海上风机加翼单桩基础承载性能研究  

Bearing Capacity of Finned Pile Foundation for Offshore Wind Turbine

作　　者：李容娜 陈莉 张欢 周楠[1] LI Rongna;CHEN Li;ZHANG Huan;ZHOU Nan(College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098

出　　处：《河南科学》2021年第6期948-953,共6页Henan Science

基　　金：高等学校学科创新引智计划(B12032)。

摘　　要：加翼单桩基础是一种新型的海上风机基础.为了分析翼板对加翼单桩基础承载性能的影响,利用ABAQUS建立有限元三维模型,对比分析同桩长及同钢量的普通单桩基础与加翼单桩基础的水平、竖向及弯矩承载性能,并且探讨不同加载方向、土体弹性模量和摩擦系数的设置对加翼单桩基础承载性能的影响规律,为加翼单桩基础的设计和推广应用提供技术支撑.结果表明:翼板能够使基础刚度增加,显著降低基础的水平位移及沉降,提高整体的承载能力;增加入土桩长改善桩基承载性能的效果比增设翼板更明显;30°的水平加载方向最能增益四个翼板对基础水平承载能力的贡献;土体弹性模量的改变对加翼单桩基础的桩身变形影响十分显著.The finned pile foundation is a new offshore wind turbine foundation type.In order to analyze the influence of ABAQUS.We compare and analyze the horizontal,vertical and bending moment bearing capacity of the common monopile foundation and the finned pile foundation with the same pile length and the same steel amount.The influence of different which provides technical support for the design and application of finned pile foundation.The results show that the fins and improve the overall bearing capacity.The effect of increasing the pile length on improving the bearing capacity of pile foundation is more obvious than that of adding fins.The horizontal loading direction of 30°is the best way to gain the contribution of the four fins to the horizontal bearing capacity of the foundation.The change of soil elastic modulus has a significant effect on the pile deformation of finned pile foundation.

关 键 词：海上风机基础 ABAQUS 翼板 承载性能 弹性模量 

分 类 号：TU476[建筑科学—结构工程]