NON LINEAR SEISMIC ANALYSIS OF ANCIENT BUILDINGS Structural Characterization for Succ

NON LINEAR SEISMIC ANALYSIS OF ANCIENT BUILDINGS Structural Characterization for Succ - Printable Version

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NON LINEAR SEISMIC ANALYSIS OF ANCIENT BUILDINGS Structural Characterization for Succ - TAFATNEB - 04-17-2014

NON LINEAR SEISMIC ANALYSIS OF ANCIENT BUILDINGS Structural Characterization for Successful Seismic Retrofit

Society’s social and cultural awareness for the importance of historic buildings is leading to a generalized effort for
preservation. Most ancient buildings desperately need retrofit in order to mitigate the effects of material aging, of intensive use
and of the pathologies resultant from natural disasters. The systemization of seismic retrofitting is the expected course of action. In Portugal, the implementation of the Eurocodes represents the first step towards the regulation of seismic retrofit of ancient wood and masonry buildings and it is being accompanied by the recovery of traditional constructive techniques, In the first part of this paper, a structural characterization of ancient buildings is established by studying its material properties, its building systems and its failure mechanisms. Afterwards, the most common strengthening methodologies are reviewed, specifying its employability according to its purpose’s fulfilment. For a successful design of seismic strengthening, the proceeding ought to be based on experimental and numerical studies. Thus, this paper mainly focuses on the assessment of ancient buildings’ non linear behaviour. Therefore, in the second part of
this paper, two walls of a 19th Century building in the city of Catania are idealized into equivalent frames. The numerical models designed are submitted to a non linear Static Pushover Analysis and to a non linear Incremental Dynamic Analysis.
The main purpose is to contribute to the development and discloser of a numerical model to easily and efficiently perform
non linear static and dynamic analyses of ancient masonry buildings, on current software (SAP2000 ®). The strengthening
design ought to be based on this sort of analyses.

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