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。
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 bearingcapacity of USAF under vertical load,bending moment load and combined loads were studied using finiteelement 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 USAFcan increase its bearing capacity,and it has a more obviously improve with skirt. Besides,USAF has theproperties of rigid short pile and it can rotate around one point of pile. As a result,the failure envelopeof USAF and which law varied with draw ratio of pile was obtained. A serious conclusions conducted fromnumeric calculation can provide a reference for the generalization and apply of USAF.
作者
刘红军
王荃迪
潘晨晨
常季青
LIU Hongjun WANG Quandi PAN Chenchen CHANG Jiqing(Shandong Provincial Key Laboratory of Marine Enviroment and Geological Engineering, Qingdao 266100, China College of EnvironmentaI Science and Engineering, Ocean University of China, Qingdao 266100, China Qingdao Geotechnical Investigation and Surveying Research Institute, Qingdao 266032, China)
出处
《水利学报》
EI
CSCD
北大核心
2016年第10期1339-1344,共6页
Journal of Hydraulic Engineering
基金
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)
作者简介
刘红军（1966-），男，江苏靖江人，教授，博导，主要从事海洋工程地质、岩土工程的研究。E-mail：hongjun@ouc．edu．cn
