中国工程科学Issue(8)：69-73,5.
锚杆关键参数对锚杆重力式海上风机基础承载特性的影响
Effects of key parameters of anchor on bearing behavior of gravity foundation with anchors for offshore wind turbines
摘要
Abstract
A novel type of offshore wind turbine foundation,which is named gravity founda tion with anchors,has been proposed recently. The effects of key parameters of anchor on bea ring behavior of this type of foundation were investigated in this study by carrying out the finite element analysis. It was found that increasing the number of anchors not only improves the bea ring capacity of foundation but also reduces the axial force of each anchor. However,when the number of anchors is increased to certain extent,the spacing between two anchors becomes too small and then causing the superposition of stress and reducing the bearing efficiency of an chors. Therefore,the number of anchors should be optimized. Regarding the effect of diameter of anchors,the analysis showed that the bearing capacity of foundation increases almost linear ly with the diameter of anchors. In other words,the larger the diameter of anchors is,the great er contribution for the stability of foundation provided by the anchors. Therefore,the diameter of anchors should be as large as possible. It was also found that the increase in the diameter of anchor rings is equivalent to the increase in the arm of anti moment provided by the anchors. However,since the anchors can change equivalent stiffness of the subsoil,the bearing capacity under vertical loading increases firstly but decreases subsequently as the diameter of anchor ring increases. Consequently,it is essential to evaluate bearing capacity from various aspects and de termine appropriate diameter of anchor rings for design.关键词
海上风机/重力式基础/锚杆/三维有限元分析Key words
offshore wind turbine/gravity foundation/anchor/three-dimensional finite ele-ment analysis分类
海洋科学引用本文复制引用
王尔贝,陈锐,霍宏斌..锚杆关键参数对锚杆重力式海上风机基础承载特性的影响[J].中国工程科学,2014,(8):69-73,5.基金项目
国家自然科学青年基金项目（50909030）；深圳市龙岗区软科学研究项目（深龙科[2011]3）；中国水利水电科学研究院科研专项 （）
