Difference and Sensitivity Analyses of the LEAP-2017 Experiments

Nithyagopal Goswami, Mourad Zeghal, Bruce L. Kutter, Majid T. Manzari, Tarek Abdoun, Trevor Carey, Yun Min Chen, Sandra Escoffier, Stuart K. Haigh, Wen Yi Hung, Dong Soo Kim, Seong Nam Kim, Evangelia Korre, Ting Wei Liao, Kai Liu, Gopal S.P. Madabhushi, Srikanth S.C. Madabhushi, Mitsu Okamura, Asri Nurani Sjafruddin, Tetsuo TobitaKyohei Ueda, Ruben Vargas, Yan Guo Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The experimental results of LEAP (Liquefaction Experiments and Analysis Projects) centrifuge test replicas of a saturated sloping deposit are used to assess the sensitivity of soil accelerations to variability in input motion and soil deposition. A difference metric is used to quantify the dissimilarities between recorded acceleration time histories. This metric is uniquely decomposed in terms of four difference component measures associated with phase, frequency shift, amplitude at 1 Hz, and amplitude of frequency components higher than 2 Hz (2 + Hz). The sensitivity of the deposit response accelerations to differences in input motion amplitude at 1 Hz and 2 + Hz and cone penetration resistance (used as a measure reflecting soil deposition and initial grain packing condition) was obtained using a Gaussian process-based kriging. These accelerations were found to be more sensitive to variations in cone penetration resistance values than to the amplitude of the input motion 1 Hz and 2 + Hz (frequency) components. The sensitivity functions associated with this resistance parameter were found to be substantially nonlinear.

Original languageEnglish
Title of host publicationModel Tests and Numerical Simulations of Liquefaction and Lateral Spreading - LEAP-UCD-2017
EditorsBruce L. Kutter, Majid T. Manzari, Mourad Zeghal
PublisherSpringer Nature
Pages131-156
Number of pages26
ISBN (Electronic)9783030228170
DOIs
StatePublished - 2020
EventWorkshop on Liquefaction Experiments and Analysis Projects, LEAP-UCD 2017 - Davis, United States
Duration: 14 Dec 2017 → …

Publication series

NameModel Tests and Numerical Simulations of Liquefaction and Lateral Spreading - LEAP-UCD-2017

Conference

ConferenceWorkshop on Liquefaction Experiments and Analysis Projects, LEAP-UCD 2017
Country/TerritoryUnited States
CityDavis
Period14/12/17 → …

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