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    赵海盛

    • 副教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:南洋理工大学
    • 学位:博士
    • 所在单位:水利工程系
    • 学科:水工结构工程
    • 办公地点:大连理工大学 工程抗震试验大厅209房间
    • 联系方式:hzhao@dlut.edu.cn
    • 电子邮箱:HZHAO@dlut.edu.cn

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    Hot-spot stress caused by out-of-plane bending moments of three-planar tubular Y-joints

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    论文类型:期刊论文

    发表时间:2020-07-01

    发表刊物:APPLIED OCEAN RESEARCH

    收录刊物:SCIE

    卷号:100

    ISSN号:0141-1187

    关键字:Hot-spot stress; Three-planar tubular joints; Out-of-plane bending; Multi-planar interaction factor; Stress concentration factor

    摘要:Tripod substructures have been widely used in China for building offshore wind turbines (OWTs); correspondingly, three-planar tubular Y-joints have gained considerable attention, especially in the fatigue design. The out-of-plane bending moment load is a classical load type for steel tubular joints based on the mechanical analysis of the whole structure. This study examines the performance of hot-spot stresses (HSSs) in three-planar tubular Y-joints subject to out-of-plane bending moments. First, the HSS expression of three-planar tubular Y-joints is presented. Test research is performed to discover strain distribution patterns and then to validate the finite element (FE) models. Using this FE method, a dataset composed of 1920 cases is assembled and a set of design equations are thereafter derived after a series of analyses of geometric parameters. An evaluation based on a recognized acceptance criterion of proposed parametric equations is carried out.