为明确附属构件对桩腿冰荷载的影响，本文通过海冰加载试验开展了，带2根附属构件不同遮蔽情况下的冰力变化规律研究。试验结果表明，带2根附属构件对孤立桩腿极值冰荷载影响系数在0.77～1.4之间；当附属构件在桩腿的迎冰面时，附属构件具有破冰作用，极值冰力较孤立桩腿减小了23%；当冰板穿过附属构件与桩腿之间时，桩腿与附属构件相互干扰，使冰板的局部破坏特征发生改变，影响结构的极值冰力；相比于工程设计中通常使用的代数相加和等效直径计算方法，试验测量得到的带附属构件桩腿实际极值冰力折减系数在0.53～0.9之间。研究成果可以为带附属构件平台桩腿的冰荷载评估提供理论参考。
To clarify the impact of accessory components on ice loads on the legs, ice loading experiments were conducted to investigate the variations in ice forces under different shadowing conditions of the accessory components. The experimental results reveal that the influence coefficient of two accessory components on the extreme ice loads of isolated legs ranges between 0.77～1.4. When accessory components are positioned on the ice-facing side of the legs, they exhibit ice-breaking properties, reducing extreme ice forces by 23% compared to isolated legs. When ice plates pass between the accessory components and the legs, mutual interference alters the local failure characteristics of the ice plates, thereby affecting the extreme ice forces on the structure. Compared to the algebraic summation and equivalent diameter calculation methods commonly used in engineering design, the experimentally measured reduction coefficients for actual extreme ice forces on legs with accessory components range between 0.53～0.9. The research results can provide reference for the evaluation of ice load on platform pile legs with attached components.
2025,47(17): 170-176 收稿日期：2024-12-13
DOI：10.3404/j.issn.1672-7649.2025.17.027
分类号：U663.7
基金项目：国家自然科学基金资助项目（52071055）；中国海洋石油有限公司科技课题（KJZH-2023-2402）
作者简介：李伟(1988-),男,博士,高级工程师,研究方向为海洋油气与海上新能源结构设计
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