CUED Publications database

Twenty-Four Centrifuge Tests to Quantify Sensitivity of Lateral Spreading to Dr and PGA

Kutter, BL and Carey, TJ and Zheng, BL and Gavras, A and Stone, N and Zeghal, M and Abdoun, T and Korre, E and Manzari, M and Madabhushi, GSP and Haigh, S and Madabhushi, SSC and Okamura, M and Sjafuddin, AN and Escoffier, S and Kim, DS and Kim, SN and Ha, JG and Tobita, T and Yatsugi, H and Ueda, K and Vargas, RR and Hung, WY and Liao, TW and Zhou, YG and Liu, K (2018) Twenty-Four Centrifuge Tests to Quantify Sensitivity of Lateral Spreading to Dr and PGA. In: UNSPECIFIED pp. 383-393..

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Twenty-four centrifuge model tests have been conducted at nine different geotechnical centrifuge facilities around the world as part of the international LEAP effort (liquefaction experiments and analysis projects). All of the centrifuge models represent a 4 m deep 5 degree sloping submerged sand deposit. The mean effective PGA of the input motion for all of the experiments was approximately 0.15 g and the mean relative density was approximately 65%, but the effective PGA's varied between about 0.07 g and 0.3 g, and the relative densities varied between about 40% and 75%. The test matrix was designed to enable experimental quantification of not only the median response but also the trend and sensitivity of the model response to density and shaking intensity. Quantification of the sensitivity of the response to initial conditions is a prerequisite for objective evaluation of the quality of the model test data. In other words, a discrepancy between two experiments should be evaluated after accounting for the uncertainty in the initial conditions and the sensitivity of the response to initial conditions. For the first time, a sufficient number of experiments has been performed on a similar problem to provide meaningful quantitative evaluation of the trend between PGA, density, and displacement. The sensitivity is quantified by the gradient of the trend and the uncertainty of the trend is quantified from the residuals between the fitting data and the trend.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 31 Aug 2018 20:09
Last Modified: 31 Aug 2021 09:03
DOI: 10.1061/9780784481486.040