Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wind Turbine Foundation Using PHC Piles in Problematic Soil
This article presents details of the 4.5 MW wind turbine foundation supported on pretensioned spun high-strength concrete pile (PHC pile) in problematic soil. The top 20 m of the foundation soil is very soft clay having SPT N value of ≈1 followed by stiff to very stiff clay soil. Groundwater table is also observed near the ground surface. Considering the soil conditions and the load coming from the wind turbine, it is proposed to use standard circular foundation supported on PHC piles as the foundation system. Finite element analyses have been carried out using Abaqus 6.18 software to understand the soil structure interaction of the foundation system subjected to given loading condition. From the FE analyses, a 21.6 m standard circular foundation having a pedestal height of 3.5 m is proposed to support the structure. A total of 36 numbers of PHC piles (vertical and raker) of 50 m length is provided in two rows below the standard foundation. The outer raker piles are provided at 10° batter angle to resist the lateral load. Fatigue verification for both steel and concrete is carried out considering 20 years’ service life of the structure. It is concluded that the proposed foundation system (standard circular with PHC piles) is suitable for transferring the load from the wind turbine to the foundation system in poor soils.
Wind Turbine Foundation Using PHC Piles in Problematic Soil
This article presents details of the 4.5 MW wind turbine foundation supported on pretensioned spun high-strength concrete pile (PHC pile) in problematic soil. The top 20 m of the foundation soil is very soft clay having SPT N value of ≈1 followed by stiff to very stiff clay soil. Groundwater table is also observed near the ground surface. Considering the soil conditions and the load coming from the wind turbine, it is proposed to use standard circular foundation supported on PHC piles as the foundation system. Finite element analyses have been carried out using Abaqus 6.18 software to understand the soil structure interaction of the foundation system subjected to given loading condition. From the FE analyses, a 21.6 m standard circular foundation having a pedestal height of 3.5 m is proposed to support the structure. A total of 36 numbers of PHC piles (vertical and raker) of 50 m length is provided in two rows below the standard foundation. The outer raker piles are provided at 10° batter angle to resist the lateral load. Fatigue verification for both steel and concrete is carried out considering 20 years’ service life of the structure. It is concluded that the proposed foundation system (standard circular with PHC piles) is suitable for transferring the load from the wind turbine to the foundation system in poor soils.
Wind Turbine Foundation Using PHC Piles in Problematic Soil
Lecture Notes in Civil Engineering
Muthukkumaran, Kasinathan (Herausgeber:in) / Reddy, C. N. V. Satyanarayana (Herausgeber:in) / Joseph, Anil (Herausgeber:in) / Senthamilkumar, S. (Herausgeber:in) / Charles, Shirlin (Autor:in) / Mohapatra, Sunil Ranjan (Autor:in) / Prusty, Sudhansu Bhusan (Autor:in)
Indian Geotechnical Conference ; 2021 ; Trichy, India
29.11.2022
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Inconvenient Foundation System in Problematic Soil 1.07
| British Library Conference Proceedings | 1993
| British Library Conference Proceedings | 2019
Problematic soil or problematic soil mechanics?
| British Library Conference Proceedings | 1998
Engineering Index Backfile | 1912