在2层流体基本假设下，通过实验分别研究不同波浪入射角下，作用在半潜式平台立柱群和沉箱群上的内孤立波载荷特性。实验结果表明：在任意迎流角下，作用在立柱和沉箱各部分的载荷峰值均随波幅增大而线性增大，并且波的传播方向对力的峰值有显著影响。在相同波幅、相同分层比下，当来波方向与平台中纵剖面不平行时，沉箱群水平载荷峰值在迎流角为90°时达到最大；当来波方向与平台中纵剖面平行时，水平载荷峰值最小。同时，波的传播方向对沉箱群垂向力以及立柱群水平载荷的峰值影响可以忽略不计。
Based on the two-layer fluid systems，a series of experiments were conducted to study the forces acting on the columns and caissons of the semi-submersible platform induced by internal solitary waves with different wave propagation directions. Results show that, the force peak on both columns and caissons part increases linearly with the increase ofwave amplitude under different incident angles. Moreover, the propagationdirection of the ISW has a significant effect on the force peak. Under the same amplitude and layer thickness ratio, if the wave propagation is not parallel to the longitudinal of the platform, the force peak willreach the maximum at the incident angle of 90°. When the wave direction is parallel to the longitudinal profile of the platform, the horizontal forces is the minimum. In addition, the influence of the wavepropagation directionon the vertical forces of the caissonsand the horizontal forces on the columns is negligible.
2022,44(2): 129-134 收稿日期：2020-11-18
DOI：10.3404/j.issn.1672-7649.2022.02.023
分类号：P751
基金项目：三亚崖州湾科技城管理局资助项目(SKJC-KJ-2019KY08)
作者简介：张晶晶(1987-)，女，博士研究生，研究方向为内孤立波载荷
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