Research Article
BibTex RIS Cite

Ultimate Load Capacity of Group-Pile Supported Jacket Foundations for Offshore Wind Energy Converters

Year 2019, , 345 - 355, 21.05.2019
https://doi.org/10.21205/deufmd.2019216203

Abstract

This
study was performed to investigate the ultimate horizontal load capacity of an
innovative foundation system for large offshore wind energy turbines (i.e. ∼5-7
MW) to be constructed in deep waters, ∼35-40 m. The ultimate capacity of the
standart jacket foundation system with single piles and double-pile supported
novel jacket foundation system were estimated using hyperbolic method.
Numerical method was used to evaulate the response of the foundations under
combined loading in saturated very dense sand. The validation of the developed
finite element model for two cases was made using the results of field tests in
the literature. The effect of pile length and pile spacing on the ultimate
capacity were determined by parametric analysis. The results indicate that the
jacket foundation with closely spaced piles provides higher ultimate load
capacity and shows a significantly better response than the response of a
single-pile configuration with embedded length L, although the total length of
the piles is same.


References

  • Referans1 Fraunhofer-Institut für Windenergie und Energiesystemtechnik (IWES) 2017. Windenergie Report Deutschland 2016. Fraunhofer Verlag, Stuttgart, 120s.
  • Referans2 Bhattacharya,S., Nikitas, N., Garnsey, J., Alexander, N.A., Cox, J., Lombardi,D. 2013. Observed Dynamic Soil-Structure Interaction in Scale Testing of Offshore Wind Turbine Foundations, Soil Dynamics and Earthquake Engineering, Cilt. 54, s. 47-60. DOI: 10.1016/j.soildyn.2013.07.012
  • Referans3 Frederiksen, H. 2008. Offshore Foundations for Windfarms. Project Report National University of Singapore, Singapore, 37s.
  • Referans4 Hung, L.C., Kim, S-R. 2014. Evaluation of Combined Horizontal-Moment Bearing Capacities of Tripod Bucket Foundations in Undrained Clay, Ocean Engineering, Cilt. 85, s. 100-109. DOI: 10.1016/j.oceaneng.2014.04.025
  • Referans5 Tran, N.X., Hung L.C., Kim S-R. 2017. Evaluation of Horizontal and Moment Bearing Capacities of Tripod Bucket Foundations in Sand, Ocean Engineering, Cilt. 140, s. 209-221. DOI: 10.1016/j.oceaneng.2017.05.012
  • Referans6 Brinkgreve R.B.J., Engin E., Swolfs W.M. (Editörler) 2013. Plaxis 3D User’s Manuel, Plaxis bv Delft, 46s. Referans7 Benz, T. 2007. Small Strain Stiffness of Soils and Its Numerical Consequences. Stuttgart Üniversitesi, Geoteknik Enstitüsü, 179s, Stuttgart.
  • Referans8 Reese, L.C., Cox, W.R., Koop F.D. 1974. Analysis of Laterally Loaded Piles in Sand. Proceedings of the Offshore Technology Conference, 6-8 Mayıs, Texas, 95-105.
  • Referans9 Akdag, C.T. 2016. Behavior of Closely Spaced Double-Pile-Supported Jacket Foundations for Offshore Wind Energy Converters under Monotonic Loading, Applied Ocean Research, Cilt. 58, s. 164-177. DOI: 10.1016/j.apor.2016.04.008
  • Referans10 Lee, H. H., Sun, Y. L. 1994. Yielding Load and Effective Length of Laterally Loaded Vertical Pile, Journal of the Chinese Institute of Civil and Hydraulic Engineering, Cilt. 6 , s. 161-167.
  • Referans11 Briaud, J. L. 1997. SALLP: Simple Approach for Lateral Loads on Piles, Journal of the Geotechnical and Geoenvironmental Engineering Division, ASCE, Cilt. 123, s. 958-964. DOI:10.1061/(ASCE)10900241(1997)123:10(958)
  • Referans12 Meyerhof, G. G., Sastry, V. V. R. N., Yalcin, A. S. 1988. Lateral Resistance and Deflection of Flexible Piles, Canadian Geotechnical Journal, Cilt. 25, s. 511-5222. DOI: 10.1139/t88-056
  • Referans13 Gleser, S. 1984. Generalized Behavior of Laterally Loaded Vertical Piles, ss 239-243. Langer, J.A., Mosley, E.T., Thompson, C.D., ed. 1984. Laterally Loaded Deep Foundations: Analysis and Performance, ASTM Special Publications, 251s.
  • Referans14 Slack, D. C., Walker, J. N. 1970. Deflections of Shallow Pier Foundations, Journal of the Soil Mechanics and Foundations Division, ASCE, Cilt. 96, s. 1143-1157.
  • Referans15 Villalobos FA, Byrne BW, Houlsby GT. 2005. Moment loading of caissons installed in saturated sand. In: Proceedings of international symposium on frontiers in Geotechnics, ISFOG. University of Western, 19-21 Eylül, Perth, 411-16.
  • Referans16 Manoliu I, Dimitriu DV, Radulescu N, Dobrecu GH. 1985. Load–deformation Characteristics of Drilled Piers. Proceedings of 11th International Conference on Soil Mechanics and Foundation Engineering, 12-16 Ağustos, San Francisco, 1553-1558.
  • Referans17 Achmus M., Kuo Y-S., Abdel-Rahman K. 2009. Behavior of Monopile Foundations under Cyclic Lateral Load, Computers and Geotechnics, Cilt. 36, s. 725-735. DOI: 10.1016/j.compgeo.2008.12.003
  • Referans18 Achmus M., Akdag C.T., Thieken K. 2013. Load-bearing Behavior of Suction Bucket Foundations in Sand, Applied Ocean Research, Cilt. 43, s. 157-165. DOI: 10.1016/j.apor.2013.09.001
  • Referans19 Akdag, C.T. 2017. Response of a Novel Supporting System for Offshore Wind Energy Converters. 3. Uluslararası Zemin-Yapı Etkileşimi Sempozyumu, 18-20 Ekim, İzmir, 383-393.

Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi

Year 2019, , 345 - 355, 21.05.2019
https://doi.org/10.21205/deufmd.2019216203

Abstract



Bu çalışmada derin sularda (∼35-40 m) uygulanabilecek
yüksek kapasiteli (∼5-7 MW) rüzgar enerjisi türbinleri için önerilen
yenilikçi jacket temel sisteminin davranışı nihai taşıma kapsitesi açısından
incelenmiştir. Tek kazıklı standart jacket ile yakın mesafeli çift kazıklı
yenilikçi jacket temel sistemlerinin yatay yük taşıma kapasiteleri
karşılaştırılmıştır. Yatay yük kapasitesi tahmini için hiperbolik yöntem
kullanılmıştır. İnceleme suya doygun çok sıkı kum zemin ortamında ve statik
kombine yükleme koşullarında gerçekleştirilmiştir. Araştırma üç boyutlu sayısal
analiz yöntemine dayanmaktadır. Sonlu elemanlar modelinin doğrulaması
literatürde yer alan arazi deney sonuçları ile gerçekleştirilmiştir.
Parametrik analiz yöntemi ile kazık uzunluğu ve kazıklar arası mesafenin
yatay yük taşıma kapasitesi üzerindeki etkisi incelenmiştir. Sonuçlar
toplamda aynı kazık uzunluğuna sahip temel sistemi durumunda dahi çift kazık
kullanımının jacket temel siteminin deplasman birikimini önemli ölçüde
azalttığını ve yatay yük taşıma kapasitesini önemli dercede arttırdığını
göstermektedir.


