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Experimental and Theoretical SFSI Studies in a Model Structure in Euroseistest

  • Kyriazis Pitilakis
  • Vasiliki Terzi
Chapter
Part of the Geotechnical, Geological and Earthquake Engineering book series (GGEE, volume 16)

Abstract

In the framework of a recent EU funded research project (EUROSEISRISK Seismic hazard assessment, site effects s soil-structure interaction studies in an instrumented basin), a bridge pier model was constructed, instrumented and tested in the EUROSEISTEST experimental site (http://euroseis.civil.auth.gr), located close to Thessaloniki in Greece. The prior aim is the experimental investigation of the dynamic characteristics of the model, the study of the soil-structure-interaction effects, and in particular the wave fields emanating from the oscillating structure to the surrounding ground; to accomplish this task a well-designed set of free-­vibration tests were conducted. Experimental results were compared with careful 3D numerical simulations of the soil-foundation structure system, in the frequency and time domain. Several fundamental aspects of SSI are discussed and the available analytical impedance expressions are compared with the experimental and numerical results of the present study. The study of the dynamic behavior of a simple SDOF system consisting of a model bridge pier with surface foundation in real soft soil conditions and the numerical FE modeling of the experiments, enable us to enhance our knowledge on various soil-structure interaction aspects.

Keywords

Ground Motion Body Wave Short Time Fourier Transform Foundation Slab Weak Axis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The research presented in this paper has been performed in the framework of the EU research program “Seismic hazard assessment, site effects and soil-structure interaction studies in an instrumented basin”, (EUROSEISRISK, EVG1-CT-2001-00040). Profound acknowledgments are due to professor George Manos who provided the model set up, and performed the free vibration tests. We also acknowledge the crucial contribution of assistant professor Dimitrios Raptakis and Dr. Maria Manakou, who were deployed the free field ground motion instrumentation and helped us in getting good quality records. The support of the Hellenic State Scholarships Foundation to the second author is also acknowledged.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Civil EngineeringAristotle UniversityThessalonikiGreece

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