Marine Structures最新文献_第5页

Advancing floating offshore wind turbine construction from the perspective of wet towing using a tugboat with autonomous control 采用自主控制拖船，从湿拖航角度推进海上浮式风力发电机组建设

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-03-15 Epub Date: 2025-12-06 DOI: 10.1016/j.marstruc.2025.103973

Yichang Tang , Mingsheng Chen , Zhiming Yuan , Xingyu Jiang , Ning Yu , Tingqiu Li , Yoo Sang Choo

The abundant offshore wind energy resources present extensive development opportunities for wind turbines, with the safety and reliability of transportation operations serving as essential prerequisites for ensuring their successful deployment and long-term operation. This research develops a constant parameter time-domain model (CPTDM) for the towing operation simulation of an IEA 15MW floating offshore wind turbine (FOWT) foundation in waves based on a state space model (SSM) for the first time and integrates the lumped mass method. To validate the accuracy and efficiency of CPTDM, three innovative towing simulation methods are proposed in the hydrodynamic analysis software AQWA. Through the viscous damping correction by the computational fluid dynamics (CFD) method, hydrodynamic coefficients correction, time-domain analyses of towing system motion responses and cable tensions under different wave environments, and encounter frequency verification, the consistency of the dynamics comparison verification results between CPTDM and AQWA in time-domain analyzes is over 90%, and the efficiency of CPTDM improved approximately 50%. Eventually, an optimal simulation method, a high-fidelity numerical model and a recommended towing speed range for a FOWT are presented in this study, aiming to provide valuable guidance for the actual towing construction of a FOWT.

丰富的海上风能资源为风力涡轮机提供了广泛的发展机会，而运输操作的安全性和可靠性是确保其成功部署和长期运行的必要先决条件。本文首次基于状态空间模型（SSM），结合集总质量法，建立了IEA 15MW浮式海上风力机（FOWT）地基在波浪中拖曳运行仿真的常参数时域模型（CPTDM）。为了验证CPTDM的准确性和有效性，在水动力分析软件AQWA中提出了三种创新的拖曳仿真方法。通过计算流体动力学（CFD）方法的粘滞阻尼修正、水动力系数修正、不同波浪环境下拖曳系统运动响应和索张力的时域分析以及遭遇频率验证，CPTDM与AQWA在时域分析中的动力学对比验证结果一致性超过90%，CPTDM的效率提高了约50%。最后，本文提出了一种优化的模拟方法、高保真的数值模型和推荐的拖曳速度范围，旨在为拖曳船的实际拖曳施工提供有价值的指导。

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引用次数: 0

Dynamic response analysis of integrated jacket offshore wind turbine foundation and aquaculture cage structure under regular waves 规则波浪作用下集成导管架海上风力机基础与养殖网箱结构动力响应分析

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-03-15 Epub Date: 2025-12-30 DOI: 10.1016/j.marstruc.2025.104006

Ling-Yu Chen, Tiao-Jian Xu

Wind-fishery integration, a novel development model combining offshore wind power and marine aquaculture, effectively addresses marine resource conflicts. This study presents an innovative marine integrated structure (JOWT+AC), combining jacket-foundation offshore wind turbines (JOWT) with aquaculture cages (AC). The numerical simulation method was first validated using data from physical model experiments, and then used to analyze the dynamic response of the structure. Results indicate that pile loads, leg stresses, and displacements are most affected by wave period, along with wave height and incidence angle. Bottom rope tensions in AC are significantly higher than top ones, with JOWT+AC-M2 (with a total of 12 mooring points) and M3 (with a total of 20 mooring points) showing about 32 % of M1’s (with a total of 8 mooring points) bottom rope tension, while top tensions remain similar. A middle rope section aids in load redistribution, while different mooring configurations influence load paths and structural stiffness. The AC’s damping effect reduces the JOWT+AC dynamic response compared to standalone JOWT. This study offers theoretical guidance for sustainable JOWT+AC design through combined physical and numerical modelling.

