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PRODID:-//Khalifa University - ECPv4.9.13//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Khalifa University
X-ORIGINAL-URL:https://www.ku.ac.ae
X-WR-CALDESC:Events for Khalifa University
BEGIN:VTIMEZONE
TZID:Asia/Dubai
BEGIN:STANDARD
TZOFFSETFROM:+0400
TZOFFSETTO:+0400
TZNAME:+04
DTSTART:20210101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Dubai:20210520T140000
DTEND;TZID=Asia/Dubai:20210520T150000
DTSTAMP:20260425T184530
CREATED:20210516T073313Z
LAST-MODIFIED:20210516T073313Z
UID:53255-1621519200-1621522800@www.ku.ac.ae
SUMMARY:CIVE Webinar: The Remarkable Seismic Stability of the Leaning Tower of Pisa - New Findings
DESCRIPTION:The Tower of Pisa has survived undamaged from several strong earthquakes over the last 650 years – despite its severe inclination and limited ductility. No credible explanation for this remarkable seismic performance exists to date. A re-assessment of this unique case history in light of new seismological\, geological\, structural\, and geotechnical information will be presented\, aiming to address this question. The following topics will be discussed: (1) dynamic structural identification based on recorded earthquake data; (2) geophysical site characterization using an extended two-dimensional array; (3) seismic hazard and site response analysis considering horizontal and vertical motions; and (4) soil-structure interaction (SSI) analysis calibrated using lab and field data. A substantial shift in natural period\, from about 0.35 seconds to over 1 second (a threefold increase – the largest known for a structure of such height) caused by SSI\, a wave parameter (1∕σ) of about 0.3\, and a minor effect of vertical ground motion are identified and may explain the lack of earthquake damage on the Tower. Recommendations for future research\, including the need to establish a seismic bedrock deeper than 500m\, will be provided. \n
URL:https://www.ku.ac.ae/event/cive-webinar-the-remarkable-seismic-stability-of-the-leaning-tower-of-pisa-new-findings
LOCATION:Virtual
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