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:	Bushra Suhale Al-Busoda, Hassan Obaid Abbase
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2016
Materias:	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/862c9eb295e4443e83b25a6bb72ecc9e
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spelling	oai:doaj.org-article:862c9eb295e4443e83b25a6bb72ecc9e2021-12-02T05:27:34ZHelical Piles Embedded in Expansive Soil Overlaying Sandy Soil1818-1171https://doaj.org/article/862c9eb295e4443e83b25a6bb72ecc9e2016-09-01T00:00:00Zhttp://www.iasj.net/iasj?func=fulltext&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%).Bushra Suhale Al-BusodaHassan Obaid AbbaseAl-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 Bushra Suhale Al-Busoda Hassan Obaid Abbase 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	Bushra Suhale Al-Busoda Hassan Obaid Abbase
author_facet	Bushra Suhale Al-Busoda Hassan Obaid Abbase
author_sort	Bushra Suhale Al-Busoda
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/862c9eb295e4443e83b25a6bb72ecc9e
work_keys_str_mv	AT bushrasuhalealbusoda helicalpilesembeddedinexpansivesoiloverlayingsandysoil AT hassanobaidabbase helicalpilesembeddedinexpansivesoiloverlayingsandysoil
_version_	1718400424714698752

Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil

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