.doi.org/10.1061/(ASCE)1090-0241(2003)129:8(727).
  7. Seid-Karbasi M., Atukorala U. Deformations of a Zoned Rockfill Dam from a Liquefiable Thin Foundation Layer Subjected to Earthquake Shaking. 21st Century Dam Design —Advances and Adaptations. 31st Annual USSD Conference San Diego. California. April 11—15, 2011, pp. 1351—1367.
  8. Ohmachi T., Kohayakawa M. Missing Water at the Aratozawa Dam due to the Iwate-Miyagi Nairiku Earthquake in 2008. Proc. of the Int. Symp. on Dams for a Changing World — 80th Annual Meet. and 24th Cong. of ICOLD. Kyoto. Japan. 2012, pp. (6) 59—64.
  9. Casagrande A. Liquefaction and Cyclic Deformation of Sands. A Critical Review. Proceedings of the Fifth Panamerican Conference on Soil Mechanics und Foundation Engineering. Buenos Aires. Harvard Soil Mechanics Series. 1976, no. 88, 27 p.
  10. Seed H.B., Idriss I.M. Simplified Procedures for Evaluation Soil Liquefaction Potential. Journal of Soil Mechanics and Foundation Engineering. ASCE. Vol. 97, no. 9, pp. 1249—1273.
  11. Maslov N.N. Osnovy inzhenernoy geologii i mekhaniki gruntov [Fundamentals of Engineering Geology and Soil Mechanics]. Moscow, Vysshaya shkola Publ., 1982, 512 p. (In Russian)
  12. Seed H.B., Lee K.L. Liquefaction of Saturated Sands during Cyclic Loading. Journal of ASCE. 1996, vol. 92, no. 6, pp. 105—134.
  13. Kenji Ishihara. Soil Behavior in Earthquake Geotechnics. Clarendon Press. Oxford, 1996, 340 p.
  14. Youd T.L., Idriss I.M., Andrus R.D., Arango I., Castro G., Christian J.T., Dobry R., Finn W.D.L., Harder L.F., Hynes M.E., Ishihara K., Koester J.P., Liao S.S.C., Marcuson W.F., Martin G.R., Mitchell J.K., Moriwaki Y., Power M.S., Robertson P.K., Seed H.B., Stokoe K.H. Liquefaction Resistance of Soils: Summary Report from the 1996 NCEER and 1998 NCEER/NSF Workshops on Evaluation of Liquefaction Resistance of Soils. Journal of Geotechnical and Geoenvironmental Engineering. 2001, 127 (10), pp. 817—833. DOI: http://dx.doi.org/10.1061/(ASCE)1090-0241(2001)127:10(817).
  15. Orekhov V.V. Ob''emnaya matematicheskaya model’ i rezul’taty raschetnykh issledovaniy napryazhenno-deformirovannogo sostoyaniya osnovnykh sooruzheniy Rogunskoy GES [Volume Mathematical Model and the Results of Numerical Studies of the Stress-strain State of the Main Structures of the Rogun HPP]. Gidrotekhnicheskoe stroitel’stvo [Hydrotechnical Construction]. 2011, no. 4, pp. 12—19. (In Russian)
  16. Orekhov V.V. Raschet vzaimodeystviya sooruzheniy i vodonasyshchennykh gruntovykh osnovaniy pri staticheskikh i seysmicheskikh vozdeystviyakh [Calculation of the Interaction of Constructions and Water-Saturated Soil Foundations under Static and Seismic Loads]. Osnovaniya, fundamenty i mekhanika gruntov [Soil Mechanics and Foundation Engineering]. 2015, no. 2, pp. 8—12. (In Russian)
  17. Biot M.A. Theory of Propagation of Elastic Waves in Fluid Saturated Porous Solid. J. Acoust. Soc. of America. 1956, vol. 28, no. 1, pp. 168—179.
  18. Zaretskiy Yu.K., Lombardo V.N. Statika i Dinamika Gruntovykh Plotin [Statics and Dynamics of Earth Dams]. Moscow, Energoatomizdat Publ., 1983, 255 p.
  19. Zaretskiy Yu.K., Korchevskiy V.F. Zheleznodorozhnyy perekhod s materika na o. Sakhalin cherez proliv Nevel’skogo — Variant s glukhoy damboy i sudokhodnym kanalom [Railroad Crossing from the Mainland to Sakhalin Island across the Strait Nevelsky — Option with Deaf Dam and Navigation Channels]. Gidrotekhnicheskoe stroitel’stvo [Hydrotechnical Construction]. 2008, no. 4, pp. 42—49. (In Russian)
  20. Orekhov V.V. Kompleks vychislitel’nykh programm «Zemlya-89» [Computing Programs Complex “Earth-89”]. Issledovaniya i razrabotki po komp’yuternomu proektirovaniyu fundamentov i osnovaniy : mezhvuzovskiy sbornik [Interuniversity Collection “Research and Development in Computer-aided Design of Foundations and Bases”]. Novocherkassk, 1990, pp. 14—20. (In Russian)


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