筒型基础预应力过渡段结构传力特性研究
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摘要
复合筒型基础是目前应用于海上风电工程中的一种新型基础型式,过渡段结构作为一种连接筒基和塔筒的结构形式在整个基础结构的传力体系中起到关键作用。基于大型有限元软件ABAQUS,建立2种典型的过渡段结构型式,具体分析不同过渡段结构在单调荷载及复合荷载作用下过渡段结构的应力响应及传力特性。计算结果表明:单调水平或竖向荷载作用下,带分舱板的钢筒直线型过渡段模型受力均匀,过渡段结构表现出更好的综合传力特性;单调弯矩荷载作用下,带分舱板的钢筒弧线型过渡段模型受力均匀,过渡段结构表现出更好的综合传力特性;复合荷载作用下,带分舱板的钢筒弧线型过渡段模型受力性能最好,过渡段结构的传力性能最优。
The composite bucket foundation in a new type of foundation for offshore wind engineering. Transition sectionbetween the tower and bucket foundation play a key role in the foundation transition system. Based on the large finiteelement software ABAQUS,two kinds of typical transition section in bucket foundation were setting up to research on theresponse of stress and transmission mechanism of force on the monotone ultimate load condition and composite loadingcase. The results showed that the linear transition section in steel bucket foundation with bulkheads is uniformly forcedand shows a better force transmission characteristic under the monotonic horizontal or vertical load. Under the monotonicbending load,the arc-transition section in steel bucket foundation with bulkheads is uniformly forced and shows a betterforce transmission characteristic. Under composite load,the arc-transition section in steel bucket foundation withbulkheads is uniformly forced and shows a better force transmission characteristic.
The composite bucket foundation in a new type of foundation for offshore wind engineering. Transition sectionbetween the tower and bucket foundation play a key role in the foundation transition system. Based on the large finiteelement software ABAQUS,two kinds of typical transition section in bucket foundation were setting up to research on theresponse of stress and transmission mechanism of force on the monotone ultimate load condition and composite loadingcase. The results showed that the linear transition section in steel bucket foundation with bulkheads is uniformly forcedand shows a better force transmission characteristic under the monotonic horizontal or vertical load. Under the monotonicbending load,the arc-transition section in steel bucket foundation with bulkheads is uniformly forced and shows a betterforce transmission characteristic. Under composite load,the arc-transition section in steel bucket foundation withbulkheads is uniformly forced and shows a better force transmission characteristic.
引文
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[9]Liu Run,Zhou Long,Lian Jijian,et al.Behavior of monopile foundations for offshore wind farms in sand[J].Journal of Waterway,Port,Coastal,and Ocean Engineering,2015,1943—5460.
[10]丁红岩,翟少华,张浦阳.海上风电大尺度顶承式筒型基础承载力特性有限元分析[J].工程力学,2013,30(6):124—133.[10]Ding Hongyan,Zhai Shaohua,Zhang Puyang.Finite element analysis of bearing capacity behavior of coverload-bearing large-scale bucket foundation for offshore wind turbines[J].Engineering Mechanics,2013,30(6):124—133.
[11]练继建,丁红岩,刘润.CBF-3-150海上风机复合筒型基础结构及施工关键技术[R].天津:天津大学,2010.[11]Lian Jijian,Ding Hongyan,Liu Run.The CBF-3-150key construction technology of composite bucket foundation in offshore wind turbine engineering[R].Tianjin,Tianjin University,2010.
[12]乐丛欢,丁红岩,张浦阳.分舱板对海上风机混凝土筒型基础承载模式的影响[J].工程力学,2013,30(4):429—434.[12]Le Conghuan,Ding Hongyan,Zhang Puyang.Influences of bulkheads on the bearing mode of concrete bucket foundation for offshore wind turbine[J].Engineering Mechanics,2013,30(4):429—434.
[13]杨峰,邢占清,符平,等.近海风机基础结构型式设计研究[J].水利水电技术,2009,(9):35—38.[13]Yang Feng,Xing Zhanqing,Fu Ping,et al.Research on foundation structure for offshore wind turbine[J].Water Resources and Hydropower Engineering,2009,(9):35—38.
[14]刘喜珠.海上风电大直径宽浅筒型基础结构设计及安全性研究[D].天津:天津大学,2010.[14]Liu Xizhu.Study on design and security of largediameter and wide-shallow bucket foundation for offshore wind power[D].Tianjin:Tianjin University,2010.
[15]Ding Hongyan,Liu Yonggang,Zhang Puyang.Model tests on the bearing capacity of wide-shallow composite bucket foundations for offshore wind tubbines in clay[J].Ocean Engineering,2015,103:114—122.
[16]Lian Jijian,Ding Hongyan,Zhang Puyang,et al.Design of large-scale prestressing bucket foundation for offshore wind turbines[J].Transactions of Tianjin University,2012,18(2):79—84.
