Marine Structures最新文献_第7页

A novel dual jack-up installation platforms synchronized construction method for sinking tube of submerged floating tunnel 沉浮隧道沉管双自升式安装平台同步施工新方法

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-11-20 DOI: 10.1016/j.marstruc.2025.103974

Fang Wang , Jing Li , Jianyun Chen , Qiang Xu

{"title":"A novel dual jack-up installation platforms synchronized construction method for sinking tube of submerged floating tunnel","authors":"Fang Wang , Jing Li , Jianyun Chen , Qiang Xu","doi":"10.1016/j.marstruc.2025.103974","DOIUrl":"10.1016/j.marstruc.2025.103974","url":null,"abstract":"<div><div>Research on submerged floating tunnels has primarily focused on conceptual analysis, with comparatively limited advances in installation techniques and construction control. This study proposes an innovative construction concept for sinking tube of submerged floating tunnel. The core technology lies in a synchronized operation system utilizing dual jack-up installation platforms. First, a novel jack-up installation platform was designed. Key components such as the platform hull, truss-type pile legs, and rack-and-pinion jacking systems were detailed. Second, critical steps and construction procedures for applying this method to sinking tube were systematically outlined. Finally, a multi-body dynamic response simulation was conducted to analyze the sinking tube operation. The effects of wave and current loads on the motion response of the sinking tube and platforms, as well as mooring line tensions, were discussed. The results indicate that the proposed method offers significant operational advantages, exhibiting robust performance even under extreme wave conditions. This approach effectively extends the available construction time window for sinking operations of submerged floating tunnels.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103974"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579179","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

Deep learning-based damage localization method for strain analysis of jacket offshore platform structures 基于深度学习的海洋平台导管架结构应变分析损伤定位方法

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-11-20 DOI: 10.1016/j.marstruc.2025.103972

Shufeng Feng, Lei Song, Zhuoyi Yang, Tengfei Sun, Kai Wu, Peng Liu, Qilong Wu, Jiarui Huang

{"title":"Deep learning-based damage localization method for strain analysis of jacket offshore platform structures","authors":"Shufeng Feng, Lei Song, Zhuoyi Yang, Tengfei Sun, Kai Wu, Peng Liu, Qilong Wu, Jiarui Huang","doi":"10.1016/j.marstruc.2025.103972","DOIUrl":"10.1016/j.marstruc.2025.103972","url":null,"abstract":"<div><div>Jacket offshore platforms operate in complex marine environments for extended periods, making them susceptible to damage such as cracks and corrosion, which pose serious threats to structural safety. Therefore, research on their structural health monitoring is of great significance. To investigate the effectiveness of deep learning models in damage identification for jacket offshore platforms, this study designed multiple small-scale experimental conditions involving cracks and corrosion on three-pile and four-pile jacket structures. Strain signal data were collected under various damage scenarios. The damage identification performance of convolutional neural networks (CNN), long short-term memory networks (LSTM), and their hybrid model (CNN-LSTM) was evaluated, and the noise resistance of each algorithm was further assessed. The experimental results demonstrate that the CNN model exhibits high accuracy and stability in identifying both crack and corrosion damages, with additional advantages of computational efficiency, structural simplicity, and robustness against noise interference. These findings provide theoretical foundations and methodological support for the structural health monitoring of jacket offshore platforms and show great potential for engineering applications.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103972"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579180","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

Corrigendum to “Analysis on the mechanical properties of TPJ foundation during scour development under different wave and current parameters” [Marine Structures, Volume 104, 15 October 2025, 103899] “不同波浪和水流参数下TPJ地基冲刷发展过程中的力学特性分析”的勘误[海洋结构，104卷，2025年10月15日，103899]

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-09-21 DOI: 10.1016/j.marstruc.2025.103943

Ning Wang , Ruihu Zhu , Qiming Wang , Siyuan He , Ling Qiu

引用次数: 0

Damage-based strength reduction factor for seismic design of structures subjected to offshore ground motions 基于损伤的强度折减系数在近海地震动结构抗震设计中的应用

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-09-23 DOI: 10.1016/j.marstruc.2025.103945

