Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils

Laboratory and field studies have shown that granular pile-anchor foundations (GPAF) are a promising foundation system that can be used to reduce the detrimental effects of reactive soils. This paper presents results from finite element analyses undertaken on granular pile-anchor foundations in a re...

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Main Authors: Ismail, M., Shahin, Mohamed
Other Authors: Mohamed A Shahin
Format: Conference Paper
Published: Australian Geomechanics Society 2011
Subjects:
Online Access:http://hdl.handle.net/20.500.11937/37880
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author Ismail, M.
Shahin, Mohamed
author2 Mohamed A Shahin
author_facet Mohamed A Shahin
Ismail, M.
Shahin, Mohamed
author_sort Ismail, M.
building Curtin Institutional Repository
collection Online Access
description Laboratory and field studies have shown that granular pile-anchor foundations (GPAF) are a promising foundation system that can be used to reduce the detrimental effects of reactive soils. This paper presents results from finite element analyses undertaken on granular pile-anchor foundations in a reactive soil using PLAXIS software. The study investigated the ability of a single pile to resist forces induced by both heave and shrinkage. The results confirmed the efficiency of the granular pile-anchor foundations in resisting heave induced by moisture gain. However, in order to resist shrinkage, the GPAF system has to be reinforced with geofabric to assist resisting bulging of the granular pile into the surrounding soil. The analyses showed that success of the GPAF in heave resistance may be adversely influenced by the high stiffness of the interface, which requires only small relative movement to mobilize full resistance. Using a group of piles instead of a single pile under a footing can reduce the efficiency of the GPAF system.
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institution Curtin University Malaysia
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publishDate 2011
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spelling curtin-20.500.11937-378802023-01-27T05:52:11Z Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils Ismail, M. Shahin, Mohamed Mohamed A Shahin Hamid R Nikraz PLAXIS swelling reactive soil geofabric shrinkage foundation granular pile Laboratory and field studies have shown that granular pile-anchor foundations (GPAF) are a promising foundation system that can be used to reduce the detrimental effects of reactive soils. This paper presents results from finite element analyses undertaken on granular pile-anchor foundations in a reactive soil using PLAXIS software. The study investigated the ability of a single pile to resist forces induced by both heave and shrinkage. The results confirmed the efficiency of the granular pile-anchor foundations in resisting heave induced by moisture gain. However, in order to resist shrinkage, the GPAF system has to be reinforced with geofabric to assist resisting bulging of the granular pile into the surrounding soil. The analyses showed that success of the GPAF in heave resistance may be adversely influenced by the high stiffness of the interface, which requires only small relative movement to mobilize full resistance. Using a group of piles instead of a single pile under a footing can reduce the efficiency of the GPAF system. 2011 Conference Paper http://hdl.handle.net/20.500.11937/37880 Australian Geomechanics Society fulltext
spellingShingle PLAXIS
swelling
reactive soil
geofabric
shrinkage
foundation
granular pile
Ismail, M.
Shahin, Mohamed
Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils
title Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils
title_full Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils
title_fullStr Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils
title_full_unstemmed Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils
title_short Finite Element Analyses of Granular Pile Anchors as a Foundation Option for Reactive Soils
title_sort finite element analyses of granular pile anchors as a foundation option for reactive soils
topic PLAXIS
swelling
reactive soil
geofabric
shrinkage
foundation
granular pile
url http://hdl.handle.net/20.500.11937/37880