单柱复合筒型基础是中国国内自主研发的新型海上风电基础结构型式,以海上风电单柱复合筒型基础为研究对象,通过现场原型试验的方法,对首批海上风电单柱复合筒型基础的沉放过程进行分析,并提供现场施工监测数据。研究结果表明:单柱复合筒型基础可实现吸力安装下沉,且在调平上具有极强的可控性,可为筒型基础今后的施工及沉放研究提供重要的参考数据。
Abstract
The single-column composite bucket foundation is a new type of offshore wind turbine foundation developed independently in China. This paper takes the single-column composite cylinder foundation for offshore wind power as the research object, and analyses the sinking process of the first single-column composite bucket foundation for offshore wind power by means of field prototype tests, and provides field construction monitoring data. The results show that the single-column composite bucket foundations can be installed and sunk with suction and are highly controllable in terms of levelling, which can provide important reference data for future construction and sinking studies of bucket foundations.
关键词
海上风电 /
沉贯深度 /
倾角监测 /
单桩复合筒型基础 /
沉贯舱压
Key words
offshore wind turbines /
penetration depth /
angle measurement /
single-column bucket foundation /
sinking pressure
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 朱黎. 海上风电为可再生能源发展的新领域[J]. 新能源科技, 2021(12): 2-3.
ZHU L.Offshore wind power as a new frontier for renewable energy development[J]. New energy technology, 2021(12): 2-3.
[2] 张浦阳, 魏宇墨, 校建东, 等. 复合筒型基础在粉土中的抗扭承载特性研究[J]. 太阳能学报, 2021, 42(9): 270-278.
ZHANG P Y, WEI Y M, XIAO J D, et al.Torsional bearing capacity of composite bucket foundation in silty sand[J]. Acta energiae solaris sinica, 2021, 42(9): 270-278.
[3] 贾楠. 海上风电单筒多舱型筒型基础沉放调平机理及沉贯阻力研究[D]. 天津: 天津大学, 2017.
JIA N.Analysis on penetrating-levelling mechanism and penetration resistance of bucket foundation with inner compartments for offshore wind turbines[D]. Tianjin: Tianjin University, 2017.
[4] 张浦阳, 黄宣旭. 海上风电吸力式筒型基础应用研究[J]. 南方能源建设, 2018, 5(4): 1-11.
ZHANG P Y, HUANG X X.Application research on suction bucket foundation for offshore wind power[J]. Southern energy construction, 2018, 5(4): 1-11.
[5] TJELTA T I.Geotechnical experience from installation of the Europipe jacket with bucket foundation[R]. OTC7795,1995: 897-908.
[6] BYE A, ERBRICH C, TJELTA T I, et al.Geotechnical design of bucket foundations[R]. OTC7793, 1995: 869-883.
[7] TRAN M N, RANDOLPH M F.Variation of suction pressure during caisson installation in sand[J]. Geotechnique, 2008, 58(1): 1-11.
[8] WATSON P G, GAUDIN C, SENDERS M, et al.Installation of suction caissons in layered soil[C]//Physical Modelling in Geotechnics, 6th ICPMG′06-Proceedings of the 6th International Conference on Physical Modelling in Geotechnicsthis, Hong Kong, China, 2006: 685-691.
[9] TRAN M N, RANDOLPH M F, DAVID W A.Study of seepage flow and sand plug loosening in installation of suction caissons in sand[C]//Proceedings of 15th International Offshore and Polar Engineering Conference, Seoul: International Society of Offshore and Polar Engineers, 2005: 516-521.
[10] TRAN M N.Installation of suction caisson in dense sand and the influence of silt and cemented layers[D]. Sydney: University of Sydney, 2005.
[11] TRAN M N, RANDOLPH M F, AIREY D W.Installation of suction caissons in sand with silt layers[J]. Journal of geotechnical and geoenvironmental engineering, 2007, 133(10): 1183-1191.
[12] DNVGL-ST-0126, Support structures for wind turbines[S].
[13] API RP 2SK, Recommended practice for design and analysis of station keeping systems for floating structures[S].