What is it about?
Based on on site dynamic measurements, the basic parameters governing seismic response of the leaning tower have been identified, taking into account soil structure interaction (SSI). It is noted that SSI , the greatest ever measured on civil structures, has a fundamental role on seismic response and determined significantly to tower survival in good shape for more than seven centuries. The parameters for the foundation impedence terms have been calibrated in vertical direction too.
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Why is it important?
It is noted that SSI , the greatest ever measured on civil structures, has a fundamental role on seismic response and determined significantly to tower survival in good shape for more than seven centuries.
Perspectives
The deep soil effect had never been measured in Pisa. It was the first time that measure of the soil down to 100 meters had been taken. Future work will include even deeper measurement and a more accurate evaluation of the structural response of the tower. The composition of the research team where different expertises took place, permitted to investigate different aspects never considered before.
prof Camillo Nuti
Università degli studi di Roma Tre, Dipartimento di Architettura
Read the Original
This page is a summary of: Seismic Reassessment of the Leaning Tower of Pisa: Dynamic Monitoring, Site Response, and SSI, Earthquake Spectra, May 2019, SAGE Publications,
DOI: 10.1193/021518eqs037m.
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