| 刘红军,王荃迪,潘晨晨,常季青.海上风电伞式吸力锚基础承载性能研究[J].水利学报,2016,47(10):1339-1344 |
| 海上风电伞式吸力锚基础承载性能研究 |
| The research on bearing capacity of umbrella suction anchor foundation for offshore wind power |
| 投稿时间：2016-04-25 |
| DOI：10.13243/j.cnki.slxb.20160426 |
| 中文关键词: 伞式吸力锚基础 弯矩荷载 垂向荷载 破坏包络线 ABAQUS |
| 英文关键词: Umbrella Suction Anchor Foundation bending moment load vertical load failure envelope ABAQUS |
| 基金项目:国家自然科学基金资助项目（4152247）；山东省科技攻关资助项目（2014GGX104007） |
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| 中文摘要: |
| 针对在海上风机基础应用过程中遇到的问题，提出了新型伞式吸力锚基础（USAF），结合其实际条件下的受力特点，采用大型通用有限元软件ABAQUS对其在垂向荷载V和弯矩荷载M以及V-M联合作用下的受力变形特点进行分析。分析中将位移作为失效破坏标准，采用位移加载法和固定位移比加载法分别进行单调加载和联合加载。结果表明锚枝、筒裙的增加可以一定程度的提高USAF的承载性能，其中锚枝的增加对承载性能提高的并不明显，筒裙对承载性能的提高较为明显；弯矩荷载作用下USAF具有刚性短桩的性质并且会发生旋转；在V-M联合加载作用下得到了USAF的破坏包络线以及包络线随USAF主筒长径比的变化规律。通过数值模拟得到了以上结论可以为USAF的推广和应用提供一定的参考。 |
| 英文摘要: |
| As the disadvantages in using of foundation for offshore wind power were met, a new type Um-brella Suction Anchor Foundation(USAF) was presented. Considering its features under loads, the bearing capacity of USAF under vertical load, bending moment load and combined loads were studied using finite element software ABAQUS in this paper. The displacement was conducted as failure criterion, and the dis-placement loading method and fixed displacement ratio procedure were respectively used for monotonic load-ing and combined loading. The results show that to a certain extent anchor branches and skirt of USAF can increase its bearing capacity, and it has a more obviously improve with skirt. Besides, USAF has the properties of rigid short pile and it can rotate around one point of pile. As a result, the failure envelope of USAF and which law varied with draw ratio of pile was obtained. A serious conclusions conducted from numeric calculation can provide a reference for the generalization and apply of USAF. |
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