Weighting functions for the stiffness of circular surface footings on multi-layered non-homogeneous elastic half-spaces under general loading

Stephen K. Suryasentana, Byron W. Byrne, Harvey J. Burd, Avi Shonberg

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

The classic contact problem of a rigid, rough circular surface footing bearing on a multi-layered non-homogeneous elastic half space was studied, leading to a simplified methodology for footing stiffness under six degrees-of-freedom loading that makes use of approximate weighting functions. The proposed methodology considers the effects of non-homogeneity by computing weighted average elastic parameters. These are then used as inputs to the stiffness solutions for a homogeneous elastic half-space. A key benefit of the proposed model is that it can handle both continuously varying and multi-layered non-homogeneity. The accuracy of the new method was evaluated by comparing its predictions against three-dimensional finite element analyses. The results of the study show that the proposed methodology can provide excellent predictions of the footing stiffness under general loading for most cases, except when there are stiff layers overlying softer layers.

Original languageEnglish
Pages2057-2060
Number of pages4
Publication statusPublished - 22 Sep 2017
Event19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017 - Seoul, Korea, Republic of
Duration: 17 Sep 201722 Sep 2017

Conference

Conference19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017
CountryKorea, Republic of
CitySeoul
Period17/09/1722/09/17

Keywords

  • circular
  • elastic
  • multi-layered
  • non-homogeneous
  • rigid
  • rough
  • stiffness
  • surface footing
  • torsion
  • weighting functions

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  • Cite this

    Suryasentana, S. K., Byrne, B. W., Burd, H. J., & Shonberg, A. (2017). Weighting functions for the stiffness of circular surface footings on multi-layered non-homogeneous elastic half-spaces under general loading. 2057-2060. Paper presented at 19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017, Seoul, Korea, Republic of.