风渔一体化是海上风电与海洋水产养殖相结合的新型发展模式，有效解决了海洋资源冲突问题。本研究提出了一种创新的海洋一体化结构（JOWT+AC），将夹克基础海上风力涡轮机（JOWT）与水产养殖网箱（AC）相结合。利用物理模型试验数据验证了数值模拟方法的有效性，并对结构的动力响应进行了分析。结果表明：波浪周期、波高和入射角对桩荷载、桩腿应力和桩身位移的影响最大；AC的底缆张力明显高于顶缆张力，其中JOWT+AC- m2（共12个系泊点）和M3（共20个系泊点）的底缆张力约为M1（共8个系泊点）的32%，而顶缆张力保持相似。当不同的系泊配置影响载荷路径和结构刚度时，中间绳段有助于载荷重新分配。与单独的JOWT相比，交流电的阻尼效果降低了JOWT+AC的动态响应。本研究通过物理和数值模拟相结合的方法，为JOWT+AC的可持续设计提供理论指导。

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引用次数: 0

Power cable underwater configurations and dynamics for a 15MW floating wind turbine at different water depths 15MW浮式风力机不同水深下水下电缆结构及动力学研究

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-03-15 Epub Date: 2025-12-29 DOI: 10.1016/j.marstruc.2025.103998

Jiahao Bian , Ling Wan , Kai Chen , Naiquan Ye , Svein Sævik , Torgeir Moan

As floating wind turbines develop toward deeper waters, and turbine power capacity continues to increase, the design of dynamic power cables for floating wind turbines faces significant challenges. This study systematically analyzes the response characteristics and configuration optimization of dynamic cables under various underwater configurations, i.e., catenary, lazy wave, lazy S, steep wave and steep S configurations, and under four different water depth conditions, i.e., 50 m, 100 m, 150 m and 200 m, based on a 15MW semi-submersible floating wind turbine platform. Firstly, a fully coupled time-domain numerical model considering mooring system and dynamic power cable is established; then, taking lazy-wave configuration under 100 m water depth as a base model, axial forces and displacement of the cable at various locations along the cable length are comprehensively analyzed under different environmental conditions, revealing the cable dynamic characteristics; Furthermore, under shallow water condition, various cable underwater configurations are investigated, showing problems of the catenary configuration, and indicating the necessity of applying bend stiffeners and bend restrictors; In addition, under medium and deep water conditions, dynamic power cable responses including underwater configurations, key mechanical properties (axial force, bending moment, and curvature) at critical locations along the cable length are comprehensively studied for various configurations, highlighting critical locations that may suffer larger dynamic responses. This work provides a theoretical basis and engineering reference for the design and optimization of dynamic cables for large-capacity floating wind turbines under different environmental conditions.

随着浮动式风力发电机组向深水方向发展，以及风力发电能力的不断提高，浮动式风力发电机组动力电缆的设计面临着重大挑战。本研究基于15MW半潜式浮式风力发电平台，系统分析了悬链线、懒波、懒S、陡波、陡S等不同水下构型，以及50 m、100 m、150 m、200 m四种不同水深工况下动力索的响应特性及配置优化。首先，建立了考虑系泊系统与动力缆索的全耦合时域数值模型；然后，以100 m水深下的懒波构型为基础模型，综合分析不同环境条件下不同位置电缆沿电缆长度方向的轴向力和位移，揭示电缆的动力特性；此外，在浅水条件下，研究了各种水下电缆结构，指出了悬链线结构存在的问题，并指出了施加弯曲加强筋和弯曲限制器的必要性；此外，在中深水条件下，对各种配置下的动力电缆动态响应进行了全面研究，包括水下配置、关键位置的关键力学性能（轴向力、弯矩和曲率），突出了可能遭受较大动力响应的关键位置。为不同环境条件下大容量浮式风力机动力索的设计与优化提供了理论依据和工程参考。

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引用次数: 0

Theoretical and numerical studies on collapse of corroded subsea pipelines under combined external pressure and axial tension 外压与轴向张拉联合作用下腐蚀海底管道坍塌的理论与数值研究

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-01-30 Epub Date: 2025-11-06 DOI: 10.1016/j.marstruc.2025.103964

