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A practical method for construction of p-y curves for liquefiable soils

Dash, SR, Rouholamin, M and Bhattacharya, Subhamoy (2017) A practical method for construction of p-y curves for liquefiable soils Soil Dynamics and Earthquake Engineering, 97. pp. 478-481.

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Abstract

In practice, analysis of laterally loaded piles is often carried out using a “Beam on Non-linear Winkler Foundation method” whereby the lateral pile-soil interaction is modelled as a set of non-linear springs (also known as p y curves). During seismic liquefaction, the saturated sandy soil changes its state from a solid to a thick fluid like material (solid suspension), which in turn alters the shape of the p-y curve. Typically, p-y curves for non-liquefied soil looks like a convex curve with initial stiff slope which reduces with pile-soil relative displacement (y). However, recent research conclusively showed that p-y curve for liquefied soil has a different shape, i.e., upward concave with near-zero initial stiffness (due to the loss of particle to particle contact) up to a certain displacement (y), beyond which the stiffness increases due to reengaging of the sand particles. This paper presents a practical method for construction of the newly proposed p-y curves along with an example.

Item Type: Article
Subjects : Civil & Environmental Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Dash, SRUNSPECIFIEDUNSPECIFIED
Rouholamin, MUNSPECIFIEDUNSPECIFIED
Bhattacharya, Subhamoys.bhattacharya@surrey.ac.ukUNSPECIFIED
Date : 5 April 2017
Identification Number : 10.1016/j.soildyn.2017.03.002
Copyright Disclaimer : © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : p-y curves, liquefied soil, pile-soil interaction, BNWF model
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 03 Mar 2017 14:59
Last Modified : 05 Jul 2017 11:36
URI: http://epubs.surrey.ac.uk/id/eprint/813691

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