Elastic Foundation Displacement Approximations

Vytautas Kargaudas; Nerijus Adamukaitis; Mykolas Žmuida; Algis Pakalnis; Saulius Zadlauskas

doi:10.7250/bjrbe.2019-14.436

Elastic Foundation Displacement Approximations

Authors

Vytautas Kargaudas Civil Engineering and Architecture Competences Centre, Kaunas University of Technology, Kaunas, Lithuania
Nerijus Adamukaitis Civil Engineering and Architecture Competences Centre, Kaunas University of Technology, Kaunas, Lithuania
Mykolas Žmuida Civil Engineering and Architecture Competences Centre, Kaunas University of Technology, Kaunas, Lithuania
Algis Pakalnis Dept of Transport Engineering, Kaunas University of Technology, Kaunas, Lithuania
Saulius Zadlauskas Civil Engineering and Architecture Competences Centre, Kaunas University of Technology, Kaunas, Lithuania

DOI:

https://doi.org/10.7250/bjrbe.2019-14.436

Keywords:

additional pressure, continuum models, elastic foundation, spring–membrane system, surface displacements

Abstract

Interaction of an elastic foundation and structures like beams, plates and frames plays an essential role in investigating soil media in contact and impact mechanics. The solution to this interaction problem is complicated even the foundation is assumed as a linear elastic medium. E. Winkler suggested the fair representation of the foundation in 1867, and then, to bring it closer to reality, an interaction between the spring elements was introduced. In this paper, a relatively simple membrane-spring system is investigated, where an ideal gas is added under or above the membrane. In many cases, this constant pressure in the cavity modifies the solution and accuracy of the approximation is significantly increased. The cases of concentrated normal force and uniform distributed load are examined. The results of elastic half-space line displacements and the membrane displacements are presented.

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Elastic Foundation Displacement Approximations

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