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The Effect of Preloading on the Cyclic Liquefaction Strength Measured in the Laboratory
Konstantinos Stamatopoulos
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DOI:10.17265/1934-7359/2024.06.002
Stamatopoulos and Associates, 5 Isavron Street, Athens 11471, Greece
The effect of preloading on the liquefaction cyclic strength was investigated by cyclic shear tests where horizontal shear stress oscillated about a zero mean value on sands with varying fines content and at varying prestress ratios, densities and vertical stresses. Test results showed a marked increase of the cyclic soil strength with the prestress ratio. The effect is more pronounced for the looser specimens. An empirical expression predicting this effect is proposed. This expression is validated from results of a field test.
Cyclic liquefaction, shear stress, field test.
Journal of Civil Engineering and Architecture 18 (2024) 269-275 doi: 10.17265/1934-7359/2024.06.002
[1] European Standard. 2003. Eurocode 8: Design of Structures for Earthquake Resistance. prEN 1998-5, December.
[2] Seed, H. B. 1979. “Soil Liquefaction and Cyclic Mobility Evaluation for Level Ground during Earthquakes.” Journal of Geotechnical Engineering 105 (2): 201-55.
[3] Committee on Earthquake Engineering, Commission on Engineering and Technical Systems, National Research Council. 1985. Liquefaction of Soils during Earthquakes. Washington, D.C.: National Academy Press.
[4] Stamatopoulos, A. C., and Kotzias, P. C. 1985. Soil Improvement by Preloading. New York: John Wiley & Sons.
[5] Ishihara, K. 1996. Soil Behaviour in Earthquake Geotechnics. Oxford, UK: Clarendon Press.
[6] Seed, H. B., and Peacock, W. H. 1971. “Test Procedures for Measuring Soil Liquefaction Characteristics.” Journal of the Geotechnical Engineering Division 97 (8): 1099-119.
[7] Ishihara, K., and Takatsu, H. 1979. “Effects of Overconsolidation and K0 Conditions on the Liquefaction Characteristics of Sands.” Soils and Foundations 19 (4): 59-68.
[8] Stamatopoulos, C., and Stamatopoulos, A. 2007. “Effect of Preloading on the Cyclic Strength of Reconstituted Sand.” Ground Improvement 11 (3): 145-55.
[9] Papadopoulou, A., and Tika, T. 2008. “The Effect of Fines on Critical State and Liquefaction Resistance Characteristics of Non-plastic Silty Sands.” Soils & Foundations 48 (5): 713-25.
[10] Stamatopoulos, C., Balla, L., and Allkja, S. 2013. “Improvement of Dynamic Soil Properties Induced by Preloading Measured in the Field.” In Proceedings of the 2nd International Balkans Conference on Challenges of Civil Engineering (BCCCE), 23-25 May 2013, EPOKA University, Tirana, Albania.