||Please provide a short description of the state-of-the-art and/or current trends in the field? How does the result fit into it?
|It is well known that strong ground motion is conditioned by site effects. They have been proved to affect seriously both the intensity and the frequency content of the ground motion. The importance and the complexity of site effects estimation led to the development of “test sites”; sites where detailed observations of the variations of site response could be related to the subsoil structure determined from a thorough geophysical and geotechnical exploration surveys. In this sense, the fundamental prerequisite to interpret instrumental observations of earthquakes and to simulate strong ground motion is the good knowledge of the geological structure in terms of an “input” benchmark soil model. This actually implies the knowledge of the geometry of the main geologic formations in the studied area, as well as their main geo-dynamic properties from the free surface down to the sediments – bedrock interface and their spatial distribution in the whole basin. The effect of the surface geology in the ground motion is commonly referred to as “site effects”.
Moreover, the response of a structure when subjected to dynamic type loading (i.e. earthquake, machine induced vibration, railway induced vibration etc) depends on the interaction of the structure with the underlying soil beneath the foundation. Even though analytical and numerical simulation of the interaction phenomenon is currently becoming a typical procedure, the experimental validation of the numerical simulation results in large scale testing facilities is still cumbersome.
EUROSEIS is a European multi-purpose large physical laboratory (test-site) established in the Mygdonian basin, near Thessaloniki, in Northern Greece. It is one of the longest running test sites in the world, aiming to allow detailed and well documented studies in many fields of Engineering Seismology, Earthquake Engineering, Soil Dynamics and Seismology, open to the scientific community. Emphasis is given to the experimental and theoretical analysis of site effects, on the development of new technology and innovative methods to assess the dynamic soil properties and on numerical and stochastic methods in geotechnical earthquake engineering. It is a unique large scale test site, allowing combined geophysical, geotechnical and structural experimental surveys.
The test site is in operation since 1993 under the responsibility of the research unit of Soil Dynamics and Geotechnical Earthquake Engineering (SDGEE) of the laboratory of Soil Mechanics, Foundation and Geotechnical Earthquake Engineering of AUTH. During its operation, a large number of universities and institutes from all over the world have been involved in its activities and more than 200 scientific papers, based on EUROSEIS data and results, have been published in journals and proceedings of scientific conferences.
||What is the problem/need/knowledge gap that the research result is responding to? How was it addressed before?
|The very few existing large scale testing sites are used for either solely the geophysical and geotechnical survey, or merely the structural exploitation. No large scale test-site exists worldwide, providing the facilities to perform combined geophysical, geotechnical, seismological and structural surveys.
EUROSEIS provides the end user with the unique possibility of combined geophysical, geotechnical and structural experimental survey. Had the end user the need to study the above mentioned phenomena experimentally, he/she were obliged to perform separate experiments in well distinguished test sites.
||What is the potential for further research?
|EUROSEIS large scale multi-purpose test site can be used for further research on the field of geophysical and geotechnical engineering, site effect, topographic effects, strong ground motion, soil dynamics and dynamics of structures. Most important however, the combined action of the afore mentioned fields can be further exploited.
||What is the proposed method of IPR-protection? (patent, license, trademark etc.)
|EUROSEIS research experiments do not require specific IPR-protection policies, except those prescribed by the scientific deontology.
||What are the steps that need to be taken in order to secure the IPR-protection? What is the cost of IPR-protection?
|No specific cost of IPR-protection is required
||What is your overall assessment of the scientific maturity of the research result?
|EUROSEIS is a European multi-purpose large physical laboratory (test-site) providing the end user with the possibility to perform combined seismological, geophysical, geotechnical and structural response surveys.
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