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Bulletin of Earthquake Engineering

, Volume 17, Issue 11, pp 5867–5895 | Cite as

Influence of structure–foundation–soil interaction on ground motions recorded within buildings

  • Dimitris SotiriadisEmail author
  • Nikolaos Klimis
  • Basil Margaris
  • Anastasios Sextos
Original Research
  • 210 Downloads

Abstract

The present work investigates the effect of soil–structure interaction (SSI) on foundation motion recorded at accelerometric stations installed at the lowest level of buildings. For this purpose, two sites of instrumented buildings, for which foundation and free-field strong motion recordings are available, are studied in terms of transfer functions as well as strong motion intensity and frequency content. The importance of such an instrumentation scheme is highlighted, especially when it comes to assessing the filtering action of the foundation on moderate to high frequency components of free-field motions. The effect of ground motion filtering at the soil–foundation interface is further quantified in terms of amplitude and frequency content. The recordings are supplemented by a parametric analysis of the sub-structured soil–structure system leading to regression expressions that associate the intensity and frequency parameters of the recordings obtained at the base of the instrumented buildings and the corresponding free-field ones. It is shown that kinematic and inertial decoupling of SSI is not only a useful but also a necessary task for correcting earthquake records obtained at building basements particularly for high frequency-dominated ground motions.

Keywords

Soil–structure interaction Strong motion recordings Embedded foundations Numerical sub-structuring 

Notes

Acknowledgements

The first author was financially supported by the General Secretariat for Research and Technology (GSRT) (Grant No. 941) and the Hellenic Foundation for Research and Innovation (HFRI). This support is highly appreciated. This research work was partially supported by the Scientific Project (HELPOS MIS 5002697).

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Civil EngineeringDemocritus University of ThraceXanthiGreece
  2. 2.Institute of Engineering Seismology and Earthquake Engineering (ITSAK-EPPO)ThessalonikiGreece
  3. 3.Department of Civil EngineeringUniversity of BristolBristolUK
  4. 4.Department of Civil EngineeringAristotle University of ThessalonikiThessalonikiGreece

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