Evaluasi Perilaku dan Viskositas Material Pasir Kelanauan pada Kondisi Terlikuifaksi dengan Menggunakan Piezocone
DOI:
https://doi.org/10.5614/jts.2024.31.3.7Keywords:
Liquefaction, viscosity, silty sand, piezoconeAbstract
Abstract
Liquefaction is phenomenon of the loss of shear strength of saturated sandy soil. Liquefaction has become one of the primary concerns for Indonesia and the world, especially after the occurrence of liquefaction in Palu due to Palu-Donggala earthquake. Learning from the liquefaction phenomena after the Palu-Donggala earthquake event on 28 September 2018, many researchers have conducted liquefaction and flow slide study. In order to complete the study of the liquefaction phenomenon, an experimental study using shake table, chamber, and piezocone is conducted to evaluate the behaviour and viscosity of liquefied silty sand material. Based on the observation during liquefied condition, the silty sand material will experience an increase in excess pore pressure and a decrease in tip resistance. In addition, it is also known that sleeve resistance, speed of penetration of the piezocone, and zone of influence due to piezocone penetration are the main keys in determining the viscosity of the silty sand material during liquefied condition
Keywords: Liquefaction, viscosity, silty sand, piezocone
References
Bellotti, R., Crippa, V., Pedroni, S., Baldi, G., Fretti, C., Ostricati, D., Ghionna, V., Jamiolkowski, M., dan Pasqualini, E., 1985, Laboratory validation of in situ tests, Geotechnical Engineering in Italy, an overview, A.G.I., ISSMFE Golden Jubilee.
Bojadjieva, J., Sesov, V., dan Edip, K., 2015, Experimental setup for sand liquefaction studies on shaking table, 6th International Conference on Earthquake Geotechnical Engineering, Christchurch, New Zealand.
Cooke, R. W., dan Price, G., 1973, Strains and displacements around frition piles, Proc. 8th International Conference on Soil Mechanics and Foundation Engineering, Moscow, Vol 2 (1), pp. 53-60.
Ishihara, K., 1993, Liquefaction and flow failure during earthquakes, Geotechnique, Vol. 43, Issue. 3,
pp. 351-451.
Jafarzadeh, F., 2004, Design and evaluatio concepts of laminar shear box for 1g shaking table tests, 13th World Conference on Earthquake Engineering, Vancouver, Paper No. 1391.
Jamiolkowski, M., Ladd, C. C., Germaine, J. T., dan Lancelotta, R., 1985, New developments in field and laboratory testing of soils, Proceedings of the 11th International Conference of Soil Mechanics and Foundation Engineering, San Fransisco, Vol. 1, pp. 57-154.
Jefferies, M. G., dan Been, K., 2006, Soil liquefaction - A critical state approach, Taylor and Francis, London.
Last, N., 1984, Seminar on cone penetration testing in the laboratory, University of Southampton, Department of Civil Engineering.
Mahajan, S. P., 2006, Viscous effects on penetrating shafts in clay, Ph.D. Dissertation, The University of Arizona.
Marsland, A. dan Quarterman, R.S.T., 1982, Factors affecting the measurements and interpretation of quasi static penetration tests in clays, Proc. 2nd European Symposium on Penetration Testing ESOPT II, A.A. Balkema, Amsterdam, pp. 697-702.
Parkin, A. K., Holden, J., Aaamot, K., Last, N., and Lunne, T., 1980, Laboratory investigations of CPT?s in sand, Norwegian Geotechnical Institute, Oslo, Report No. 52108-9.
Parkin, A. K., 1988, The calibration of cone penetrometers, Proceeding First International Symposium on Penetration Testing, Orlando, Florida.
Rahardjo, P. P., 1989, Evaluation of liquefaction potential silty sand based on cone penetration test, Ph.D. Dissertation, Virginia Polytechnic Insitute and State University.
Randolph, M. F., Carter, J. O., dan Wroth, C. P., 1979, Driven piles in clay ? the effects of installation and subsequent consolidation, Geotechnique, Vol. 29, Issue. 4, pp. 361-393.
Wu, J., Kammerer, A. M., Riemer, M. F., Seed, R. B., and Pestana, J. M., 2004, Laboratory study of liquefaction triggering criteria, 13th World Conference on Earthquake Engineering, Vancouver, Paper No. 2580.