Libei Zhou , Shunfeng Gong , Lin Yuan , Junwei Ren , Xipeng Wang

During long-term service, offshore pipelines may simultaneously experience axial tension coupled with external pressure in the complex marine environment. Under these combined loadings, subsea pipes are prone to local collapse and even propagation, especially in the presence of corrosion. This paper deals with the collapse response of outer corroded pipes subjected to both axial tension and external pressure using theoretical and numerical methods, aiming to determine their ultimate load-bearing capacity. A theoretical model is developed for a preliminary assessment of collapse pressure. Then, a numerical framework, incorporating either longitudinally continuous rectangular defects or localized elliptical defects, is established, and its accuracy is validated against the theoretical results and available experimental data, respectively. With the verified numerical models, the collapse responses are investigated parametrically, including different geometric features, material properties, 3D defect sizes, and defect distribution. Finally, a set of optimized empirical expressions is proposed based upon the comprehensive finite element (FE) results to evaluate the ultimate pressure of pipelines with elliptical corrosion defects subjected to axial tension and external pressure.

在复杂的海洋环境中，海上管道在长期使用过程中可能会同时经历轴向张力和外压力的耦合作用。在这些组合载荷下，海底管道容易发生局部坍塌甚至扩展，特别是在存在腐蚀的情况下。本文采用理论和数值方法研究了外腐蚀管道在轴向拉力和外压力作用下的坍塌响应，以确定其极限承载能力。建立了一个理论模型，对崩塌压力进行了初步评估。然后，建立了纵向连续矩形缺陷和局部椭圆缺陷的数值框架，并分别与理论结果和现有实验数据进行了验证。利用验证的数值模型，研究了不同几何特征、材料特性、三维缺陷尺寸和缺陷分布等参数下的坍塌响应。最后，在综合有限元结果的基础上，提出了一套优化的经验表达式，用于评估椭圆腐蚀缺陷管道在轴向拉伸和外压作用下的极限压力。

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引用次数: 0

Bearing capacity of helical pile group foundation in clay over silty sand 粉质砂上黏土螺旋桩群基础承载力研究

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-01-30 Epub Date: 2025-09-12 DOI: 10.1016/j.marstruc.2025.103941

Yuxuan Wu , Mi Zhou , Xiangfeng Guo , Xihong Zhang , Jinhui Li

Recognized as a growing priority in offshore foundation engineering, helical piles demonstrate exceptional operational stability and lifecycle cost advantages, solidifying their role in modern marine infrastructure development. However, limited knowledge regarding the bearing capacity and failure mechanisms of helical pile group foundations under multi-directional loads in layered soils poses significant challenges for design and optimization of offshore wind platforms and other marine structures. This paper investigates the bearing capacity and failure mechanisms of the helical pile group foundation embedded in layered clay-over-silty-sand soil profiles using numerical simulation. The numerical model is validated against previously exhibiting published data before conducting a parameterized study. Key findings demonstrate that group configurations significantly enhance horizontal capacity compared to single piles, while clay-over-silty-sand stratification induces distinct delamination-type failure mechanisms of the soil around helical pile, contrasting with the global plastic flow observed in uniform clay. The study establishes the normalized bearing capacity envelopes for vertical-horizontal-moment (VHM) loading cases and provides algebraic equations to facilitate conservative design practices. These results offer valuable insights into optimizing the design of the helical pile group foundations for offshore wind platforms and other marine applications.

螺旋桩在海上基础工程中越来越受重视，它表现出卓越的运行稳定性和生命周期成本优势，巩固了其在现代海洋基础设施发展中的作用。然而，由于对层状土壤中螺旋桩群基础在多向荷载作用下的承载力和破坏机制了解有限，这对海上风电平台和其他海洋结构的设计和优化构成了重大挑战。本文采用数值模拟方法研究了层状粘土-粉砂地基中螺旋桩群地基的承载力及破坏机理。在进行参数化研究之前，对先前展示的已发表数据进行数值模型验证。主要研究结果表明，与单桩相比，群桩配置显著提高了水平承载力，而粘土-粉砂-粘土分层导致螺旋桩周围土体明显分层破坏机制，与均匀粘土中观察到的整体塑性流动相反。研究建立了竖向-水平弯矩（VHM）荷载情况下的归一化承载力包络，并提供了代数方程，便于保守设计实践。这些结果为海上风力平台和其他海上应用的螺旋桩群基础的优化设计提供了有价值的见解。

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引用次数: 0

Evaluation of limited coupled numerical models with damping correction for TLP floating offshore wind turbine 考虑阻尼修正的TLP浮式海上风力机有限耦合数值模型评估

