“Bearing and vibration alleviation devices have a broad range of applications in the design of damage-free & resilient structures spanning from buildings to bridges, nuclear power plants, artefacts, heritage structures and machines. The integrity of these structures relies heavily on the response of these devices. Thus, it is important to develop detailed models capable of capturing their behavior under multiple extreme loads such as earthquakes and wind loads.”

examples of bridge bearings (isolation)

On the basis of the expertise of the team, a range of research results have strengthened the understanding around bearings used in bridge and building constructions and in particular:

  • design of bridges with bearings
  • interaction of shear and axial loading of bearings & bearing uplift
  • preliminary design of isolated structures & software development
  • testing & certification of bearings

bridge pier rotation excerting bearing uplift

modelling of bearing vertical response

bearing axial stresses under combined shear and axial loads

evolution of axial stresses (abaqus non-linear modelling)

Revelant publications:

  1. Kalfas K, Mitoulis SA, Konstantinidis D (2020) Influence of steel reinforcement on the performance of elastomeric bearings. ASCE Journal of Structural Engineering, 146(10): 04020195. DOI:10.1061/(ASCE)ST.1943-541X.0002710
  2. Tubaldi E, Mitoulis S, Ahmadi H (2018). Comparison of different models for high damping rubber bearings in seismically isolated bridges, Soil Dynamics and Earthquake Engineering 104 (2018) 329–345
  3. Kalfas KN, Mitoulis SA (2017). Performance of steel-laminated rubber bearings subjected to combinations of axial loads and shear strains. Procedia Engineering 199, 2979–2984, DOI: 10.1016/j.proeng.2017.09.533.
  4. Kalfas K, Mitoulis S, Katakalos (2017). Numerical study on the response of steel-laminated elastomeric bearings subjected to variable axial loads and development of local tensile stresses. Engineering Structures, Vol. 134, 346-357.
  5. Mitoulis SA (2015). Uplift of elastomeric bearings in isolated bridges subjected to longitudinal seismic excitations, Structure and Infrastructure Engineering: Maintenance, Management, Life-Cycle Design and Performance Vol.11, No.12.

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