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

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

{"title":"Advancing floating offshore wind turbine construction from the perspective of wet towing using a tugboat with autonomous control","authors":"Yichang Tang , Mingsheng Chen , Zhiming Yuan , Xingyu Jiang , Ning Yu , Tingqiu Li , Yoo Sang Choo","doi":"10.1016/j.marstruc.2025.103973","DOIUrl":"10.1016/j.marstruc.2025.103973","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"107 ","pages":"Article 103973"},"PeriodicalIF":5.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Dynamic response analysis of integrated jacket offshore wind turbine foundation and aquaculture cage structure under regular waves","authors":"Ling-Yu Chen, Tiao-Jian Xu","doi":"10.1016/j.marstruc.2025.104006","DOIUrl":"10.1016/j.marstruc.2025.104006","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"107 ","pages":"Article 104006"},"PeriodicalIF":5.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Power cable underwater configurations and dynamics for a 15MW floating wind turbine at different water depths","authors":"Jiahao Bian , Ling Wan , Kai Chen , Naiquan Ye , Svein Sævik , Torgeir Moan","doi":"10.1016/j.marstruc.2025.103998","DOIUrl":"10.1016/j.marstruc.2025.103998","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"107 ","pages":"Article 103998"},"PeriodicalIF":5.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Theoretical and numerical studies on collapse of corroded subsea pipelines under combined external pressure and axial tension","authors":"Libei Zhou , Shunfeng Gong , Lin Yuan , Junwei Ren , Xipeng Wang","doi":"10.1016/j.marstruc.2025.103964","DOIUrl":"10.1016/j.marstruc.2025.103964","url":null,"abstract":"<div><div>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, 3<em>D</em> 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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103964"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Bearing capacity of helical pile group foundation in clay over silty sand","authors":"Yuxuan Wu , Mi Zhou , Xiangfeng Guo , Xihong Zhang , Jinhui Li","doi":"10.1016/j.marstruc.2025.103941","DOIUrl":"10.1016/j.marstruc.2025.103941","url":null,"abstract":"<div><div>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 (<em>VHM)</em> 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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103941"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Evaluation of limited coupled numerical models with damping correction for TLP floating offshore wind turbine","authors":"Jianing Guo , Mingyue Liu , Yuchao Jia , Shuai Li , Can Yang , Shenglong Zhu","doi":"10.1016/j.marstruc.2025.103954","DOIUrl":"10.1016/j.marstruc.2025.103954","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103954"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145528181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Structural damage identification by finite element model updating using transmissibility functions data: Numerical and experimental study","authors":"Shahriar Baybordi, Akbar Esfandiari, Ahmad Izadi","doi":"10.1016/j.marstruc.2025.103968","DOIUrl":"10.1016/j.marstruc.2025.103968","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103968"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145623034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Innovative integrated damping mooring technology for floating wind turbines under extreme sea conditions","authors":"Haonan Tian , Mohsen N. Soltani , Oriol Colomés","doi":"10.1016/j.marstruc.2025.103948","DOIUrl":"10.1016/j.marstruc.2025.103948","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103948"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Penetration characteristics of composite bucket foundations under eccentric loads during integrated offshore wind turbine installation","authors":"Hongyan Ding , Tingyuan Wang , Conghuan Le , Yunlong Xu , Puyang Zhang","doi":"10.1016/j.marstruc.2025.103949","DOIUrl":"10.1016/j.marstruc.2025.103949","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103949"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

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

{"title":"Numerical investigation of the dynamic response characteristics of a submerged floating tunnel tube under wave and current loads","authors":"Wei Cheng , Yun Gao , Conghe Shi , Chen Shi","doi":"10.1016/j.marstruc.2025.103957","DOIUrl":"10.1016/j.marstruc.2025.103957","url":null,"abstract":"<div><div>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 <em>k</em>-<em>ω</em> 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<sup>-1</sup>, the wave-current coupling effect became obviously pronounced and non-negligible.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103957"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145416841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0