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-01-30 Epub Date: 2025-11-14 DOI: 10.1016/j.marstruc.2025.103954

Jianing Guo , Mingyue Liu , Yuchao Jia , Shuai Li , Can Yang , Shenglong Zhu

A two-tier limited coupled model (LCM) framework is developed and validated for horizontal-axis tension leg platform wind turbines (TLPWTs), focusing on efficient and reliable prediction of platform motions and tendon loads. In the first tier, Type I LCMs employ fixed-bottom turbine load inputs to predict extreme and mean responses within 15 % of fully coupled model (FCM) results. Deviations emerge when second-order sum-frequency wave loads are included, primarily due to the absence of real-time rotor-nacelle-assembly (RNA) damping, most significantly under pitch-resonant excitations. To mitigate this limitation, a second-order aerodynamic damping formulation is derived, capturing nonlinear aero-hydro interactions. The refined Type II LCM integrates Rayleigh damping applied to the tower to emulate global RNA damping effects. A two-stage data-driven calibration–validation procedure was implemented: short (360 s) FCM–LCM comparisons were used to calibrate damping parameters, followed by long (3600 s) validations. After calibration, Type II LCM errors were consistently below 6 % across motion and load statistics under both operational and parked conditions, including low-amplitude heave and pitch cases. Time-domain and spectral analyses confirmed agreement in dominant frequencies and energy distributions, with improved consistency at harsher sea states. Computational cost was reduced by approximately fivefold relative to FCMs while preserving fidelity. The two-tier framework thus provides stage-appropriate tools: Type I enables early design iterations when full turbine data are unavailable, while Type II offers cost-effective, high-fidelity analysis for platform response prediction, mooring system optimization, and extreme-condition assessment of TLPWTs.

针对水平轴张力腿平台风力涡轮机（TLPWTs），开发并验证了两层有限耦合模型（LCM）框架，重点是高效可靠地预测平台运动和肌腱载荷。在第一层，I型lcm采用固定底部涡轮负荷输入来预测完全耦合模型（FCM）结果的15%以内的极端和平均响应。当二阶和频波载荷包括在内时，偏差出现，主要是由于缺乏实时转子-机舱组件（RNA）阻尼，最明显的是在俯仰共振激励下。为了减轻这一限制，我们推导了二阶气动阻尼公式，以捕获非线性气动-水力相互作用。改进的II型LCM集成了应用于塔的瑞利阻尼，以模拟全局RNA阻尼效应。采用数据驱动的两阶段校准-验证程序：使用短时间（360秒）FCM-LCM比较来校准阻尼参数，然后进行长时间（3600秒）验证。经过校准，II型LCM在运行和停车条件下的运动和负载统计误差始终低于6%，包括低振幅起伏和俯仰情况。时域和频谱分析证实了主频率和能量分布的一致性，在恶劣的海况下一致性得到了提高。在保持保真度的同时，计算成本相对于fcm降低了大约五倍。因此，两层框架提供了适合阶段的工具：I型可在无法获得完整涡轮机数据时进行早期设计迭代，而II型可为平台响应预测、系泊系统优化和tlpwt的极端条件评估提供经济高效、高保真的分析。

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引用次数: 0

Structural damage identification by finite element model updating using transmissibility functions data: Numerical and experimental study 利用传递函数数据更新有限元模型的结构损伤识别：数值与实验研究

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-01-30 Epub Date: 2025-11-24 DOI: 10.1016/j.marstruc.2025.103968

Shahriar Baybordi, Akbar Esfandiari, Ahmad Izadi

A significant challenge in structural damage detection and finite element model (FEM) updating, particularly for large structures, is the difficulty of structural excitation and response measurement. However, the structures can be excited in some manner such as dropped weight while the force measurement is not possible. This study introduces a novel transmissibility function-based approach for structural FEM updating. Compared to other frequency response-based techniques, this method generates more data and equations. The proposed sensitivity relation, operating at an exact sensitivity level, improves equation accuracy by directly integrating measured data into the sensitivity matrix relations. The efficiency of this proposed approach is validated through numerical simulations of three-dimensional jacket platform and plate models considering measurement and modeling uncertainties. The results demonstrate the method's high accuracy in identifying damage locations and severities. Additionally, the method's abilities are assessed through experimental investigations on a ship hull and a 2D frame. The model updating results by the proposed method proves its capability for structural FEM updating and damage detection.

