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Deep compaction control of sandy soils

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Vibroflotation, vibratory compaction, micro-blasting or heavy tamping are typical improvement methods for the cohesionless deposits of high thickness. The complex mechanism of deep soil compaction is related to void ratio decrease with grain rear-rangements, lateral stress increase, prestressing effect of certain number of load cycles, water pressure dissipation, aging and other effects. Calibration chamber based interpretation of CPTU/DMT can be used to take into account vertical and horizontal stress and void ratio effects. Some examples of interpretation of soundings in pre-treated and compacted sands are given. Some acceptance criteria for compaction control are discussed. The improvement factors are analysed including the normalised approach based on the soil behaviour type index.
Rocznik
Strony
3--8
Opis fizyczny
Bibliogr. 15 poz., rys.
Twórcy
  • Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, Gdańsk, Poland, abal@pg.gda.pl
autor
Bibliografia
  • [1] SCHMERTMANN J.H., Dilatometer to compute foundation settlements, Proc. In-situ’86 GT Div., ASCE, June 23–25, Blacksburg, VA, 1986, 303–321.
  • [2] MESRI G., FENG T.W., BENAK J.M., Postdensification penetration resistance of clean sands, J. Geotech. Engng., ASCE, 1990, 116, 7, 1095–1115.
  • [3] SLOCOMBE B.C., BELL A.L., BAEZ J.I., The densification of granular soils using vibro methods, Géotechnique, 2000, 50, 6, 715–725.
  • [4] MASSARSCH K.R., FELLENIUS B.H., Vibratory compaction of coarse-grained soils, Can. Geotech. J., 2002, 39, 695– 709.
  • [5] MARCHETTI S., MONACO P., TOTANI G., CALABRESE M., The flat dilatometer test (DMT) in soil investigations, A report by the ISSMGE Committee TC16. Proc. In-situ 2001, Bali, May 21, 2001, 41 pages.
  • [6] LEE M.-J., CHOI S.-K., KIM M.-T., LEE W., Effect of stress history on CPT and DMT results in sand, Engineering Geology, 2011, 117, 259–265.
  • [7] GAMBIN M., Le pressiomètre Ménard, un excellent outils de côntrole d’amélioration des sols, 1995, Proc. Première Journée Louis Ménard, CMFS, Paris 1995.
  • [8] JAMIOLKOWSKI M., LO PRESTI D.C.F., MANASSERO M., Evaluation of relative density and shear strength of sand from CPT and DMT, C.C. LADD Symposium, M.I.T., Cambridge, Mass., October, 2001, 37.
  • [9] BAŁACHOWSKI L., KOZAK P., Compaction control at Gdynia Port with CPTU and DMT, Proc. of International Symposium of vibratory pile driving and deep soil vibratory compaction, Transvib, September, LCPC Paris 2006, 121–129.
  • [10] MARCHETTI S., In situ tests by flat dilatometer, Journal of the Geotechnical Engineering Division, ASCE, 1980, 106, 3, 299–321.
  • [11] DEBATS J.M., SCHARFF G., Robertson’s Soil Behaviour Type Index as a tool to measure the improvement of the ground in vibrocompaction works, André Frossard Prize, 2009.
  • [12] SCHNEIDER J.A., RANDOLPH M.F., MAYNE P.W., RAMSEY N.R., Analysis of factors influencing soil classification using normalized piezocone tip resistance and pore pressure parameters, Journal of geotechnical and geoenvironmental engineering, 2008, 134, 11, 1569–1586.
  • [13] ROBERTSON P.K., Interpretation of cone penetration tests – unified approach, Canadian Geotechnical Journal, 2009, 46, 1337–1355.
  • [14] CETIN K.O., OZAN C., CPT-based probabilistic soil characterization and classification, Journal of Geotechnical and Geoenvironmental Engineering, 2009, 135, 1, 84–107.
  • [15] LUNNE T., ROBERTSON P.K., POWELL J.J.M., Cone Penetration Testing in Geotechnical Practice, Blackie Academic and Professional, 1997.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-60dcda1e-22b9-4f1b-ac22-bce1ba2cc115
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