Numerical simulation of the dynamic and earthquake behavior of Greek post-Byzantine churches with and without base isolation [chapter]

G. C. Manos, N. Karamitsios
2012 Retrofitting of Heritage Structures  
The dynamic and earthquake response of post-Byzantine stone masonry churches, subjected to a damaging earthquake sequence in the region of Western Macedonia in Greece, is examined. One of these "Basilica" form churches is analyzed numerically. The study extends to the behavior of a two-story box-type church with a simple orthogonal vault and a wooden roof, which belongs to an 11th century monastic-complex. These two structures are also combined and analyzed with a base isolation system. The
more » ... icted performance of the various structural elements, located at the peripheral masonry walls, is then checked by applying an assumed Mohr-Coulomb failure envelope that is believed to represent the limit-state stone-masonry behavior. The conceptual introduction of a base-isolation system was quite effective in lowering the demands and thus resulting in Capacity/Demand ratio values larger than one, which is assumed to indicate acceptable structural performance. However, the actual introduction of base isolation under an existing old stone-masonry structure faces considerable difficulties, despite the favorable results of the numerical modeling. For "The Virgin Mary of Tourniki" these difficulties must be addressed because this old church has been moved to a different location uphill due to flooding. Thus, introducing a base isolation scheme under this structure at its new location is a feasible solution in this particular case with no significant additional cost.
doi:10.2495/978-1-84564-754-4/15 fatcat:rvtbn2xxivc2vcijweat3srzma