海上风电大尺度筒型基础分舱优化设计
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摘要
以世界第一台可整体安装的风机结构"CBF-3-150"为对象,通过气浮理论和MOSES软件分析不同分舱形式下大尺度筒型基础的浮稳性参数,认为对大尺度筒型基础进行分舱可以明显提高结构的浮稳性;分舱大小会影响大尺度筒型基础的初稳性高和面积比;在内舱半径相同的条件下,四边形和六边形内舱分舱形式较之于有相同分舱数的圆形内舱分舱更优;对于该大尺度筒型基础结构,建议采用外接圆半径为7.5 m的正六边形分舱形式。
Taking CBF-3-150,the world's first structure of wind turbines with overall installation for example,the stability parameters of large-scale bucket foundation with different styles of subdivision are studied by the air-floating theory and analytic software MOSES to get the optimal designs of subdivision. It is shown that the floating stability of large-scale bucket foundation can be significantly improved by the subdivision in the bucket; the scale of the subdivision has an impact on the meta-centric height and area ratio K,and under the condition of the radius is the same,the amplitude of quadrilateral and hexagonal subdivision are greater than that of round subdivision which have the same subdivisions. The proposed style of subdivision of this largescaled bucket foundation is regular hexagon,the circumscribe radius of which is 7. 5m.
Taking CBF-3-150,the world's first structure of wind turbines with overall installation for example,the stability parameters of large-scale bucket foundation with different styles of subdivision are studied by the air-floating theory and analytic software MOSES to get the optimal designs of subdivision. It is shown that the floating stability of large-scale bucket foundation can be significantly improved by the subdivision in the bucket; the scale of the subdivision has an impact on the meta-centric height and area ratio K,and under the condition of the radius is the same,the amplitude of quadrilateral and hexagonal subdivision are greater than that of round subdivision which have the same subdivisions. The proposed style of subdivision of this largescaled bucket foundation is regular hexagon,the circumscribe radius of which is 7. 5m.
引文
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[3]YUN G J,MACONOCHIE A,OLIPHANT J,et al.Undrained capacity of surface footings subjected to combined VHT loading[C].The Nineteenth International Offshore and Polar Engineering Conference.International Society of Offshore and Polar Engineers,2009.
[4]别社安,时钟民.气浮结构的静浮态分析[J].中国港湾建设,2000(6):18-23.
[5]沈国光,项伟征.关于气浮筒群结构的静稳性[J].海洋工程,2002,20(1):80-83.
[6]丁红岩,黄旭,张浦阳,等.筒型基础平台气浮拖航的影响因素分析[J].工程力学,2012,29(10):193-198.
[7]丁红岩,刘建辉.筒型基础海洋平台拖航研究-波浪影响分析[J].船舶力学,2009(1):19-26.
[8]张浦阳,丁红岩,乐丛欢,等.海上风电大尺度复合筒型基础拖航特性分析[J].东南大学学报(英文版),2013,29(3):300-304.
[9]范庆来,栾茂田.VHT荷载空间内海上风机桶形基础破坏包络面特性分析[J].土木工程学报,2010,43(4):113-118.
[10]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.
[11]别社安,任增金,李增志.结构气浮的力学特性研究[J].应用力学学报,2004,21(1):68-71.
[12]练继建,陈飞,杨旭,等.海上风机复合筒型基础负压沉放调平[J].天津大学学报(自然科学与工程技术版),2014,47(11):987-993.
[2]KIM S R.Evaluation of vertical and horizontal bearing capacities of bucket foundations in clay[J].Ocean engineering,2012,52:75-82.
[3]YUN G J,MACONOCHIE A,OLIPHANT J,et al.Undrained capacity of surface footings subjected to combined VHT loading[C].The Nineteenth International Offshore and Polar Engineering Conference.International Society of Offshore and Polar Engineers,2009.
[4]别社安,时钟民.气浮结构的静浮态分析[J].中国港湾建设,2000(6):18-23.
[5]沈国光,项伟征.关于气浮筒群结构的静稳性[J].海洋工程,2002,20(1):80-83.
[6]丁红岩,黄旭,张浦阳,等.筒型基础平台气浮拖航的影响因素分析[J].工程力学,2012,29(10):193-198.
[7]丁红岩,刘建辉.筒型基础海洋平台拖航研究-波浪影响分析[J].船舶力学,2009(1):19-26.
[8]张浦阳,丁红岩,乐丛欢,等.海上风电大尺度复合筒型基础拖航特性分析[J].东南大学学报(英文版),2013,29(3):300-304.
[9]范庆来,栾茂田.VHT荷载空间内海上风机桶形基础破坏包络面特性分析[J].土木工程学报,2010,43(4):113-118.
[10]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.
[11]别社安,任增金,李增志.结构气浮的力学特性研究[J].应用力学学报,2004,21(1):68-71.
[12]练继建,陈飞,杨旭,等.海上风机复合筒型基础负压沉放调平[J].天津大学学报(自然科学与工程技术版),2014,47(11):987-993.