结构损伤检测和有限元模型更新的一个重要挑战是结构激励和响应测量的困难，特别是对于大型结构。然而，在无法测量力的情况下，结构可以以某种方式（如重物掉落）被激发。提出了一种基于传递函数的结构有限元更新方法。与其他基于频率响应的方法相比，该方法产生更多的数据和方程。所提出的灵敏度关系在精确的灵敏度水平上运行，通过将测量数据直接集成到灵敏度矩阵关系中，提高了方程的精度。通过考虑测量和建模不确定性的三维夹套平台和板模型的数值模拟，验证了该方法的有效性。结果表明，该方法具有较高的损伤位置和损伤程度识别精度。此外，通过船体和二维框架的实验研究，对该方法的能力进行了评估。模型更新结果表明，该方法具有较好的结构有限元更新和损伤检测能力。

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引用次数: 0

Innovative integrated damping mooring technology for floating wind turbines under extreme sea conditions 创新的集成阻尼系泊技术，用于极端海况下的浮动风力涡轮机

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-01-30 Epub Date: 2025-10-08 DOI: 10.1016/j.marstruc.2025.103948

Haonan Tian , Mohsen N. Soltani , Oriol Colomés

Mooring failures significantly threaten the stability of Floating Offshore Wind Turbines (FOWT) under extreme environmental conditions. This study presents an innovative integrated damping mooring system incorporating Seaflex dampers to improve structural stability and operational reliability. Dynamic simulations under 1-year and 50-year return period sea states demonstrate the system’s effectiveness. Under Ultimate Limit State (ULS) conditions, the system reduces surge displacement by 59%, pitch angle by 47%, and mooring line tension by 72%. Under Accidental Limit State (ALS) conditions, it mitigates load spikes, reduces drift displacement by 60%, and improves safety factors by 50%. The comparison shows chain and wire rope configurations have better load reduction performance in the integrated damping scheme. Lightweight and adaptable, the Seaflex dampers enhance broad-spectrum damping without affecting platform buoyancy. This study offers a robust solution for enhancing FOWT safety and durability in harsh marine environments, thereby enabling large-scale offshore wind energy development.

在极端环境条件下，系泊失效严重威胁着浮式海上风力发电机组的稳定性。该研究提出了一种创新的集成阻尼系泊系统，该系统采用了Seaflex阻尼器，以提高结构稳定性和运行可靠性。1年和50年海况下的动态模拟验证了该系统的有效性。在极限状态（ULS）条件下，该系统将浪涌位移降低59%，俯仰角降低47%，锚泊索张力降低72%。在意外极限状态（ALS）条件下，它减轻了负载峰值，减少了60%的漂移位移，并将安全系数提高了50%。对比表明，在综合阻尼方案中，链条和钢丝绳结构具有更好的减载性能。Seaflex减振器重量轻，适应性强，在不影响平台浮力的情况下增强了广谱阻尼。这项研究为提高恶劣海洋环境下的FOWT安全性和耐久性提供了一个强大的解决方案，从而实现了大规模的海上风能开发。

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引用次数: 0

Penetration characteristics of composite bucket foundations under eccentric loads during integrated offshore wind turbine installation 海上风力发电机组一体化安装中偏心荷载作用下复合桶形基础侵彻特性

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-01-30 Epub Date: 2025-10-09 DOI: 10.1016/j.marstruc.2025.103949

Hongyan Ding , Tingyuan Wang , Conghuan Le , Yunlong Xu , Puyang Zhang

To address the challenges of penetration attitude control caused by eccentric loads during the integrated penetration of composite bucket foundations for offshore wind power, this study combines model tests and numerical simulations to systematically investigate the penetration characteristics, seepage field evolution, and critical suction mechanism under eccentric loads. The effects of different eccentric load magnitudes and positions on penetration characteristics were analyzed. Results show that increasing eccentric loads reduces penetration resistance (about 15 % lower than the non-eccentric case), and applying the load directly above a single compartment enhances installation stability through a three-compartment compensation strategy. The study reveals the asymmetric distribution of excess pore water pressure in the soil under eccentric loads, with the negative pore pressure loss at the outer wall of the compensation compartment reduced by approximately 20 % compared to the non-compensation compartment. Critical seepage failure occurs at the interface between the non-compensation compartments and the partition plates. Based on the relationship between seepage paths and pressure differences, a critical suction formula is derived, considering the number of compensation compartments, pressure differences, and penetration depth. The results show that eccentric loads lead to a maximum reduction of 17.56 % in critical suction. This study provides theoretical support and engineering guidance for efficiently installing composite bucket foundations in offshore wind power applications.

