双点异向循环荷载下吸力式四桶型基础承载特性实验

吸力式桶型基础安装简便、施工周期短,有利于节约成本,在海上风电行业的应用逐渐增多.但实际海洋环境复杂多变,风、波浪荷载的作用方向往往不尽相同.考虑到实际工程中可能出现的此类复杂海况,进行了不同荷载夹角下的双点循环荷载模型实验.选取某海域原型土,探究四桶型基础结构在不同风、浪夹角的循环荷载作用下的承载性能,研究在不同工况下基础承载性能的变化规律.结果表明,当两类荷载存在一定的荷载夹角时,基础处于更危险的状态;建议在该地质条件下,当风机处于正常服役状态时,考虑不同的循环荷载夹角对四桶型风机基础承载性能的影响.

Experiment on the bearing characteristics of suction four-bucket foundation under double-point heterotrophic cyclic loads

With the advantages of simple installation, short construction cycle and low cost, the application of suction bucket foundation in offshore wind power industry is increasing generally. However, because of the complex and changeable marine environment, the directions of wind and wave loads are often not the same. These complicated sea conditions that occurs in the practical engineering projects need to be considered. Therefore, the test of suction four-bucket foundation under double-point heterotrophic cyclic loads is carried out. The prototype soil of a certain sea area is selected, and the bearing capacity of the four-bucket foundation is explored. And the change rules of the bearing capacity of the foundation are analyzed. The test results show that the bearing capacity of the foundation is weaker when there is an angle between the two loads. It can be seen that, under normal operating conditions, the influence of cyclic loads on the foundation with different load angles should be valued.