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The frequency and damping of soil-structure systems with embedded foundation

Ghannad, M. A ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1063/1.2963895
  3. Publisher: 2008
  4. Abstract:
  5. The effect of foundation embedment on fundamental period and damping of buildings has been the title of several researches in three past decades. A review of the literature reveals some discrepancies between proposed formulations for dynamic characteristics of soil-embedded foundation-structure systems that raise the necessity of more investigation on this issue. Here, first a set of approximate polynomial equations for soil impedances, based on numerical data calculated from well known cone models, are presented. Then a simplified approach is suggested to calculate period and damping of the whole system considering soil medium as a viscoelastic half space. The procedure includes both material and radiation damping while frequency dependency of soil impedance functions is not ignored. Results show that soil-structure interaction can highly affect dynamic properties of system. Finally the results are compared with one of the commonly referred researches. © 2008 American Institute of Physics
  6. Keywords:
  8. Source: 2008 Seismic Engineering International Conference Commemorating the 1908 Messina and Reggio Calabria Earthquake, MERCEA 2008, Reggio Calabria, 8 July 2008 through 11 July 2008 ; Volume 1020, Issue PART 1 , 2008 , Pages 634-641 ; 0094243X (ISSN); 9780735405424 (ISBN)
  9. URL: https://aip.scitation.org/doi/abs/10.1063/1.2963895