Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Liquefaction Behaviour of Saturated Silty Sand Under Monotonic Loading Conditions

정적하중 상태에서 포화된 실트질 모래의 액상화 거동

  • 이달원 (충남대학교 농업생명과학대학 지역환경토목전공)
  • Published : 2006.07.01
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Abstract

This study was carried out to investigate the liquefaction behaviour of saturated silty sand under monotonic loading conditions. The undrained soil tests were conducted using a modified triaxial cell and specimens were prepared using the moisture tamping method. Undrained triaxial compression tests were performed at different confining pressures, void ratios and overconsolidation ratios and the samples were sheared to axial strains of about 20% to obtain monotonic loading conditions. It is shown that increasing confining pressures, void ratios and overconsoildation ratios increases the deviator stress, but it has no effect on increasing the dilatant tendencies. It is shown that complete static liquefaction was observed regardless of increases in the confining pressure, void ratio and overconsolidation ratio. Therefore, the confining pressure, void ratio and overconsoildation ratio does not provide significant effects on the liquefaction resistance of the silty sand. The presence of fines in the soil was shown to greatly increase the potential for static liquefaction and creates a particle structure with high compressibility for all cases.

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References

  1. Amini, F. and G. Z. Oi, 2000, Liquefaction testing of stratified silty sands, J. of Geotechnical and Geoenvironmental Engineering. ASCE, 126 (3): 208-217 https://doi.org/10.1061/(ASCE)1090-0241(2000)126:3(208)
  2. Atigh, E. and P. M. Byrne, 2004, Liquefaction flow of submarine slopes under partially undrained conditions: an effective stress approach, Can. Geotech. J. 41(1): 154-165 https://doi.org/10.1139/t03-079
  3. Grozic, J. L., P. K. Robertson and N. R. Morgenstern, 1999, The behavior of loose gassy sand, Can. Geotech. J. 36 (3): 482-492 https://doi.org/10.1139/cgj-36-3-482
  4. Ishihara, K., 1993, Liquefaction and flow failure during earthquakes, Geotechinque. 43 (3): 351-415 https://doi.org/10.1680/geot.1993.43.3.351
  5. Kramer, S. L. and H. B. Seed, 1988, Initiation of soil liquefaction under static loading conditions, Journal of Geotechnical Engineering. ASCE, 114 (4): 412-430 https://doi.org/10.1061/(ASCE)0733-9410(1988)114:4(412)
  6. Lade, P. V., 1993, Initiation of static instability in the submarine Nerlerk berm, Can. Geotech. J. 30: 895-904 https://doi.org/10.1139/t93-088
  7. Lade, P. V., 1994, Creep effects on static and cyclic instability of granular soils, J. of Geotech. Engrg. ASCE, 120(2): 404-419 https://doi.org/10.1061/(ASCE)0733-9410(1994)120:2(404)
  8. Lade, P. V. and 1. A. Yamamuro, 1997, Effects of nonplastic fines on static liquefaction of sands, Can. Geotech. J. 34 (6) : 918-928 https://doi.org/10.1139/cgj-34-6-918
  9. Pitman, T. D., P. K. Robertson and D. C. Sego, 1994, Influence of fines on the collapse of loose sands, Can. Geotech. J. 31: 728-739 https://doi.org/10.1139/t94-084
  10. Polito, C. P. and J. R. Martin II. 2001, Effect of nonplastic fines on the liquefaction resistance of sands, J. of Geotech. and Geoenviron. Engrg. ASCE, 127(5): 408-415 https://doi.org/10.1061/(ASCE)1090-0241(2001)127:5(408)
  11. Vaid, Y. P. and J. Thamas, 1995, Liquefaction and postliquefaction beha- vi or of sand, Journal of Geotechnical Engineering. ASCE, 121(2): 163-173 https://doi.org/10.1061/(ASCE)0733-9410(1995)121:2(163)
  12. Vaid, Y. P. and A. Eliadorani, 1998, Instability and liquefaction of granular soils under undrained and partially drained states, Can. Geotech. J. 35 (6): 1053-1062 https://doi.org/10.1139/cgj-35-6-1053
  13. Yamamuro, J. A. and P. V. Lade, 1997, Static liquefaction of very loose sands, Can. Geotech. J. 34 (6): 905-917 https://doi.org/10.1139/cgj-34-6-905
  14. Yamamuro, J. A. and P. V. Lade, 1998, Steady-state concepts and static liquefaction of silty sands, J. of Geotechnical and Geoenvironmental Engineering. ASCE, 124 (9) : 868-877 https://doi.org/10.1061/(ASCE)1090-0241(1998)124:9(868)
  15. Yamamuro, J. A. and P. V. Lade, 1999, Experiments and modeling of silty sands susceptible to static liquefaction. Mech. of Cohesive-Frictional Mat. 4 (6): 545-564 https://doi.org/10.1002/(SICI)1099-1484(199911)4:6<545::AID-CFM73>3.0.CO;2-O
  16. Yamamuro, J. A. and K. M. Covert, 2001, Monotonic and cyclic liquefaction of very loose sadns with high silt content, J. of Geotechnical and Geoenvironmental Engineering. ASCE, 127(4): 314-324 https://doi.org/10.1061/(ASCE)1090-0241(2001)127:4(314)