References

  • Referans1 Fraunhofer-Institut für Windenergie und Energiesystemtechnik (IWES) 2017. Windenergie Report Deutschland 2016. Fraunhofer Verlag, Stuttgart, 120s.
  • Referans2 Bhattacharya,S., Nikitas, N., Garnsey, J., Alexander, N.A., Cox, J., Lombardi,D. 2013. Observed Dynamic Soil-Structure Interaction in Scale Testing of Offshore Wind Turbine Foundations, Soil Dynamics and Earthquake Engineering, Cilt. 54, s. 47-60. DOI: 10.1016/j.soildyn.2013.07.012
  • Referans3 Frederiksen, H. 2008. Offshore Foundations for Windfarms. Project Report National University of Singapore, Singapore, 37s.
  • Referans4 Hung, L.C., Kim, S-R. 2014. Evaluation of Combined Horizontal-Moment Bearing Capacities of Tripod Bucket Foundations in Undrained Clay, Ocean Engineering, Cilt. 85, s. 100-109. DOI: 10.1016/j.oceaneng.2014.04.025
  • Referans5 Tran, N.X., Hung L.C., Kim S-R. 2017. Evaluation of Horizontal and Moment Bearing Capacities of Tripod Bucket Foundations in Sand, Ocean Engineering, Cilt. 140, s. 209-221. DOI: 10.1016/j.oceaneng.2017.05.012
  • Referans6 Brinkgreve R.B.J., Engin E., Swolfs W.M. (Editörler) 2013. Plaxis 3D User’s Manuel, Plaxis bv Delft, 46s. Referans7 Benz, T. 2007. Small Strain Stiffness of Soils and Its Numerical Consequences. Stuttgart Üniversitesi, Geoteknik Enstitüsü, 179s, Stuttgart.
  • Referans8 Reese, L.C., Cox, W.R., Koop F.D. 1974. Analysis of Laterally Loaded Piles in Sand. Proceedings of the Offshore Technology Conference, 6-8 Mayıs, Texas, 95-105.
  • Referans9 Akdag, C.T. 2016. Behavior of Closely Spaced Double-Pile-Supported Jacket Foundations for Offshore Wind Energy Converters under Monotonic Loading, Applied Ocean Research, Cilt. 58, s. 164-177. DOI: 10.1016/j.apor.2016.04.008
  • Referans10 Lee, H. H., Sun, Y. L. 1994. Yielding Load and Effective Length of Laterally Loaded Vertical Pile, Journal of the Chinese Institute of Civil and Hydraulic Engineering, Cilt. 6 , s. 161-167.
  • Referans11 Briaud, J. L. 1997. SALLP: Simple Approach for Lateral Loads on Piles, Journal of the Geotechnical and Geoenvironmental Engineering Division, ASCE, Cilt. 123, s. 958-964. DOI:10.1061/(ASCE)10900241(1997)123:10(958)
  • Referans12 Meyerhof, G. G., Sastry, V. V. R. N., Yalcin, A. S. 1988. Lateral Resistance and Deflection of Flexible Piles, Canadian Geotechnical Journal, Cilt. 25, s. 511-5222. DOI: 10.1139/t88-056
  • Referans13 Gleser, S. 1984. Generalized Behavior of Laterally Loaded Vertical Piles, ss 239-243. Langer, J.A., Mosley, E.T., Thompson, C.D., ed. 1984. Laterally Loaded Deep Foundations: Analysis and Performance, ASTM Special Publications, 251s.
  • Referans14 Slack, D. C., Walker, J. N. 1970. Deflections of Shallow Pier Foundations, Journal of the Soil Mechanics and Foundations Division, ASCE, Cilt. 96, s. 1143-1157.
  • Referans15 Villalobos FA, Byrne BW, Houlsby GT. 2005. Moment loading of caissons installed in saturated sand. In: Proceedings of international symposium on frontiers in Geotechnics, ISFOG. University of Western, 19-21 Eylül, Perth, 411-16.
  • Referans16 Manoliu I, Dimitriu DV, Radulescu N, Dobrecu GH. 1985. Load–deformation Characteristics of Drilled Piers. Proceedings of 11th International Conference on Soil Mechanics and Foundation Engineering, 12-16 Ağustos, San Francisco, 1553-1558.
  • Referans17 Achmus M., Kuo Y-S., Abdel-Rahman K. 2009. Behavior of Monopile Foundations under Cyclic Lateral Load, Computers and Geotechnics, Cilt. 36, s. 725-735. DOI: 10.1016/j.compgeo.2008.12.003
  • Referans18 Achmus M., Akdag C.T., Thieken K. 2013. Load-bearing Behavior of Suction Bucket Foundations in Sand, Applied Ocean Research, Cilt. 43, s. 157-165. DOI: 10.1016/j.apor.2013.09.001
  • Referans19 Akdag, C.T. 2017. Response of a Novel Supporting System for Offshore Wind Energy Converters. 3. Uluslararası Zemin-Yapı Etkileşimi Sempozyumu, 18-20 Ekim, İzmir, 383-393.
There are 18 citations in total.

Details

Primary Language Turkish
Subjects Engineering
Journal Section Articles
Authors

Cihan Taylan Akdağ 0000-0001-8615-0488

Publication Date May 21, 2019
Published in Issue Year 2019

Cite

APA Akdağ, C. T. (2019). Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen Ve Mühendislik Dergisi, 21(62), 345-355. https://doi.org/10.21205/deufmd.2019216203
AMA Akdağ CT. Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi. DEUFMD. May 2019;21(62):345-355. doi:10.21205/deufmd.2019216203
Chicago Akdağ, Cihan Taylan. “Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi”. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen Ve Mühendislik Dergisi 21, no. 62 (May 2019): 345-55. https://doi.org/10.21205/deufmd.2019216203.
EndNote Akdağ CT (May 1, 2019) Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi 21 62 345–355.
IEEE C. T. Akdağ, “Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi”, DEUFMD, vol. 21, no. 62, pp. 345–355, 2019, doi: 10.21205/deufmd.2019216203.
ISNAD Akdağ, Cihan Taylan. “Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi”. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi 21/62 (May 2019), 345-355. https://doi.org/10.21205/deufmd.2019216203.
JAMA Akdağ CT. Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi. DEUFMD. 2019;21:345–355.
MLA Akdağ, Cihan Taylan. “Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi”. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen Ve Mühendislik Dergisi, vol. 21, no. 62, 2019, pp. 345-5, doi:10.21205/deufmd.2019216203.
Vancouver Akdağ CT. Açık Deniz Rüzgar Enerjisi Türbinleri Grup Kazıklı Jacket Temel Sistemi Yük Taşıma Kapasitesi. DEUFMD. 2019;21(62):345-5.

Dokuz Eylül Üniversitesi, Mühendislik Fakültesi Dekanlığı Tınaztepe Yerleşkesi, Adatepe Mah. Doğuş Cad. No: 207-I / 35390 Buca-İZMİR.