Bali Liu , Hao Tian , Jinjun Hu , Changhai Zhai

{"title":"Damage-based strength reduction factor for seismic design of structures subjected to offshore ground motions","authors":"Bali Liu , Hao Tian , Jinjun Hu , Changhai Zhai","doi":"10.1016/j.marstruc.2025.103945","DOIUrl":"10.1016/j.marstruc.2025.103945","url":null,"abstract":"<div><div>This paper focuses on damage-based strength reduction factor (SRF) of single-degree-of freedom (SDOF) systems subjected to an ensemble of 892 offshore ground-motion records from the Kyoshin network in the Japan Sagami Bay Region. Damage-based SRF spectra are statistically developed considering both the offshore ground-motion characteristics (such as seafloor stations, magnitude, epicentral distance, significant duration and mean period) and structural parameters (including initial period, damage level, postyield stiffness ratio, ultimate ductility factor and hysteretic behavior). The differences in damage-based SRF spectra under offshore and onshore ground-motion records are also investigated. The results showed that the effects caused by offshore ground motions on the estimation of damage-based SRF are negligible, while the influence caused by the ultimate ductility factor can reach up to approximately 50 %. Analytical estimates of damage-based SRFs for mean level, 10th percentile values and 90th percentile values in terms of period, damage index, and ultimate ductility factor are proposed for the aseismic design of offshore structures.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103945"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118858","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

An integrated hydrodynamic module of FOWTs using accelerated BEM solver and modified Morison coefficients 利用加速边界元求解器和修正的莫里森系数，建立了一种集成的流体力学模型

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-09-05 DOI: 10.1016/j.marstruc.2025.103928

Lilin Wang , Long Teng , Yuliang Liu , Lizhong Wang , Zhen Guo

{"title":"An integrated hydrodynamic module of FOWTs using accelerated BEM solver and modified Morison coefficients","authors":"Lilin Wang , Long Teng , Yuliang Liu , Lizhong Wang , Zhen Guo","doi":"10.1016/j.marstruc.2025.103928","DOIUrl":"10.1016/j.marstruc.2025.103928","url":null,"abstract":"<div><div>Hydrodynamics is critical to the stability and safety of floating offshore wind turbines (FOWTs). To improve computational efficiency in the preliminary design stage, frequency-to-time domain potential flow method combined with the Morison equation are commonly used. However, this method lack systematic validation and require multiple tools, leading to complex workflows and inefficient data transfer. To address these challenges, an integrated hydrodynamic module named Zwave is presented in this study, aiming to streamline wave generation, meshing, potential flow analysis, and viscous force calculation. It incorporates advanced features such as parameterized meshing, an accelerated boundary element solver, and amplitude- and frequency-dependent Morison coefficients. Component-level verification shows that Zwave accurately reproduces target wave spectra, and its hydrodynamic results align well with WAMIT in the frequency domain and Orcaflex in the time domain. Furthermore, with corrected Morison coefficients, Zwave successfully captures the resonance responses observed in wave basin tests. Building upon this, system-level validation is performed using field measurements from the Fukushima 2 MW FOWT, demonstrating good agreement in tower base and top bending moments under various sea states.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103928"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997704","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

Residual ultimate strength of a damaged deck grillage structure 受损甲板梁架结构的剩余极限强度

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-10-15 DOI: 10.1016/j.marstruc.2025.103950

Malcolm Smith , Ken Nahshon , Teresa Magoga , Joel Hogan , Rachel Markert , Joel Higgins

