Page 23 - 《振动工程学报》2026年第2期

第 39 卷第 2 期 振 动 工 程 学 报 Vol. 39 No. 2
2026 年 2 月 Journal of Vibration Engineering Feb. 2026

基 于 CFD-FEA 联 合 仿 真 的 波 浪 荷 载 作 用 下

离 散 浮 箱 式 浮 桥 动 力 响 应 研 究

蒋冬启 ， 邵雨航 ， 刘善权 ， 胡 存 2
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（1. 南京理工大学安全科学与工程学院，江苏 南京 210094； 2. 深圳清华大学研究院，广东 深圳 518071）

摘要：本文针对离散浮箱式浮桥这类跨海交通工程结构，采用有限元分析 (FEA) 方法模拟浮桥上部结构，通过计算流体力学
(CFD) 方法分析波浪与浮箱之间的相互作用，研究该结构体系在波浪荷载作用下的动力响应。基于 Star-CCM+和 ABAQUS 软
件联合仿真平台建立了浮桥结构的数值模型，分析了某缩尺浮桥模型在波浪荷载作用下的结构响应，与模型试验结果对比验
证了建模分析方法的可靠性。选取某典型离散浮箱式桁架浮桥，对比了精细化模型和简化模型的差异，研究了波浪周期、锚
泊系统和几何曲率等因素对浮桥结构动力响应的影响规律。结果表明，设置系泊系统和提高系泊刚度可以有效减小浮箱的
横向位移，并进一步限制浮桥上部结构的变形。浮桥结构的横向位移峰值随波浪周期的增大呈先增大后减小的趋势；无系泊
浮桥的自振周期明显长于有系泊浮桥，更容易被长周期波浪荷载激发。增大曲率半径整体上可以降低浮桥结构的动力响应，
长周期波浪作用下曲线浮桥的动力响应峰值相较于直线型浮桥大幅降低；双向浮桥的横向位移响应小于单向浮桥，并在多个
波浪周期处产生内力响应峰值。工程应用中应充分考虑桥址的波浪环境条件，综合选择设置系泊装置和调整几何线型等手
段来有效地减小结构响应，并重点关注端部支座的强度校核和细部设计。

关键词： 离散浮箱式浮桥；曲率半径；流固耦合；动力响应；协同仿真
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中图分类号：U441 .3 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202401030

CFD-FEA co-simulation based study on dynamic response of discrete-pontoon

floating bridges under wave actions

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JIANG Dongqi ，SHAO Yuhang ，LIU Shanquan ，HU Cun 2
（1.School of Safety Science and Engineering，Nanjing University of Science and Technology，Nanjing 210094，China；
2.Research Institute of Tsinghua University in Shenzhen，Shenzhen 518071，China）
Abstract：This study investigates the dynamic response of a novel offshore transportation engineering structure，the discrete pontoon floating
bridge，under wave actions. The interaction between the wave and pontoon is simulated using computational fluid dynamics (CFD) method，
while the upper structure of the floating bridge is modeled using finite element analysis (FEA) method. A numerical model is established using
the collaborative simulation platform of ABAQUS and Star-CCM+. The structural response of a scaled discrete pontoon floating bridge model
under wave actions is analyzed and compared with experimental results， which validate the reliability of the modelling and analysis
methodology. A typical discrete pontoon truss floating bridge is selected to compare the differences between the refined model and simplified
model，and the differences are further compared. The effects of wave periods，mooring systems，and geometric curvature on the dynamic
response of the floating bridge are studied. The results show that the pontoons’ lateral motions can be effectively reduced by adding the mooring
system and increasing the mooring stiffness， which further limits the displacement of the floating bridge superstructure. The peak lateral
displacement of the floating bridge structure initially increases and then decreases with the wave period. The natural period of an unmoored
floating bridge is much longer than that of a moored one，making it more susceptible to be excited by long-period wave actions. Increasing the
curvature radius of the floating bridge helps to reduce the overall dynamic response. The peak values of dynamic responses in curved floating
bridges under long-periodic wave actions are significantly less than those in straight bridges. The lateral displacement of the double curved
floating bridge is smaller than that of the single curved bridge，while the peak values of internal forces occur at several critical wave periods. In
the engineering application of floating bridges， it is important to consider the local wave environment conditions and select appropriate
curvature radius values and mooring systems to reduce the structural response. Moreover，the strength check and detailed design for supports at
ends should be considered with caution.
Keywords：discrete-pontoon floating bridges；radius of curvature；fluid-structure interaction；dynamic response；co-simulation

收稿日期：2024-01-11；修订日期：2025-06-17
基金项目：国 家 自 然 科 学 基 金 资 助 项 目 （ 52478180） ； 海 洋 工 程 全 国 重 点 实 验 室 （ 上 海 交 通 大 学 ） 开 放 基 金 资 助 项 目
（GKZD010089）；中央高校基本科研业务费专项资金资助项目（30922010907）