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Optimization of wind turbine foundations for poor soil

Mohamed, Wael Mahmoud Mohamed LU and Austrell, Per Erik LU (2015) In COMPDYN 2015 II. p.4292-4304
Abstract
One of the most important constraints on large-scale civil engineering projects is economic feasibility. All projects are restricted by the cost of construction and materials. A cost analysis of alternative foundation designs for wind turbines is done in this work to aid the choice of design solution. The suitability of different foundation types are compared including a novel solution, with a circular raft surrounded by a water tank for soil with poor properties. In this work cost and behavior comparisons are done for two foundation solutions, namely a piled raft and a circular raft surrounded by a water tank. An observed soil profile found in Gothenburg region, Sweden is used. The soil profile is implemented in the FE software Abaqus to... (More)
One of the most important constraints on large-scale civil engineering projects is economic feasibility. All projects are restricted by the cost of construction and materials. A cost analysis of alternative foundation designs for wind turbines is done in this work to aid the choice of design solution. The suitability of different foundation types are compared including a novel solution, with a circular raft surrounded by a water tank for soil with poor properties. In this work cost and behavior comparisons are done for two foundation solutions, namely a piled raft and a circular raft surrounded by a water tank. An observed soil profile found in Gothenburg region, Sweden is used. The soil profile is implemented in the FE software Abaqus to find out the validity of using the different 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 Gothenburg 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 decrease the foundation cost compared to using piled raft with pile length = 28 m and one meter square pile. The effect of dynamic loads was also investigated and the results showed that the complete system, using circular raft surrounded by a water tank as a foundation, successfully avoids resonance through the rotor excitations. (Less)
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
Circular raft with a water tank, Dynamic analysis, FE analysis, Wind turbine foundations
in
COMPDYN 2015
editor
Papadrakakis, M.; Papadopoulos, V.; Plevris, V.; ; and
volume
II
pages
13 pages
publisher
National Technical University of Athens
external identifiers
  • scopus:84942279210
ISBN
978-960-99994-7-2
language
English
LU publication?
yes
id
9db12f12-d675-489a-8df5-2d2da3323994
alternative location
http://2015.compdyn.org/
date added to LUP
2017-12-18 15:38:53
date last changed
2018-04-15 04:49:26
@inproceedings{9db12f12-d675-489a-8df5-2d2da3323994,
  abstract     = {One of the most important constraints on large-scale civil engineering projects is economic feasibility. All projects are restricted by the cost of construction and materials. A cost analysis of alternative foundation designs for wind turbines is done in this work to aid the choice of design solution. The suitability of different foundation types are compared including a novel solution, with a circular raft surrounded by a water tank for soil with poor properties. In this work cost and behavior comparisons are done for two foundation solutions, namely a piled raft and a circular raft surrounded by a water tank. An observed soil profile found in Gothenburg region, Sweden is used. The soil profile is implemented in the FE software Abaqus to find out the validity of using the different 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 Gothenburg 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 decrease the foundation cost compared to using piled raft with pile length = 28 m and one meter square pile. The effect of dynamic loads was also investigated and the results showed that the complete system, using circular raft surrounded by a water tank as a foundation, successfully avoids resonance through the rotor excitations.},
  author       = {Mohamed, Wael Mahmoud Mohamed and Austrell, Per Erik},
  booktitle    = {COMPDYN 2015},
  editor       = {Papadrakakis, M. and Papadopoulos, V. and Plevris, V.},
  isbn         = {978-960-99994-7-2},
  keyword      = {Circular raft with a water tank,Dynamic analysis,FE analysis,Wind turbine foundations},
  language     = {eng},
  pages        = {4292--4304},
  publisher    = {National Technical University of Athens},
  title        = {Optimization of wind turbine foundations for poor soil},
  volume       = {II},
  year         = {2015},
}