Comparative Study of Methods of Determination of Coefficient of Subgrade Reaction
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Comparative Study of Methods of Determination of Coefficient of Subgrade Reaction
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Comparative Study of Methods of Determination of Coefficient of Subgrade Reaction

Author: Jamshid Sadrekarimi & Maryam Akbarzad | Size: 174 KB | Format: PDF | Quality: Original preprint | Publisher: The Electronic Journal of Geotechnical Engineering (EJGE) | Year: 2009 | pages: 14 | ISBN: Volume 14, 2009 — Bundle E



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Comparative Study of Methods of Determination of Coefficient of Subgrade Reaction

ABSTRACT
In this paper, different methods proposed for determination of the coefficient of subgrade reaction, ks are discussed, compared and evaluated for their suitability and accuracy. The geotechnical characteristics of a site on Tabriz Marl were selected as the base data and settlement analysis results with different methods were compared with that of obtained from analyses with advanced soil models using Safe and Plaxis software. It was discovered that for Tabriz Marl, soft soil model is the best governing model and Vesic relation among the methods of determination of ks leads to a negligible error in comparison to the soft soil model.
Also, in order to achieve more accurate results from these methods, it is proposed to use mean elasticity modulus which takes into account the effect of geometric and mechanical properties of sub-layers.
KEYWORDS: Winkler model, soft soil model, coefficient of subgrade reaction, modulus of elasticity, settlement.

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