Earthquake Engineering

One of the main objectives of the Earthquake Engineering Division of ITSAK is applied research on the mitigation of the destructive results of strong earthquakes on structures. Among the various research fields within this framework, one can mention: Investigation of the dynamic behaviour of structures, structural members, materials and devices under seismic loads. The particular characteristics of seismic excitations and their role on structural response. Research on the seismic strength of typical structural systems used in Greece and modification proposals for improved performance. Investigation and documentation of earthquake damage to existing structures. Development of methodologies for seismic strength assessment and repair/ strengthening of structures suffering earthquake damage. Analytical and experimental investigation and validation of design procedures of structures in seismic-prone areas which are characterized as important, either due to their repeatability (e.g. multiple building compounds) or due to their special character (e.g. tall buildings, bridges, tanks, silos, lifelines etc). Contribution to the development of new seismic code provisions. Contribution to the development/updating of civil earthquake protection plans of populated areas dealing with aspects of seismic strength and vulnerability of structures. Development of electronic databases for use in the research activities of the Division.

In recent years, the Earthquake Engineering Department is particularly active in the following fields, in many cases in collaboration with the other scientific divisions of ITSAK as well as other research centres and Universities within the framework of EC and Nationally funded research programs:

1. Instrumentation of structures with special arrays:  Assessment of actual dynamic characteristics / F.E.M. updating / damage detection based on recorded response of the structure.
2. Methodologies for the assessment of seismic vulnerability of existing structures / Development of seismic risk scenarios for urban centers.
3. Updating of seismic code provisions / Assessment of pre- and post-event inspections and interventions to existing buildings
4. Damage to buildings ; Assessment of repair / strengthening interventions after an earthquake
5. Theoretical / analytical investigations on :

• Inelastic analysis methods of the dynamic response of structures to earthquakes.
• Assessment of factors leading to damage in reinforced concrete and masonry structures.
• Efficiency of various strengthening / repair methodologies for reinforced concrete elements

Development of new efficient finite and stochastic boundary elements for modelling the dynamic behaviour of buildings, bridges and underground structures.