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Winkler springs (p-y curves) for liquefied soil from element tests

Rouholamin, M; Bhattacharya, S; Lombardi, D


M Rouholamin

S Bhattacharya

D Lombardi


Kenichi Soga

Krishna Kumar

Giovanna Biscontin

Matthew Kuo


In practice, piles are most often modelled as "Beams on Non-Linear Winkler Foundation" (also known as “p-y spring” approach) where the soil is idealised as p-y springs. These p-y springs are obtained through semi-empirical approach using element test results of the soil. For liquefied soil, a reduction factor (often termed as p-multiplier approach) is applied on a standard p-y curve for the non-liquefied condition to obtain the p-y curve liquefied soil condition. This paper presents a methodology to obtain p-y curves for liquefied soil based on element testing of liquefied soil considering physically plausible mechanisms. Validation of the proposed p-y curves is carried out through the back analysis of physical model tests.

Conference Name International Symposium on Geomechanics from Micro and Macro
Start Date Sep 1, 2014
End Date Sep 3, 2014
Online Publication Date Sep 25, 2014
Publication Date Aug 26, 2014
Deposit Date Feb 10, 2015
Publicly Available Date Feb 10, 2015
Publisher CRC Press
Peer Reviewed Peer Reviewed
Pages 951-956
Book Title Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
ISBN 9781138027077; 9781315737324
Keywords p-y spring; soil testing; liquefied soil; element testing; piles; Winkler method;
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