Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/22657
Title: The Equivalent Modulus of Elasticity of Soil Mediums for Designing Shallow Foundations
Authors: Pantelidis, Lysandros 
Major Field of Science: Engineering and Technology
Field Category: Civil Engineering
Keywords: Equivalent modulus of elasticity;Mat foundations;Shallow foundations;Soil-structure interaction;Stratified soil;Winkler’s spring method
Issue Date: Jun-2021
Source: Geotechnical and Geological Engineering, 2021, vol. 39, no. 5, pp. 3863 - 3873
Volume: 39
Issue: 5
Start page: 3863
End page: 3873
Journal: Geotechnical and Geological Engineering 
Abstract: As known, in a Winkler type of analysis the soil medium underneath the foundation is violently replaced by a row of parallel springs having constant ks. For the effective calculation of the latter, which is called the modulus of subgrade reaction, the two elastic constants of the soil (the elastic modulus, E and the Poisson’s ratio, ν) must be known. Although for homogenous soils this generally seems not to be a problem, the same does not stand for stratified mediums or mediums with linearly increasing modulus with depth. In addition, in a Winkler type of analysis, the proper pair of elastic constant values of soil should be selected. This refers to a Poisson’s ratio value equal to zero corresponding to the deformation pattern of springs (compression with no lateral expansion) and the respective modulus. In the present paper a method for calculating the equivalent elastic constants for the above mentioned mediums is proposed based on the theory of elasticity combining the principle of superposition. Various cases are considered, since the equivalent modulus, Eeq, depends on the rigidity and the shape of the footing. As shown, the derived Eeq values not only return reliable settlement results, but also settlement profiles that are similar to those corresponding to the original soil mediums.
URI: https://ktisis.cut.ac.cy/handle/10488/22657
ISSN: 1573-1529
DOI: 10.1007/s10706-021-01732-z
Rights: © The Author(s)
Attribution-NonCommercial-NoDerivatives 4.0 International
Type: Article
Affiliation : Cyprus University of Technology 
Appears in Collections:Άρθρα/Articles

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