Seismic Assessment of 19th Century Heritage Building Through Simulation

Abstract eng:
In light of the increasing interest in rehabilitation of heritage neoclassical buildings of the 19th and 20th Century in Greece, often restricted by international treaties for noninvasiveness and reversibility of the intervention and given the practical requirements for the buildings’ intended reuse, the present study focuses on the investigation of the parameters that affect the process of their seismic assessment through simulation. This class of loadbearing masonry buildings, which is also present in many European countries, are marked by carefully engineered configuration (layout in plan and elevation, systematic location of openings), that can lead to a specific type of seismic response. In the present paper, also investigated is the effect of horizontal diaphragm stiffness and connection to the walls; their contribution to dynamic response and appropriate methods of modelling are studied. Conclusions are calibrated based on comparative evaluation of the simulation results (obtained from detailed finite element modelling of a representative historic building located in the seismically active region of Thessaloniki) with the extent of actual damage patterns which have been observed due to strong earthquakes that have occurred during the buildings’ lifetime. The paper also presents a relatively simple analysis procedure that for this special class of buildings can produce very dependable results compared to those obtained from timeconsuming dynamic analyses, in a much easier and fast way.

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