Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil

In this study, the behavior of square helical piles models (5×5) mm2 embedded in expansive soil bed overlaying a layer of sandy soil was investigated. The sand layer 200mm thickness was compacted into four sub layers in a steel container with diameter 400mm in size. Sandy soil layer was compacted in...

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Autores principales: Hassan Obaid Abbase, Bushra Suhail Al-Busoda
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Lenguaje:EN
Publicado: Al-Khwarizmi College of Engineering – University of Baghdad 2016
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Acceso en línea:https://doaj.org/article/62a52f0c1298497b834fd28251aa9b6d
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spelling oai:doaj.org-article:62a52f0c1298497b834fd28251aa9b6d2021-12-02T07:36:17ZHelical Piles Embedded in Expansive Soil Overlaying Sandy Soil1818-1171https://doaj.org/article/62a52f0c1298497b834fd28251aa9b6d2016-09-01T00:00:00Zhttp://www.iasj.net/iasj?func=article&aId=113809https://doaj.org/toc/1818-1171In this study, the behavior of square helical piles models (5×5) mm2 embedded in expansive soil bed overlaying a layer of sandy soil was investigated. The sand layer 200mm thickness was compacted into four sub layers in a steel container with diameter 400mm in size. Sandy soil layer was compacted into two relative densities 40% and 80%. The bed of expansive soil 300mm thickness was compacted into six sub layers on sandy soil layer. Model tests are performed with helical pile length 350mm, 400mm and 450mm and with helix diameter 15mm and 20mm. Also, one helix and double helix were used for these piles. Water was allowed to seep from bottom of sandy soil to reach surface of expansive soil through four sand drains around helical pile. This study revealed that the upward movement of helical piles decreases with increasing depth of embedment in the sandy layer, helix diameter and number of helix. The increase in these parameters provides anchorage against uplifting. Helical piles embedded in sandy soil of relative density (40%) have uplift movement more than helical piles of relative density (80%).Hassan Obaid Abbase Bushra Suhail Al-BusodaAl-Khwarizmi College of Engineering – University of BaghdadarticleChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 12, Iss 3, Pp 19-25 (2016)
institution DOAJ
collection DOAJ
language EN
topic Chemical engineering
TP155-156
Engineering (General). Civil engineering (General)
TA1-2040
spellingShingle Chemical engineering
TP155-156
Engineering (General). Civil engineering (General)
TA1-2040
Hassan Obaid Abbase
Bushra Suhail Al-Busoda
Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil
description In this study, the behavior of square helical piles models (5×5) mm2 embedded in expansive soil bed overlaying a layer of sandy soil was investigated. The sand layer 200mm thickness was compacted into four sub layers in a steel container with diameter 400mm in size. Sandy soil layer was compacted into two relative densities 40% and 80%. The bed of expansive soil 300mm thickness was compacted into six sub layers on sandy soil layer. Model tests are performed with helical pile length 350mm, 400mm and 450mm and with helix diameter 15mm and 20mm. Also, one helix and double helix were used for these piles. Water was allowed to seep from bottom of sandy soil to reach surface of expansive soil through four sand drains around helical pile. This study revealed that the upward movement of helical piles decreases with increasing depth of embedment in the sandy layer, helix diameter and number of helix. The increase in these parameters provides anchorage against uplifting. Helical piles embedded in sandy soil of relative density (40%) have uplift movement more than helical piles of relative density (80%).
format article
author Hassan Obaid Abbase
Bushra Suhail Al-Busoda
author_facet Hassan Obaid Abbase
Bushra Suhail Al-Busoda
author_sort Hassan Obaid Abbase
title Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil
title_short Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil
title_full Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil
title_fullStr Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil
title_full_unstemmed Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil
title_sort helical piles embedded in expansive soil overlaying sandy soil
publisher Al-Khwarizmi College of Engineering – University of Baghdad
publishDate 2016
url https://doaj.org/article/62a52f0c1298497b834fd28251aa9b6d
work_keys_str_mv AT hassanobaidabbase helicalpilesembeddedinexpansivesoiloverlayingsandysoil
AT bushrasuhailalbusoda helicalpilesembeddedinexpansivesoiloverlayingsandysoil
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