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用循环三轴试验分析海上风力发电机单桩基础侧向位移 被引量:28

Estimation of lateral deformation of monopile foundations by use of cyclic triaxial tests
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摘要 为了开发洁净的再生能源,海上风力发电已成为欧洲各国积极研究的重点。一个足以承受长期波浪及风力的基础设施是让风力发电设施在使用年限内正常运转的必要条件。目前欧洲海上风力发电设计案例中,大口径的钢管桩是一种最常被运用的海上风力发电机基础型式。然而,目前工程界普遍使用的p–y曲线分析法并不适用于评估此种大口径单桩受长期侧向力的行为。特别针对砂性土壤,提出了应用室内三轴循环试验的结果评估单桩在单向循环侧向力下的变形方法。应用室内循环三轴试验所得的塑性应变增加量推求土壤的割线衰减刚度,再导入三维有限元素数值模型的方法,可以得到桩身在循环侧向力下的位移。此种方法非常适用于海上风力发电机单桩基础在均匀及层状土壤中侧向行为的初步工程设计。 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.
出处 《岩土工程学报》 EI CAS CSCD 北大核心 2009年第11期1729-1734,共6页 Chinese Journal of Geotechnical Engineering
关键词 海上风力发电 大口径单桩 循环侧向力 循环三轴试验 offshore wind energy monopile cyclic lateral load cyclic triaxial test
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参考文献10

  • 1ABDEL-RAHMEN K,ACHMUS M.Finite element modelling of horizontally loaded monopile foundations for offshore wind energy converters in Germany[].Proceedings of the International Symposium on Frontiers in Offshore Geotechnics (ISFOG).2005 被引量:1
  • 2ACHMUS M,ABDEL-RAHMEN K,KUO Y S.Design of monopile foundations for offshore wind energy plants[].th Baltic Sea Geotechnical Conference.2008 被引量:1
  • 3HUURMAN M.Development of traffic induced permanent strains in concrete block pavements[].Heron.1996 被引量:1
  • 4GOTSCHOL A.Ver?nderlich elastisches und plastisches Verhalten nichtbindiger B?den und Schotter unter zyklisch-dynamischer Beanspruchung[]..2002 被引量:1
  • 5WERKMEISTER S.Permanent deformation behaviour of unbound granular materials in pavement constructions[]..2004 被引量:1
  • 6COX W R,REESE L C,GRUBBS B R.Field testing of laterally loaded piles in sand[].Proceedings of the VI Annual Offshore Technology Conference.1974 被引量:1
  • 7REESE L C,COX W R,KOOP F D.Analysis of laterally loaded piles in sand[].Proceedings of the VI Annual Offshore Technology Conference.1974 被引量:1
  • 8ACHMUS M,ABDEL-RAHMEN K,PERALTA P.Untersuchungen zum tragverhalten von monopiles für die gründung von offshore-windenergieanlagen[].Pfahlsymposium.2005 被引量:1
  • 9LESNY K,RICHWIEN W,HINZ P.Bemessung von gründungen für offshore-windenergieanlagen[].symposium offshore-windenergie Bauund umwelttechnische Aspekte.2007 被引量:1
  • 10HETTLER A.Verschiebungen Starrer und elastischer Gründungsk?rper in Sand bei monotoner und zyklischer Belastung[]..1981 被引量:1

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