Geomechanics and Engineering

Techno-Press (테크노프레스)
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Settlement prediction for footings based on stress history from VS measurements

  • Cho, Hyung Ik (Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Han Saem (Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Sun, Chang-Guk (Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Dong Soo (Department of Civil and Environmental Engineering, Korea Advanced Institute for Science and Technology)
  • Received : 2018.11.02
  • Accepted : 2020.02.05
  • Published : 2020.03.10
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Abstract

A settlement prediction method based on shear wave velocity measurements and soil nonlinearity was recently developed and verified by means of centrifuge tests. However, the method was only applicable to heavily overconsolidated soil deposits under enlarged yield surfaces. In this study, the settlement evaluation method was refined to consider the stress history of the sublayer, based on an overconsolidation ratio evaluation technique, and thereby incorporate irrecoverable plastic deformation in the settlement calculation. A relationship between the small-strain shear modulus and overconsolidation ratio, which can be determined from laboratory tests, was adopted to describe the stress history of the subsurface. Based on the overconsolidation ratio determined, the value of an empirical coefficient that reflects the effect of plastic deformation over the elastic region is determined by comparing the overconsolidation ratio with the stress increment transmitted by the surface design load. The refined method that incorporate this empirical coefficient was successfully validated by means of centrifuge tests, even under normally consolidated loading conditions.

Keywords

Acknowledgement

Supported by : Korea Institute of Geoscience and Mineral Resources (KIGAM)

This research was supported from Basic Research Project of Korea Institute of Geoscience and Mineral Resources (KIGAM).

