大型深水导管架建造工况条件下的杆件涡激振动评估

基于国内某深水导管架项目，从工程实用角度出发，介绍在导管架建造过程中杆件涡激振动的理论评估方法和约束条件的选择标准，并对结构片总装时的涡激振动进行计算。结果表明：较弱的约束条件使杆件更易发生涡激振动；不同规格杆件的涡激振动对约束条件的敏感性不同；高柔度杆件具有相对更高的涡激振动风险，短粗型杆件的涡激振动对约束状态的变化更敏感。

Evaluation of Bar Vortex-Induced Vibration of Large Deepwater Jacket Under Construction Conditions

Based on a domestic deepwater jacket project, from the practical engineering angle, the theoretical evaluation method and selection criteria of constraint conditions of bar vortex-induced vibration during jacket construction are introduced, and the vortex-induced vibration of structural pieces during the final assembly is calculated. The results show that: the weaker constraint conditions make the bars more easy to generate the vortex-induced vibration; the sensitivity of vortex-induced vibration of bars with different specifications to the constraint conditions is different; the bars with high flexibility are of relatively higher risk of vortex-induced vibration, and the vortex-induced vibration of short and thick bars is more sensitive to the change of constraint state.