Geotechnical Earthquake Engineering and Soil Dynamics V
A Centrifuge Study of the Influence of Dense Granular Columns on the Performance of Gently Sloping Liquefiable Sites
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
Dense granular columns are commonly used to reduce the risk of liquefaction or its associated ground deformations in gentle slopes through: 1) enhancing drainage; 2) providing shear reinforcement; and 3) densifying and increasing lateral stresses in the surrounding soil during installation. However, the independent influence and contribution of these mitigation mechanisms on excess pore pressures, accelerations, and lateral and vertical deformations is not sufficiently understood to facilitate reliable design. This paper presents the results of a series of dynamic centrifuge tests to evaluate the influence of dense granular columns on the seismic performance of gentle slopes (e.g. <5%). Granular columns with greater area replacement ratios (Ar about 20%) were shown to be highly effective in reducing seismic settlement and lateral slope deformations, owing primarily to expedited dissipation of excess pore water pressures rather than shear reinforcement. The influence of granular columns on accelerations in the surrounding soil depended on the column’s Ar and drainage capacity. The insight from these experiments aims to improve our understanding of the mechanics of liquefaction and lateral spreading mitigation with granular columns.
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REFERENCES
Adalier, K., Elgamal, A., Meneses, J., Baez, I.J., (2003). “Stone columns as liquefaction counter-measure in non-plastic silty soils.” J. of Soil Dynamics and Earthquake Eng. 23 (7), 571– 584.
Ansal, A., Bardet, J.P., Barka, A., Baturay, M.B., Berilgen, M., Bray, J., Cetin, O., Clu, L., Durgunoglu, T., Erten, D., Erdik, M., Idriss, I.M., Karadayilar, T., Kaya, A., Lettis, W., Olgun, G., Paige, W., Rathje, E., Roblee, C., Stewart, J., Ural, D., 1999. Initial Geotechnical Observations of the November 12, 1999, Duzce Earthquake. A Report of the Turkey–US Geotechnical Earthquake Engineering Reconnaissance Team.
Asgari, A., Oliaei, M., Bagheri, M., 2013: ‘Numerical simulation of improvement of a liquefiable soil layer using stone column and pile pinning techniques’, J. of Soil Dynamics and Earthquake Eng. 51(2013)77–96.
Bardet, J.P., Oka, F., Sugito, M., Yashima, A., 1995. The Great Hanshin Earthquake disaster. Preliminary Investigation Rep., Dept. of Civil Engineering Univ. of Southern California, Los Angeles.
Elgamal, A., Lu, J. and Forcellini, D. (2009). "Mitigation of liquefaction-induced lateral deformation in a sloping stratum: three-dimensional numerical simulation," J. of Soil Dynamics and Earthquake Eng. ASCE, 135(11), 1672-1682.
Garnier, J., Gaudin, C., Springman, S.M., Culligan, P.J., Goodings, D., Konig, D., Kutter, B., Phillips, R., Randolph, M.F., Thorel, L. (2007). “Catalogue of scaling laws and similitude questions in centrifuge modeling. Intern. J. of Phy. Mod. In Geotech., 7(3), 1-24
Ishihara, K., Haeri, S.M., Moinfar, A.A., Towhata, I., Tsujino, S., 1992. Geotechnical aspects of the June 20, 1990 Manjil Earthquake in Iran. Soils and Foundations 32 (3), 61– 78.
Krinitzsky, E.L., Hynes, M.E., 2002. The Bhuj, India, earthquake: lessons learned for earthquake safety of dams on alluvium. Engineering Geology 66 (3– 4), 163– 196.
Stringer, M., & Madabhushi, S. (2009). “Novel computer-controlled saturation of dynamic centrifuge models using high viscosity fluids.” Geotechnical Testing Journal, 32(6), 559-564.
Rayamajhi, D., Ashford, S. A., Boulanger, R. W., and Elgamal, A. (2016). “Dense granular columns in liquefiable ground. I: Shear reinforcement and cyclic stress ratio reduction.” J. of Soil Dynamics and Earthquake Eng., vol. 142, no. 7, pp. 4016023.
Seed, R.B., Dickenson, S.E., Riemer, M.F., Bray, J.D., Sitar, N., Mitchell, J.K., Idriss, I.M., Kayen, R.E., Kropp, A., Hander L.F., Jr., Power, M.S., 1990. Preliminary report on the principal geotechnical aspects of the October 17, 1989, Loma Prieta Earthquake. Rep. No. UCB/EERC-90/05, Earthquake Eng. Research Center, U. of California, Berkeley, Calif.
Stewart, D. P., Chen, Y. R., and Kutter, B. L. (1998) “Experience with the Use of Methylcellulose as a Viscous Pore Fluid in Centrifuge Models.” Geotechnical Testing Journal, GTJODJ, 21(4): 365-369.
Tan, T. S. and Scott, R. F. (1985). “Centrifuge scaling considerations for fluid-particle systems.” Geotechnique 35(4), 461–470.
Taylor, R. N. (1995). Geotechnical centrifuge technology, 1st Ed., Blackie Academic and Professional. New York; London.
Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 33 - 40
Editors: Scott J. Brandenberg, Ph.D., University of California, Los Angeles, and Majid T. Manzari, Ph.D., George Washington University
ISBN (Online): 978-0-7844-8145-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 7, 2018
ASCE Technical Topics:
- Business management
- Centrifuges
- Construction equipment
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Equipment and machinery
- Geomechanics
- Geotechnical engineering
- Granular materials
- Lateral pressure
- Materials engineering
- Mitigation and remediation
- Practice and Profession
- Pressure (type)
- Seismic tests
- Slope stability
- Slopes
- Soil dynamics
- Soil liquefaction
- Soil mechanics
- Soil properties
- Soil stabilization
- Solid mechanics
- Tests (by type)
Authors
Metrics & Citations
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