基于竖向地基梁法的海上风电单桩基础结构优化  

Optimum Calculation of Single Pile Foundation for Offshore Wind Power Based on Vertical Foundation Beam Method

作　　者：孟京津 别社安[1] 陈强[2] 何福渤[2] Meng Jingjin;Bie She’an;Chen Qiang;He Fubo(College of Architecture,Tianjin University,Tianjin 300354,China;Tianjin Port&Channel Engineering Co.,Ltd.,Tianjin 300457,China)

机构地区：[1]天津大学建筑工程学院,天津300354 [2]天津港航工程有限公司,天津300457

出　　处：《港工技术》2023年第2期35-38,48,共5页Port Engineering Technology

基　　金：国家自然基金项目(51779171)。

摘　　要：本文提出了一种针对海上风电单桩基础结构计算的改进竖向地基梁法,并对单桩基础结构进行了优化计算。对单桩基础结构采用竖向地基梁法计算,基于m法计算土抗力,限制浅层土抗力的极限值不能超过极限土压力。结合工程情况,利用传统竖向地基梁法与改进方法,对单桩基础结构进行了优化计算,两种方法的计算结果存在一定差异,改进计算方法所得最大泥面水平位移增大34.6%。对于变形控制较为严格的海上风电桩基础结构,限制浅层土抗力的极限值不能超过极限土压力并使用改进方法对单桩结构进行计算是必要的。A modified method of vertical foundation beam is proposed for the calculation of single pile foundation for offshore wind power,and the calculation of single pile foundation structure is optimized.Vertical foundation beam method is used to calculate single pile foundation structure,soil resistance is calculated based on method-m,and the ultimate value of shallow soil resistance cannot exceed ultimate soil pressure.Combined with engineering practice,the calculation of single pile foundation structure is optimized by using the traditional vertical foundation beam method and the modified one.The differences between the calculation results are as follows.The maximum horizontal displacement of soil surface increases by 34.6%based on the modified calculation method.For offshore wind power supported on pile foundation which requires strict control of deformation,the ultimate value of shallow soil resistance must not exceed ultimate earth pressure,the modified method shall be used to calculate single pile structure in advance.

关 键 词：海上风电 单桩基础 M法 极限土压力 

分 类 号：TV314[水利工程—水工结构工程]