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Title: Influence of the sloping ground conditions and the subsequent shaking events on the pile group response subjected to kinematic interactions for a liquefiable sloping ground
Authors: Sahare, Anurag
Ueda, Kyohei
Uzuoka, Ryosuke
Author's alias: 上田, 恭平
渦岡, 良介
Keywords: Centrifuge model test
Soil-pile interaction
Kinematic interaction
Lateral spreading
Soil liquefaction
Issue Date: Jan-2022
Publisher: Elsevier BV
Journal title: Soil Dynamics and Earthquake Engineering
Volume: 152
Thesis number: 107036
Abstract: The soil-pile kinematic interaction under large nonlinearity, including soil liquefaction, represents a complex phenomenon that depends on many unforeseen factors. This paper presents the results of dynamic centrifuge tests carried out considering varying sloping inclination angles for a liquefiable ground subjected to four successive earthquake shakings having an increasing amplitude of acceleration. The results indicated the ground surface sloping inclinations to have a significant influence on the kinematic bending moment response of the piles. The significantly larger kinematic moments were generated on the downslope pile compared to the upslope pile highlighting the non-existence of shadowing effects during the lateral spreading for a liquefiable sloping ground. The kinematic moments generated during the first shaking, having predominant lateral spreading were substantially larger than the following three shakings, indicating the complex kinematic interaction to depend not only on the amplitude of base excitation; but mostly on the magnitude of lateral spreading. Moreover, the influences of the generated E.P.W.P on the pile response was studied and it was found that the piles may receive maximum kinematic moments around the occurrence of liquefaction to the time of initiation of dissipation phase of the generated E.P.W.P.
Rights: © 2021 The Authors. Published by Elsevier Ltd.
This is an open access article under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license.
DOI(Published Version): 10.1016/j.soildyn.2021.107036
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