Vol 7, No 1 (2016) > Civil Engineering >

The Dynamic Response of Unsaturated Clean Sand at a Very Low Frequency

Rini Kusumawardani, Kabul Basah Suryolelono, Bambang Suhendro, Ahmad Rifa'i

 

Abstract: A
series of cyclic triaxial tests at very low frequency was carried out on
unsaturated clean sand in order to quantitatively investigate the influence of
the degree of saturation on dynamic response. The conventional triaxial testing
apparatus, which is usually used on saturated soil, was employed to test the
unsaturated soil with the additional pore air pressure controller. During the
series of tests, four different degrees of saturation level (Sr =
55%, 70%, 85%, 98%) were applied to the soil specimen based on a single value
of effective confining pressure (σ’3). The results revealed that the
application of cyclic loading at a very low frequency occurring continuously
triggered the decrease of soil resistance. For degree saturation, Sr
= 55% revealed that the resistance of soil was stronger in comparison to
another level. Furthermore, the experimental results confirmed that applied cyclic loading induced a change in
saturation level before and after testing. In addition, at a certain level of saturation, a phenomenon of settlements was
likely to occur and the soil specimen then underwent liquefaction.
Keywords: Unsaturated clean sand; Undrained cyclic triaxial testing; Cyclic shear strain

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References


Atkinson, J.H., 2014. Fundamental of Ground Engineering, Taylor & Francais Group, England

Bian, H., Shahrour, I., 2009. Numerical Model for Unsaturated Sandy Soils under Cyclic Loading: Application to Liquefaction. Journal of Soil Dynamics and Earthquake Engineering, Volume 29, pp. 237–244

Bishop, A.W., 1959. The Principle of Effective Stress, Tecknisk Ukeflad

Das, B., 1992. Principle of Soil Dynamics, PWS-KENT Publishing Company, Boston

Dobry, R., Alvarez, L., 1967. Seismic Failures of Chilean Tailing Dams. Journal of the Soil Mechanics and Foundation Division, ASCE, Volume 102(9), pp. 909–927

Gupta, M.K., Agrawal, R.C., 1998. Seismotectonic and Liquefaction Studies of an Industrial Site in Northern India. Journal of Soil Dynamics and Earthquake Engineering, Volume 17, pp. 349–355

Fredlund, D.G., Rahardjo, H., 1993. Soil Mechanics and Unsaturated Soil, John Willey & Son, Inc., USA

Karakaş, A., Coruk, Ő., 2007. Liquefaction Analysis of Young Sediments in Western Part of Itzmit Basin. In: the Proceeding of International Earthquake Symposium Kocaeli 2007, pp. 494–498

Kazama, M., Uno, T., 2007. Earthquake-induced Mudflow Mechanism from a Viewpoint of Unsaturated Soil Dynamics, Experimental Unsaturated Soil Mechanics, Springer Proceeding in Physics, Volume 112 (part VII), pp. 437–444

Kramer, S.L., 1996. Geotechnical Earthquake Engineering, Prentice Hall Inc., Upper Saddle River, New Jersey, USA

Orense, R.P., Yoshimoto, N., Hyodo, M., 2012. Cyclic Shear Behavior and Seismic Response of Partially Saturated Slopes. Journal of Soil Dynamics and Earthquake Engineering, Volume 42, pp. 71–79

Pastor, M., Manzanal, D., Fernández Merodo, J.F., Mira, P., Blanc, T., Drempetic, V., Pastor, M.J., Haddad, B., Sanchez, M., 2010. From Solids to Fluidized Soils: Diffuse Failure Mechanisms in Geostructures with Applications to Fast Catastrophic Landslides. Journal of Granular Matter, Volume 12, pp. 211–228

Prakash, S., Puri, V.K., 2010. Recent Advances in Liquefaction of Fine Grained Soils. In: the Proceedings of the 5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics and Symposium in Honor of Professor M. Idriss, May 24-29, San Diego, California, USA

Sitharam, S.G., GovindaRaju, L., Sridharan, A., 2004. Dynamics Properties and Liquefaction Potential of Soils. Journal of Current Science, Volume 87(10), pp. 1370–1378

Skempton, A.W., 1960. Terzaghi’s Discovery of Effective Stress, from Theory to Practice in Soil Mechanics – Selections from the writings of Karl Terzaghi, John Wiley & Sons, New York, 42–53

Unno, T., Kazama, M., Uzuoka, R., Sento, N., 2006. Change of Moisture and Suction Properties of Volcanic Sand Induced by Shaking Disturbance. Journal of Soils and Foundations, Volume 46(4), pp. 519–528

Vucetic, M., Dobry, R., 1991. Effect of Soil Plasticity on Cyclic Response. Journal of Geotechnical Engineering, Volume 117(1), pp. 89-107

Wu, A., Sun, Y., 2008. Granular Dynamic Theory and Its Application. Metallurgical Industry Press, Beijing, China

Wulfsohn, D., Adams, B.A., Fredlund, D.G., 1998. Triaxial Testing of Unsaturated Agricultural Soils. Journal of Agricultural Engineering Research, Volume 69, pp. 317–330