References

  1. Becker, D.E., Crooks, J.H.A., Been, K. and Jefferies, M.G. (1987), "Work as a criterion for determining in situ and yield stresses in clays", Can. Geotech. J., 24(4), 549-564. https://doi.org/10.1139/t87-070.
  2. Burland, J.B. and Burbidge, E. (1985), "Settlement of foundations on sand and gravel", Proc. Inst. Civ. Eng., 76, 1325-1381. https://doi.org/10.1680/iicep.1985.1058.
  3. Burland, J.B. (1990), "On the compressibility and shear strength of natural clays", Geotechnique, 40(3), 329-378. https://doi.org/10.1680/geot.1990.40.3.329.
  4. Casagrande, A. (1936), "Determination of preconsolidation load and its practical significance", Proceedings of the 1st International Conference on Soil Mechanics and Foundation Engineering, Cambridge, Massachusetts, U.S.A., June.
  5. Cho, G.C., Dodds, J. and Santamarina, J.C. (2006), "Particle shape effects on packing density, stiffness, and strength: Natural and crushed sands", J. Geotech. Geoenviron. Eng., 132(5), 591-602. https://doi.org/10.1061/(ASCE)1090-0241(2006)132:5(591).
  6. Cho, H.I., Park, H.J., Kim, D.S. and Choo, Y.W. (2014), "Evaluation of Ko in centrifuge model using shear wave velocity", Geotech. Test. J., 37(2), 255-267. https://doi.org/10.1520/GTJ20130060.
  7. Cho, H.I., Kim, N.R., Park, H.J. and Kim, D.S. (2017), "Settlement prediction of footings using VS", Appl. Sci., 7(11), 1105. https://doi.org/10.3390/app7111105.
  8. Cho, H.I., Sun, C.G., Kim, J.H. and Kim, D.S. (2018), "OCR evaluation of cohesionless soil in centrifuge model using shear wave velocity", Geomech. Eng., 15(4), 987-995. https://doi.org/10.12989/gae.2018.15.4.987.
  9. Choo, H. and Burns, S.E. (2014), "Effect of overconsolidation ratio on dynamic properties of binary mixtures of silica particles", Soil Dyn. Earthq. Eng., 60, 44-50. https://doi.org/10.1016/j.soildyn.2014.01.015.
  10. Clayton, C.R.I., Hababa, M.B. and Simons, N.E. (1985), "Dynamic penetration resistance and the prediction of the compressibility of a fine-grained sand - a laboratory study", Geotechnique, 35(1), 19-31. https://doi.org/10.1680/geot.1985.35.1.19.
  11. Fahey, M. (1992), "Shear modulus of cohesionless soil: Variation with stress and strain level", Can. Geotech. J., 29(1), 157-161. https://doi.org/10.1139/t92-017.
  12. Hardin, B.O. and Drnevich, V.P. (1972), "Shear modulus and damping in soils: Design equations and curves", J. Soil Mech. Found. Div., 98(sm7).
  13. Jamiolkowski, M. (1985), "New developments in field and laboratory testing of soil", Proceedings of the 11th International Conference on Soil Mechanics, San Francisco, California, U.S.A., August.
  14. Kim, J.H., Choo, Y.W., Kim, D.J. and Kim, D.S. (2015), "Miniature cone tip resistance on sand in a centrifuge", J. Geotech. Geoenviron. Eng., 142(3), 04015090. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001425.
  15. Kim, J.H., Cho, H.I., Park, H.J. and Kim, D.S. (2017), "Evaluation of soil state variation using bender elements within centrifuge models", Geotech. Test. J., 40(1), 150-159. https://doi.org/10.1520/GTJ20150139.
  16. Kim, N.R. and Kim, D.S. (2010), "A shear wave velocity tomography system for geotechnical centrifuge testing", Geotech. Test. J., 33(6), 434-444. https://doi.org/10.1520/GTJ102894.
  17. Leonards, G.A. and Frost, J.D. (1988), "Settlement of shallow foundations on granular soils", J. Geotech. Eng., 114(7), 791-809. https://doi.org/10.1061/(ASCE)0733-9410(1988)114:7(791).
  18. Lo Presti, D.C.F. (1989), "Proprieta dinamiche dei terreni[Dynamic properties of soils]", Proceedings of the 14th Conference on Geotechnics Torino, Department of Structural Engineering, Politecnico di Torino, Turin, Italy (in Italian).
  19. Martin, C.L., Bouvard, D. and Shima, S. (2003), "Study of particle rearrangement during powder compaction by the discrete element method", J. Mech. Phys. Solids, 51(4), 667-693. https://doi.org/10.1016/S0022-5096(02)00101-1.
  20. Mayne, P.W. and Kulhawy, F.H. (1982), "Ko-OCR relationships in soil", J. Soil Mech. Found. Div., 108(6), 851-872.
  21. Mayne, P.W. and Poulos, H.G. (1999), "Approximate displacement influence factors for elastic shallow foundations", J. Geotech. Geoenviron. Eng., 125(6), 453-460. https://doi.org/10.1061/(ASCE)1090-0241(1999)125:6(453).
  22. Mesri, G. and Vardhanabhuti, B. (2009), "Compression of granular materials", Can. Geotech. J., 46, 369-392. https://doi.org/10.1139/T08-123.
  23. Mir, M., Bouafia, A., Rahmani, K. and Aouali, N. (2017), "Analysis of load-settlement behaviour of shallow foundations in saturated clays based on CPT and DPT tests", Geomech. Eng., 13(1), 119-139. https://doi.org/10.12989/gae.2017.13.1.119.
  24. Roesler, S.K. (1979), "Anisotropic shear modulus due to stress-anisotropy", J. Geotech. Eng. Div., 105(GT7), 871-880. https://doi.org/10.1061/AJGEB6.0000835
  25. Schanz, T., Vermeer, P.A. and Bonnier, P.G. (1999), The Hardening Soil Model: Formulation and Verification, in Beyond 2000 in Computational Geotechnics, 281-296.
  26. Schmertmann, J.H. (1970), "Static cone to compute static settlement over sand", J. Soil Mech. Found. Div., 96, 1011-1043. https://doi.org/10.1061/JSFEAQ.0001418
  27. Schmertmann, J.H., Brown, P.R. and Hartman, J.P. (1978), "Improved strain influence factor diagrams", J. Geotech. Eng. Div., 104, 1131-1135. https://doi.org/10.1061/AJGEB6.0000683
  28. Tasiopoulou, P., Taiebat, M., Tafazzoli, N. and Jeremic, B. (2015), "On validation of fully coupled behavior of porous media using centrifuge test results", Coupled Syst. Mech., 4(1), 37-65. http://dx.doi.org/10.12989/csm.2015.4.1.037.
  29. Umar, M. and Sadrekarimi, A. (2016), "Accuracy of determining pre-consolidation pressure from laboratory tests", Can. Geotech. J., 54(3), 441-450. https://doi.org/10.1139/cgj-2016-0203.
  30. Yoon, H.K., Lee, C., Kim, H.K. and Lee, J.S. (2011), "Evaluation of preconsolidation stress by shear wave velocity", Smart Struct. Syst., 7(4), 275-287. http://doi.org/10.12989/sss.2011.7.4.275.
  31. Yu, P. and Richart, F. (1984), "Stress-ratio effects on shear modulus of dry sands", J. Geotech. Eng. Div., 110(3), 331-345. https://doi.org/10.1061/(ASCE)0733-9410(1984)110:3(331).

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