CUED Publications database

LEAP-GWU-2015: Centrifuge and numerical modelling of slope liquefaction at the University of Cambridge

Madabhushi, SSC and Haigh, SK and Madabhushi, GSP (2015) LEAP-GWU-2015: Centrifuge and numerical modelling of slope liquefaction at the University of Cambridge. Soil Dynamics and Earthquake Engineering. ISSN 0267-7261

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Abstract

© 2016 Elsevier Ltd. As part of the LEAP-GWU-2015 exercise, a dynamic centrifuge test was conducted at the University of Cambridge on a 5 slope of medium dense Ottawa F-65 sand. The model preparation and saturation details are presented in this paper. This paper presents the experimental data recorded during small and large magnitude sinusoidal ground motions. After the experiment, numerical simulations of the experiment were performed using the finite element code Swandyne. The results from these numerical analyses are compared with the centrifuge test data and the deformations observed during the post-test investigations. The numerical analyses replicated many of the salient features of the test, such as the overall generation of excess pore pressures and attenuation of accelerations in the liquefying ground. More subtle results, such as the de-liquefaction shocks and the asymmetric response due to differences in upslope and downslope accelerations were less well captured in terms of the expected spikes in the dynamic excess pore pressures and accelerations. Overall, the combination of centrifuge testing and numerical analysis were found to complement each other well.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:19
Last Modified: 12 Oct 2017 01:47
DOI: