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Seismic Analysis of Pile in Liquefiable Soil and Plastic Hinge

Rostami, R, Hytiris, N, Bhattacharya, Subhamoy and Giblin, M (2017) Seismic Analysis of Pile in Liquefiable Soil and Plastic Hinge Geotechnical Research, 4 (4). pp. 203-213.

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Liquefaction is one of the leading seismic actions to cause extensive damage to buildings and infrastructure during earthquakes. In many historic cases, plastic hinge formations in piles were observed at inexplicable locations. This project investigates the behaviour of piled foundations within soils susceptible to liquefaction using numerical analysis carried out in Abaqus in terms of plastic hinge development. Three different soil profiles were considered in this project by varying the thickness of both the liquefiable and non-liquefiable layers, pile length, free and fixed head pile conditions. Modelling a single pile as a beam-column element carrying both axial and El-Centro record earthquake loading produced results of the seismic behaviour of piles that could be assessed by Force-Based Seismic Design (FBSD) approaches. The displacements and deformations induced by dynamic loads were analysed for piles affected by liquefaction and the results used to demonstrate the pile capacity and discuss the damage patterns and location of plastic hinges. Parametric studies generally demonstrate that plastic hinge formation occurs at the boundaries of the liquefiable and non-liquefiable layers; however, the location can be affected by a variety of factors such as material properties, pile length and thickness of liquefying soil layer.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
Rostami, R
Hytiris, N
Giblin, M
Date : 14 December 2017
DOI : 10.1680/jgere.17.00009
Copyright Disclaimer : This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords : foundations geotechnical engineering seismic engineering
Depositing User : Melanie Hughes
Date Deposited : 21 Nov 2017 15:47
Last Modified : 16 Jan 2019 19:04

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