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Weight reduction of concrete poles for the Swedish power line grid: Using a Finite Element Model to optimize geometry in relation to load requirements
Linnaeus University, Faculty of Technology, Department of Building Technology.
2017 (English)Independent thesis Advanced level (degree of Master (One Year)), 40 credits / 60 HE creditsStudent thesis
Abstract [en]

Because of an eventual ban of creosote-impregnated products, alternative materials for poles used in the electrical grid are needed. Concrete is one alternative and spun concrete poles have been manufactured for the Swedish grid before. These poles are still in use since the high strength and good functioning. However, they weigh too much in terms of the way that poles are assembled on the grid today. Therefore, a study comparing the capacity of different geometries, resulting in lower weight, is of interest. 

In this Master’s Thesis, crack initiation and compressive failure in concrete poles are examined by creating FE-models in the software BRIGADE/Plus, using concrete damage plasticity. Thus, guidance is provided about how thin the concrete walls can be made without risking failure – which also means how low the weight of such a pole can be.

The failure most likely to occur is a compressive failure in the concrete with a ductile behavior. The result shows that a geometry change, which implies a thinner concrete wall, is possible. This means a weight reduction between 30-75 % or even more, depending on which network the poles are designed for.

Place, publisher, year, edition, pages
2017. , 80 p.
Keyword [en]
Keywords: FE-model, Finite Element model, Concrete damage plasticity, Fracture mechanics, Fracture energy, Pole
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:lnu:diva-66823OAI: oai:DiVA.org:lnu-66823DiVA: diva2:1120361
External cooperation
Abetong AB
Subject / course
Byggteknik
Educational program
Structural Engineering, Master Programme, 60 credits
Presentation
2017-05-31, Växjö, 11:00 (English)
Supervisors
Examiners
Available from: 2017-07-06 Created: 2017-07-06 Last updated: 2017-07-06Bibliographically approved

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fulltext(2137 kB)141 downloads
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Bülow Angeling, Jenny
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CiteExportLink to record
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Citation style
  • apa
  • ieee
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Language
  • de-DE
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  • en-US
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  • nn-NB
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  • Other locale
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Output format
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