{"title":"Residual ultimate strength of a damaged deck grillage structure","authors":"Malcolm Smith , Ken Nahshon , Teresa Magoga , Joel Hogan , Rachel Markert , Joel Higgins","doi":"10.1016/j.marstruc.2025.103950","DOIUrl":"10.1016/j.marstruc.2025.103950","url":null,"abstract":"<div><div>A deck grillage structure was extracted from a decommissioned warship (ex-HMCS IROQUOIS) and damaged as the result of a dynamic pressure loading test, resulting in overall permanent multi-bay deformation of the plating and attached members. The damaged grillage was then re-configured for residual ultimate strength testing under longitudinal loading. The test article spanned three complete frame bays plus half-bays at each end and four continuous longitudinals of the original structure. In addition to thickness and material property measurements, Light Detection and Ranging (LiDAR) measurement of the damaged panel was carried out after re-configuration. The residual strength testing consisted of compressive loading to collapse and post-collapse, followed by two tension-compression cycles. Numerical assessments of the residual strength were performed using nonlinear finite element analysis (FEA) and material models based on measured material properties from material recovered from the ship. Excellent agreement is achieved between the measured and predicted load-shortening behaviour through progressive adjustment of the material modelling parameters. The deformation damage is estimated to result in a 20.7% loss of ultimate strength. The modelling approach developed here is then extended to the analysis of four previously-studied grillage structures recovered from the same vessel.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103950"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324375","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

Newly fitted Van der Pol parameters for vortex-induced vibration and their application to a deep-sea mining riser 新拟合的涡激振动Van der Pol参数及其在深海采矿立管中的应用

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-10-10 DOI: 10.1016/j.marstruc.2025.103953

Zhiquan Zhou , Jiasong Wang

{"title":"Newly fitted Van der Pol parameters for vortex-induced vibration and their application to a deep-sea mining riser","authors":"Zhiquan Zhou , Jiasong Wang","doi":"10.1016/j.marstruc.2025.103953","DOIUrl":"10.1016/j.marstruc.2025.103953","url":null,"abstract":"<div><div>The stability of wake oscillator model prediction accuracy across varying conditions is a critical and widely studied topic. This study developed a wake oscillator model incorporating newly fitted Van der Pol parameters, derived through mathematical derivation coupled with experimental fitting. The model comprises structural dynamic equations and Van der Pol oscillators in the in-line and cross-flow directions, solved numerically via the central difference method. Comparison with several classical experimental data and other numerical studies illustrates the enhanced comprehensive accuracy of the model. Particularly, this modification effectively addresses the common underestimation of in-line amplitudes and maintains consistent performance across diverse operating conditions. Investigation of the vortex-induced vibrations in the deep-sea mining riser reveals that the application of the new parameters magnifies the vibration amplitude, especially the peaks. The phenomenon arises from localized energy accumulation and reduced phase velocity. The model effectively enhances the higher-order frequency components and modifies the sidelobe width of the dominant vibration frequency, preventing the occurrence of unforeseen resonance. Those variations are amplified as the flow velocity increases. The static displacement of the riser, governed by the mean drag coefficient, remains unaffected. This improvement establishes a foundation for predicting vortex-induced vibrations responses and ensuring operational safety of deep-sea mining risers.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103953"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266948","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

Overlaid energy-on-force contour maps method for safe, efficient, and economic design of dual-elastic ship berthing dolphins 双弹性靠泊海豚安全、高效、经济设计的能量-力叠加等值线图方法

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-10-31 DOI: 10.1016/j.marstruc.2025.103958

Waldemar Magda

{"title":"Overlaid energy-on-force contour maps method for safe, efficient, and economic design of dual-elastic ship berthing dolphins","authors":"Waldemar Magda","doi":"10.1016/j.marstruc.2025.103958","DOIUrl":"10.1016/j.marstruc.2025.103958","url":null,"abstract":"<div><div>The paper explores safe, efficient, and economic design of ship berthing dolphins. Focus is on the real, dual-elastic performance of a modern marine modular rubber fender and a tubular steel-pile substructure of a berthing dolphin. Assuming the simultaneous absorption of a vessel’s berthing kinetic energy by two elastic components of the pile-fender berthing system, an explicit procedure is given for the selection of a steel-pile cross-section geometry in relation to a given size of the rubber fender unit. The procedure uses an easily applicable method of geometrically overlaid energy-on-force contour maps. The contour maps contain isolines of the minimum required potential energy of the berthing dolphin steel-pile substructure and the maximum reaction force of the marine rubber fender. Four example cases of the overlaid contour maps are presented and discussed practically. The application of the overlaid contour maps method assumes a full (100%) efficiency of the fender unit in energy absorption and fulfils a condition of geotechnical stability of the embedded steel-pile dolphin substructure. A practical application of the overlaid contour maps is illustrated by means of a worked example, assuming an oil tanker of 70,000 deadweight tonnes, realistic geometries of large-diameter berthing dolphin steel-piles, and a family of widely used Sumitomo modular rubber fenders. It is shown that the proposed method can serve as a convenient and simple design technique for the optimum selection of the required geometry of steel pile cross-section in relation to the size of the fender unit.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103958"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145416842","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