[17]朱伯芳.有限元原理与应用[M].第2版.北京:中国水利水电出版社,1998.[17]Zhu Bofang.Principle and application of finite element method[M].2nd ed.Beijing:China Water Power Press,1998.
[2]李俊峰.风电形势及其前景展望[J].世界环境,2009,(4):18—20.[2]Li Junfeng.Wind energy and its prospect[J].WorldEnvironment,2009,(4):18—20.
[3]丁红岩,于瑞,张浦阳,等.海上风电大尺度预应力筒型基础结构预应力优化设计[J].天津大学学报,2012,45(6):473—482.[3]Ding Hongyan,Yu Rui,Zhang Puyang,,et al.Optimal design for priestess of large-scale bucket foundation for offshore wind turbine[J].Journal of Tianjin University,2012,45(6):473—482.
[4]尚景宏,罗锐,张亮.海上风电基础结构选型与施工工艺[J].应用科技,2009,36(9):7—12.[4]Shang Jinghong,Luo Rui,Zhang Liang.Foundation structure selection and construction process for offshore wind turbines[J].Applied Science and Technology,2009,36(9):7—12.
[5]Smith J E.Investigation of embedment anchors for deep ocean use[J].Naval Civil Engineering Laboratory,Technical Note,1966:33—52.
[6]Baerheim M,Hoberg L,Tjelta T I.Development and structural design of the bucket foundation for the Europipe jacket[A].Offshore Technology Conference,Huston[C],USA,OTC7792,1995,859—868.
[7]刘润,王磊,丁红岩,等.复合加载模式下不排水饱和软黏土中宽浅式筒型基础地基承载力包络线研究[J].岩土工程学报,2014,36(1):146—154.[7]Liu Run,Wang Lei,Ding Hongyan,et al.Failure envelops of large-diameter shallow buried bucket foundation in undrained saturated soft day clay under combined loading conditions[J].Chinese Journal of Geotechnical Engineering,2014,36(1):146—154.
[8]Liu Run,Chen Guangsi,Lian Jijian,et al.Vertical bearing behavior of the composite bucket shallow foundation of offshore wind turbines[J].Journal of Renewable&Sustainable Energy,2015,7(1):1—21.
[9]Liu Run,Zhou Long,Lian Jijian,et al.Behavior of monopile foundations for offshore wind farms in sand[J].Journal of Waterway,Port,Coastal,and Ocean Engineering,2015,1943—5460.
[10]丁红岩,翟少华,张浦阳.海上风电大尺度顶承式筒型基础承载力特性有限元分析[J].工程力学,2013,30(6):124—133.[10]Ding Hongyan,Zhai Shaohua,Zhang Puyang.Finite element analysis of bearing capacity behavior of coverload-bearing large-scale bucket foundation for offshore wind turbines[J].Engineering Mechanics,2013,30(6):124—133.
[11]练继建,丁红岩,刘润.CBF-3-150海上风机复合筒型基础结构及施工关键技术[R].天津:天津大学,2010.[11]Lian Jijian,Ding Hongyan,Liu Run.The CBF-3-150key construction technology of composite bucket foundation in offshore wind turbine engineering[R].Tianjin,Tianjin University,2010.
[12]乐丛欢,丁红岩,张浦阳.分舱板对海上风机混凝土筒型基础承载模式的影响[J].工程力学,2013,30(4):429—434.[12]Le Conghuan,Ding Hongyan,Zhang Puyang.Influences of bulkheads on the bearing mode of concrete bucket foundation for offshore wind turbine[J].Engineering Mechanics,2013,30(4):429—434.
[13]杨峰,邢占清,符平,等.近海风机基础结构型式设计研究[J].水利水电技术,2009,(9):35—38.[13]Yang Feng,Xing Zhanqing,Fu Ping,et al.Research on foundation structure for offshore wind turbine[J].Water Resources and Hydropower Engineering,2009,(9):35—38.
[14]刘喜珠.海上风电大直径宽浅筒型基础结构设计及安全性研究[D].天津:天津大学,2010.[14]Liu Xizhu.Study on design and security of largediameter and wide-shallow bucket foundation for offshore wind power[D].Tianjin:Tianjin University,2010.
[15]Ding Hongyan,Liu Yonggang,Zhang Puyang.Model tests on the bearing capacity of wide-shallow composite bucket foundations for offshore wind tubbines in clay[J].Ocean Engineering,2015,103:114—122.
[16]Lian Jijian,Ding Hongyan,Zhang Puyang,et al.Design of large-scale prestressing bucket foundation for offshore wind turbines[J].Transactions of Tianjin University,2012,18(2):79—84.
[17]朱伯芳.有限元原理与应用[M].第2版.北京:中国水利水电出版社,1998.[17]Zhu Bofang.Principle and application of finite element method[M].2nd ed.Beijing:China Water Power Press,1998.