BEGIN:VCALENDAR VERSION:2.0 PRODID:-//jEvents 2.0 for Joomla//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VTIMEZONE TZID:America/Los_Angeles X-LIC-LOCATION:America/Los_Angeles BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:19700308T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:19701101T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:222339896f72fcfdc433a751499e518090 CATEGORIES:Other SUMMARY:ASCE-GI Orange County Chapter Dinner Meeting LOCATION:Ayres Hotel Costa Mesa\, 325 Bristol Street \, Costa Mesa, CA 92626\, USA DESCRIPTION:
Presented by: Dr . Robert Kayen of UCLA, UC Berkeley, and USGS
Shear-wave velocit
y (Vs) offers a means to determine the seismic resistance of soil to liquef
action by a fundamental soil property. Dr. Kayen will be presenting the res
ults of an 11-year international project to gather new Vs site data and dev
elop probabilistic correlations for seismic soil liquefaction occurrence. T
oward that objective, shear-wave velocity test sites were identified, and m
easurements made for 301 new liquefaction field case histories in China, Ja
pan, Taiwan, Greece, and the United States over a decade. The majority of t
hese new case histories reoccupy those previously investigated by penetrati
on testing. These new data are combined with previously published case hist
ories to build a global catalog of 422 case histories of Vs liquefaction pe
rformance. Bayesian regression and structural reliability methods facilitat
e a probabilistic treatment of the Vs catalog for performance-based enginee
ring applications. Where possible, uncertainties of the variables comprisin
g both the seismic demand and the soil capacity were estimated and included
in the analysis, resulting in greatly reduced overall model uncertainty re
lative to previous studies. The presented data set and probabilistic analys
is also help resolve the ancillary issues of adjustment for soil fines cont
ent and magnitude scaling factors.
We hope that you will join us
for what should be an informative and insightful event. Don't forget: ASCE
OC G-I does issue professional development hours (PDHs), and this event wi
ll be worth 1.0 PDH. We look forward to seeing you soon.