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New onshore wind turbine foundation system for poor soil

Mohamed, Wael Mahmoud LU and Austrell, Per Erik LU (2015) European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 In European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings
Abstract

In this study, an innovative idea of using a plane circular raft surrounded by a water tank is tested numerically using finite element simulations and compared with a conventional piled foundation concerning the geotechnical behavior. Cost comparisons are done for two foundation solutions. An observed soil profile found in Port-Said region in Egypt is used. The soil profile is implemented in the FE softwares Abaqus and Elpla to evaluate these types of foundations on the mentioned type of soil. In terms of settlement and tilting it is shown that there is a good effect of using a water tank surrounding the ordinary circular raft for the actual soil profile in the Port-Said region. For the cost issue, the analysis was carried out to... (More)

In this study, an innovative idea of using a plane circular raft surrounded by a water tank is tested numerically using finite element simulations and compared with a conventional piled foundation concerning the geotechnical behavior. Cost comparisons are done for two foundation solutions. An observed soil profile found in Port-Said region in Egypt is used. The soil profile is implemented in the FE softwares Abaqus and Elpla to evaluate these types of foundations on the mentioned type of soil. In terms of settlement and tilting it is shown that there is a good effect of using a water tank surrounding the ordinary circular raft for the actual soil profile in the Port-Said region. For the cost issue, the analysis was carried out to calculate the whole foundation cost for a circular raft surrounded by a water tank and also for a piled raft. It is shown that using the new foundation system will give a decrease in the initial foundation cost by 28% compared to using a piled raft with a pile length equal to 24 m. The effect of dynamic loads was also investigated and the results showed that the tower-foundation-soil system, using a circular raft surrounded by a water tank, successfully avoids resonance through the rotor excitations.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Conical raft, FE analysis, Onshore wind turbine, Raft with a water tank
in
European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings
publisher
European Wind Energy Association
conference name
European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015
external identifiers
  • scopus:85034242583
ISBN
9782930670003
language
English
LU publication?
yes
id
549c9538-a6a2-4635-a4a1-c0951f1850db
date added to LUP
2017-12-11 14:40:44
date last changed
2018-04-15 04:49:11
@inproceedings{549c9538-a6a2-4635-a4a1-c0951f1850db,
  abstract     = {<p>In this study, an innovative idea of using a plane circular raft surrounded by a water tank is tested numerically using finite element simulations and compared with a conventional piled foundation concerning the geotechnical behavior. Cost comparisons are done for two foundation solutions. An observed soil profile found in Port-Said region in Egypt is used. The soil profile is implemented in the FE softwares Abaqus and Elpla to evaluate these types of foundations on the mentioned type of soil. In terms of settlement and tilting it is shown that there is a good effect of using a water tank surrounding the ordinary circular raft for the actual soil profile in the Port-Said region. For the cost issue, the analysis was carried out to calculate the whole foundation cost for a circular raft surrounded by a water tank and also for a piled raft. It is shown that using the new foundation system will give a decrease in the initial foundation cost by 28% compared to using a piled raft with a pile length equal to 24 m. The effect of dynamic loads was also investigated and the results showed that the tower-foundation-soil system, using a circular raft surrounded by a water tank, successfully avoids resonance through the rotor excitations.</p>},
  author       = {Mohamed, Wael Mahmoud and Austrell, Per Erik},
  booktitle    = {European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings},
  isbn         = {9782930670003},
  keyword      = {Conical raft,FE analysis,Onshore wind turbine,Raft with a water tank},
  language     = {eng},
  publisher    = {European Wind Energy Association},
  title        = {New onshore wind turbine foundation system for poor soil},
  year         = {2015},
}