Ice loads on a bottomless cylinder under dynamic wave action: An experimental study 动波作用下无底圆筒冰载荷的实验研究

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-09-06 DOI: 10.1016/j.marstruc.2025.103902

Hongtao Li , Ersegun D. Gedikli , Zhengshun Cheng , Junji Sawamura , Raed Lubbad , Wenjun Lu

{"title":"Ice loads on a bottomless cylinder under dynamic wave action: An experimental study","authors":"Hongtao Li , Ersegun D. Gedikli , Zhengshun Cheng , Junji Sawamura , Raed Lubbad , Wenjun Lu","doi":"10.1016/j.marstruc.2025.103902","DOIUrl":"10.1016/j.marstruc.2025.103902","url":null,"abstract":"<div><div>In this study, we report the results of a comprehensive experimental analysis of ice loads on a bottomless cylinder under dynamic wave action and explore advanced methods to identify, isolate, and quantify these loads. To achieve this, we investigate and discuss various system identification techniques, such as the Prony method, dynamic mode decomposition (DMD), and covariance-driven stochastic subspace identification (SSI-cov), highlighting their applicability to experimental data. We also employ advanced signal processing approaches, including Robust Principal Component Analysis (RPCA) and robust local regression, to separate ice loads from quasi-periodic wave loads. Our findings reveal that ice and wave loads exhibit a positive correlation with wave height. Further, when the wave height remains unchanged, the normalized collision duration increases with wave frequency and shows insignificant dependence on peak ice loads. Additionally, ice loads are found to be <span><math><mrow><mn>3</mn><mo>∼</mo><mn>4</mn></mrow></math></span> times larger than wave loads. These results contribute to advancing our understanding of wave–ice–structure interactions and provide practical insights for designing resilient offshore structures in ice-infested waters.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103902"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005016","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

Data-driven surface reconstruction for assessing welding-induced distortions in ship-deck panels 船舶甲板板焊接变形评估的数据驱动表面重建

IF 5.1 2区工程技术

Marine Structures Pub Date : 2026-01-30 Epub Date: 2025-11-18 DOI: 10.1016/j.marstruc.2025.103970

Matti Christmann , Federica Mancini , Heikki Remes

{"title":"Data-driven surface reconstruction for assessing welding-induced distortions in ship-deck panels","authors":"Matti Christmann , Federica Mancini , Heikki Remes","doi":"10.1016/j.marstruc.2025.103970","DOIUrl":"10.1016/j.marstruc.2025.103970","url":null,"abstract":"<div><div>Increasingly stringent regulations on greenhouse gas emissions have sparked interest in lightweight, thin-walled deck panels for cruise ship superstructures. Throughout the ship assembly, irregular welding-induced distortions accumulate on thin plates, affecting their load-carrying capacity significantly. Due to complex geometries, the assessment of distorted thin-walled panel units relies on accurate finite element modeling based on high-density optical scanning measurements, provided as unorganized point clouds (PC). This poses challenges in terms of processing of the data for surface reconstruction and data storage. This paper presents a computationally efficient, iterative B-spline surface fitting procedure for surface reconstruction from an unorganized 3D PC for the finite element analysis of distorted thin-deck panels. The method achieves a minimum geometric reconstruction accuracy of 0.08 mm and structural strain predictions mostly within 89% accuracy, validated against uni-axial monotonic tensile experiments on full-scale panels. Additionally, the proposed procedure reduces the file size to less than 1% of the original, thus representing a valuable solution for the handling of large sets of data from the scanning of multiple decks in ship superstructures. These results highlight the method’s potential for improving the assessment and quality control of thin-walled ship superstructures.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"106 ","pages":"Article 103970"},"PeriodicalIF":5.1,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579062","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