针对海上风电复合桶形基础整体侵彻过程中偏心荷载对侵彻姿态控制的挑战，采用模型试验与数值模拟相结合的方法，系统研究了偏心荷载作用下的侵彻特性、渗流场演化及临界吸力机理。分析了不同偏心载荷大小和位置对侵彻特性的影响。结果表明，增加偏心载荷可降低侵彻阻力（比无偏心情况下降低约15%），并且通过三室补偿策略将载荷直接施加在单室上方可提高安装稳定性。研究表明，偏心荷载作用下土体超孔隙水压力分布不对称，补偿室外壁的负孔压损失比非补偿室减小约20%。临界渗流破坏发生在非补偿隔板与隔板之间的界面处。根据渗流路径与压差的关系，推导了考虑补偿室数、压差和侵深的临界吸力公式。结果表明，偏心载荷最大可使临界吸力降低17.56%。该研究为海上风电中高效安装复合式桶形基础提供了理论支持和工程指导。

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引用次数: 0

Numerical investigation of the dynamic response characteristics of a submerged floating tunnel tube under wave and current loads 波浪和水流荷载作用下沉水浮管动力响应特性的数值研究

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2026-01-30 Epub Date: 2025-10-27 DOI: 10.1016/j.marstruc.2025.103957

Wei Cheng , Yun Gao , Conghe Shi , Chen Shi

The dynamic response characteristics of a submerged floating tunnel (SFT) under pure wave loads, pure current loads, and combined wave-current loads were studied using the two-dimensional unsteady Reynolds-averaged Navier-Stokes equations and the shear stress transport k-ω model coupled with the fourth-order Runge-Kutta method. The hydrodynamic forces acting on the SFT, and its motion response characteristics, including vibration amplitude, displacement frequency, and vibration trajectory, were systematically analyzed and discussed. The numerical results showed that, for the design parameters of the SFT selected in this study, when only a wave load was considered, the vibration amplitude of the SFT tube increased as the wave height increased, however, it decreased as the wave period increased. The displacement frequency remained consistent with the wave frequency. When only a current load was considered, the motion response of the SFT tube in the sway direction displayed multi-frequency characteristics, with the dominant frequency in the sway direction being approximately twice that in the heave direction. When a combined wave-current load was considered, for a low current velocity, the displacement frequency response of the SFT body in the heave direction was dominated by the wave load, while for a high current velocity, it was dominated by the wave and current loads simultaneously. Furthermore, for a low current velocity, the coupling effect between the wave and current loads was slight. However, as the current velocity increased to 2.5 m s^-1, the wave-current coupling effect became obviously pronounced and non-negligible.

采用二维非定常雷诺数-平均Navier-Stokes方程和四阶龙格-库塔方法耦合的剪切应力输运k-ω模型，研究了纯波浪荷载、纯电流荷载和波流复合荷载作用下沉浮隧道的动力响应特性。系统地分析和讨论了作用在SFT上的水动力力及其运动响应特性，包括振动幅值、位移频率和振动轨迹。数值结果表明，对于本研究选取的SFT设计参数，当仅考虑波浪荷载时，SFT管的振动幅值随波高的增加而增大，随波周期的增加而减小。位移频率与波浪频率保持一致。仅考虑电流载荷时，SFT管在摇摆方向的运动响应呈现多频特性，摇摆方向的主导频率约为升沉方向的两倍。考虑波流复合载荷时，当电流速度较低时，SFT体在升沉方向的位移频率响应以波浪载荷为主，而当电流速度较大时，SFT体在升沉方向的位移频率响应同时由波浪和电流载荷主导。此外，当电流速度较低时，波浪和电流负载之间的耦合效应较小。然而，当电流速度增加到2.5 m s-1时，波流耦合效应变得明显且不可忽略。

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引用次数: 0