桩筒组合基础地基承载力特性研究  

RESEARCH ON BEARING CAPACITY CHARACTERISTICS OF PILE-BUCKET COMBINED FOUNDATION

作　　者：王海军[1,2] 余洪晨 闫晓荣[3] 刘润[1,2] Wang Haijun;Yu Hongchen;Yan Xiaorong;Liu Run(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,China;Airport College,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350 [2]天津大学建筑工程学院,天津300350 [3]中国民航大学机场学院,天津300300

出　　处：《太阳能学报》2021年第9期312-317,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金51508558;科技部重点领域创新团队(2014RA4031);天津市自然科学基金(18JCYBJC22300)。

摘　　要：针对一处30 m水深海域风电场提出一种新型海上风电桩筒组合基础结构,并采用ABAQUS有限元软件对此新型基础的地基承载能力进行精细数值模拟。研究结果表明,加入短桩可调整分舱板的受力使分舱板的厚度降低和提高基础的抗倾覆能力,在该工程中可降低法兰处水平度18.75%。通过大量计算后得出该新型基础在多维加载下的地基承载力破坏包络线或面。在实际工程中可根据受力状态与包络线或面的相对位置关系,评估基础的安全性。In this paper,a pile-bucket combined foundation for offshore wind turbines was proposed.It can be applied to 30 m water depth.And the software ABAQUS was used to simulate the bearing capacity of the foundation.The results have shown that the short piles can reduce the thickness of the subdivision boards and improve the anti-overturning ability of this foundation.The inclination of the flange can be reduced by 18.75%in the project.Then,under the multi-dimensional loading,the failure envelope line or surface of bearing capacity of this foundation was obtained through a large number of calculations.In practical engineering,safety and stability can be further evaluated according to the relative position’s relationship between the force state and envelope line or surface.

关 键 词：海上风电 复合加载 承载特性 桩筒组合基础 破坏包络面 

分 类 号：TU447[建筑科学—岩土工程]