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Effect of anisotropy and destructuration on behavior of Haarajoki test embankment

Yildiz, Abdulazim and Karstunen, Minna and Krenn, Harald, University of Cukurova, University of Strathclyde, INSOND Spezialtiefbau, Ges.m.b.H, EC MRTN-CT-2004-512120 (Funder), Academy of Finland (Grant 210744) (Funder), TUBITAK (Funder) (2009) Effect of anisotropy and destructuration on behavior of Haarajoki test embankment. International Journal of Geomechanics, 9 (4). pp. 153-168. ISSN 1532-3641

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Abstract

This paper investigates the influence of anisotropy and destructuration on the behavior of Haarajoki test embankment, which was built by the Finnish National Road Administration as a noise barrier in 1997 on a soft clay deposit. Half of the embankment is constructed on an area improved with prefabricated vertical drains, while the other half is constructed on the natural deposit without any ground improvement. The construction and consolidation of the embankment is analyzed with the finite-element method using three different constitutive models to represent the soft clay. Two recently proposed constitutive models, namely S-CLAY1 which accounts for initial and plastic strain induced anisotropy, and its extension, called S-CLAY1S which accounts, additionally, for interparticle bonding and degradation of bonds, were used in the analysis. For comparison, the problem is also analyzed with the isotropic modified cam clay model. The results of the numerical analyses are compared with the field measurements. The simulations reveal the influence that anisotropy and destructuration have on the behavior of an embankment on soft clay.