Details
| Original language | English |
|---|---|
| Pages (from-to) | 1729-1734 |
| Number of pages | 6 |
| Journal | Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering |
| Volume | 31 |
| Issue number | 11 |
| Publication status | Published - Nov 2009 |
Abstract
In order to develop renewable energy, the offshore wind energy technology has been a main research field in Europe. A foundation with sufficient stiffness to resist long-term wind and wave load to insure the serviceability of wind energy converter is needed. The monopile foundation, the steel pipe pile with a large diameter, is one of well adopted foundations in the existing and planned offshore wind parks. The usually used design method, p-y curves method, is unsuitable for estimating the deformation response of the large-diameter monopile under long-term cyclic lateral load. This paper aims to present a calculation method for estimating the lateral deformation response of a single pile in sandy soil under cyclic lateral load based on the cyclic triaxial test results. The degradation of secant soil stiffness due to the accumulation of plastic strain under cyclic loading is formulated. Through this degradation stiffness model, the accumulated deformation of a single pile can be quantified using a finite element model with three calculation steps. The proposed method is applicable for uniform or layered subsoil in a preliminary design.
Keywords
- Cyclic lateral load, Cyclic triaxial test, Monopile, Offshore wind energy
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
Sustainable Development Goals
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In: Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, Vol. 31, No. 11, 11.2009, p. 1729-1734.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Estimation of lateral deformation of monopile foundations by use of cyclic triaxial tests
AU - Kuo, Yu Shu
AU - Achmus, Martin
AU - Abdel-Rahman, Khalid
PY - 2009/11
Y1 - 2009/11
N2 - In order to develop renewable energy, the offshore wind energy technology has been a main research field in Europe. A foundation with sufficient stiffness to resist long-term wind and wave load to insure the serviceability of wind energy converter is needed. The monopile foundation, the steel pipe pile with a large diameter, is one of well adopted foundations in the existing and planned offshore wind parks. The usually used design method, p-y curves method, is unsuitable for estimating the deformation response of the large-diameter monopile under long-term cyclic lateral load. This paper aims to present a calculation method for estimating the lateral deformation response of a single pile in sandy soil under cyclic lateral load based on the cyclic triaxial test results. The degradation of secant soil stiffness due to the accumulation of plastic strain under cyclic loading is formulated. Through this degradation stiffness model, the accumulated deformation of a single pile can be quantified using a finite element model with three calculation steps. The proposed method is applicable for uniform or layered subsoil in a preliminary design.
AB - In order to develop renewable energy, the offshore wind energy technology has been a main research field in Europe. A foundation with sufficient stiffness to resist long-term wind and wave load to insure the serviceability of wind energy converter is needed. The monopile foundation, the steel pipe pile with a large diameter, is one of well adopted foundations in the existing and planned offshore wind parks. The usually used design method, p-y curves method, is unsuitable for estimating the deformation response of the large-diameter monopile under long-term cyclic lateral load. This paper aims to present a calculation method for estimating the lateral deformation response of a single pile in sandy soil under cyclic lateral load based on the cyclic triaxial test results. The degradation of secant soil stiffness due to the accumulation of plastic strain under cyclic loading is formulated. Through this degradation stiffness model, the accumulated deformation of a single pile can be quantified using a finite element model with three calculation steps. The proposed method is applicable for uniform or layered subsoil in a preliminary design.
KW - Cyclic lateral load
KW - Cyclic triaxial test
KW - Monopile
KW - Offshore wind energy
UR - http://www.scopus.com/inward/record.url?scp=71949121366&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:71949121366
VL - 31
SP - 1729
EP - 1734
JO - Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
JF - Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
SN - 1000-4548
IS - 11
ER -