Structural behaviour of concrete poles used in electric's power distribution network

Based on a preliminary study on regional electric companies, it is shown that there is no precise structural design on the concrete poles. This leads to uneconomical and overestimated networks’ components. Therefore, this study was aimed to investigate the lateral performance of the concrete poles w...

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Autores principales:	Mehran Zeynalian, M. Zamani
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2017
Materias:	power distribution network concrete poles finite element structural performance r factor Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/22cb4cd753e04d34a68a0939a6c98886
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spelling	oai:doaj.org-article:22cb4cd753e04d34a68a0939a6c988862021-11-08T15:46:54ZStructural behaviour of concrete poles used in electric's power distribution network2476-39772538-261610.22065/jsce.2017.44439https://doaj.org/article/22cb4cd753e04d34a68a0939a6c988862017-12-01T00:00:00Zhttps://www.jsce.ir/article_44439_29b064c5405c638e1869b39889a8de86.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Based on a preliminary study on regional electric companies, it is shown that there is no precise structural design on the concrete poles. This leads to uneconomical and overestimated networks’ components. Therefore, this study was aimed to investigate the lateral performance of the concrete poles which are employed in electric’s power distribution network. This paper presents a numerical study on structural performance of 12 m concrete poles used in electric’s power distribution network using Abaqus software. A sensitivity study for mesh size is carried out and concrete damaged plasticity has been employed. The results show that relatively coarse mesh (average) in damaged concrete method gives more reliable result. Some experimental tests based on the Iranian standards were performed in order to make a bench mark for numerical output. Comparison between numerical and experimental results indicates a good agreement between the results. The outcomes also suggest that while the applied lateral load is less than around 400 kg which is assumed as the nominal resistance of the pole, no transverse crack occurs. Based on both experimental and numerical results, one or two transverse cracks are reported when the applied force reaches up to 600 kg. The rate of cracks is amplified by increasing the applied force; and finally, the pole would lose its capacity when the load rises much more than 1200 kg. The study also shows that the poles are very weak when the load direction changes. Also, it can be concluded that the final strength of the pole is higher than what the standards recommend. Finally, seismic behavior factor of the poles around both main axes are evaluated. The estimated seismic resistance factor for the concrete poles indicates that the prescribed R factor for such structure is relatively low; and can be improved at least 20%.Mehran ZeynalianM. ZamaniIranian Society of Structrual Engineering (ISSE)articlepower distribution network concrete polesfinite elementstructural performancer factorBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 4, Iss 4, Pp 29-41 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	power distribution network concrete poles finite element structural performance r factor Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	power distribution network concrete poles finite element structural performance r factor Bridge engineering TG1-470 Building construction TH1-9745 Mehran Zeynalian M. Zamani Structural behaviour of concrete poles used in electric's power distribution network
description	Based on a preliminary study on regional electric companies, it is shown that there is no precise structural design on the concrete poles. This leads to uneconomical and overestimated networks’ components. Therefore, this study was aimed to investigate the lateral performance of the concrete poles which are employed in electric’s power distribution network. This paper presents a numerical study on structural performance of 12 m concrete poles used in electric’s power distribution network using Abaqus software. A sensitivity study for mesh size is carried out and concrete damaged plasticity has been employed. The results show that relatively coarse mesh (average) in damaged concrete method gives more reliable result. Some experimental tests based on the Iranian standards were performed in order to make a bench mark for numerical output. Comparison between numerical and experimental results indicates a good agreement between the results. The outcomes also suggest that while the applied lateral load is less than around 400 kg which is assumed as the nominal resistance of the pole, no transverse crack occurs. Based on both experimental and numerical results, one or two transverse cracks are reported when the applied force reaches up to 600 kg. The rate of cracks is amplified by increasing the applied force; and finally, the pole would lose its capacity when the load rises much more than 1200 kg. The study also shows that the poles are very weak when the load direction changes. Also, it can be concluded that the final strength of the pole is higher than what the standards recommend. Finally, seismic behavior factor of the poles around both main axes are evaluated. The estimated seismic resistance factor for the concrete poles indicates that the prescribed R factor for such structure is relatively low; and can be improved at least 20%.
format	article
author	Mehran Zeynalian M. Zamani
author_facet	Mehran Zeynalian M. Zamani
author_sort	Mehran Zeynalian
title	Structural behaviour of concrete poles used in electric's power distribution network
title_short	Structural behaviour of concrete poles used in electric's power distribution network
title_full	Structural behaviour of concrete poles used in electric's power distribution network
title_fullStr	Structural behaviour of concrete poles used in electric's power distribution network
title_full_unstemmed	Structural behaviour of concrete poles used in electric's power distribution network
title_sort	structural behaviour of concrete poles used in electric's power distribution network
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2017
url	https://doaj.org/article/22cb4cd753e04d34a68a0939a6c98886
work_keys_str_mv	AT mehranzeynalian structuralbehaviourofconcretepolesusedinelectricspowerdistributionnetwork AT mzamani structuralbehaviourofconcretepolesusedinelectricspowerdistributionnetwork
_version_	1718441642997841920

Structural behaviour of concrete poles used in electric's power distribution network

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