Marine Structures最新文献_第5页

Stress analysis and frictional behavior of helical power core components in marine dynamic cables under axial tension and bending loads 轴向拉伸和弯曲载荷作用下船用动力电缆螺旋动力芯部件的应力分析和摩擦行为

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-22 DOI: 10.1016/j.marstruc.2025.103854

Gongsai Huang , Chongchong Guo , Hongjiang Li , Wenhua Wu

{"title":"Stress analysis and frictional behavior of helical power core components in marine dynamic cables under axial tension and bending loads","authors":"Gongsai Huang , Chongchong Guo , Hongjiang Li , Wenhua Wu","doi":"10.1016/j.marstruc.2025.103854","DOIUrl":"10.1016/j.marstruc.2025.103854","url":null,"abstract":"<div><div>As the development of offshore wind energy continues increasing, the utilization of dynamic cables becomes crucial. Helical power core components are essential functional elements in marine dynamic cables, and understanding the mechanical behavior of these spiral structures under complex external loads has garnered significant attention. This study introduces a comprehensive stress analysis model for helical power core components in dynamic cables subjected to axial tension and bending loads. Unlike previous simplified models, the proposed approach fully accounts for the double-helix structure in the conductor configuration. By introducing Darboux vectors, which encompass two curvatures and one twist, the mechanical response models for both single-helix and double-helix conductor wires under combined tension and bending loads are developed. The study further delves into the interactions between local frictional contact and the geometric characteristics of the helical structure, leading to the formulation of analytical models for contact stresses in helical components. Additionally, a multi-layer pressure transmission model for the helical power core is proposed based on the force action-reaction principle. To account for frictional forces, Coulomb’s friction law is integrated into the model, and an iterative solution procedure is provided to obtain friction-slip results. The theoretical model is verified using finite element (FE) simulations and existing experimental data, specifically applied to a high-voltage direct current (HVDC) cable. The results demonstrate the accuracy of the model in predicting cross-sectional stresses under nonlinear combined tension and bending moments. This work offers valuable technical support for the analysis and design of marine dynamic cables under complex loading conditions, contributing to the optimization of their mechanical performance.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103854"},"PeriodicalIF":4.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107774","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

Low frequency vibration reduction of CFRP raft frame based on local resonance 基于局部共振的CFRP筏架低频减振研究

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-22 DOI: 10.1016/j.marstruc.2025.103851

Jinguang Zhang , Kai Fu , Jun Rao , Xu Xia , Yukuan Dou , Xianglong Wen

{"title":"Low frequency vibration reduction of CFRP raft frame based on local resonance","authors":"Jinguang Zhang , Kai Fu , Jun Rao , Xu Xia , Yukuan Dou , Xianglong Wen","doi":"10.1016/j.marstruc.2025.103851","DOIUrl":"10.1016/j.marstruc.2025.103851","url":null,"abstract":"<div><div>As the demand for enhanced ship stealth performance continued to grow, the need for effective vibration isolation in the floating raft frame system, particularly within the low-frequency range, was increased. The raft frame played a critical role in determining the overall vibration-reduction performance. To improve the low-frequency vibration reduction, this paper incorporated the low-frequency elastic wave modulation characteristics of local resonance and the high damping properties of Carbon Fiber Reinforced Plastics (CFRP) into the raft frame, investigating their vibration characteristics via a test platform. Different oscillator distributions and masses were applied to the CFRP raft frame to study their effects on vibration behavior, with measurements taken using the B&K test system. The results revealed that the addition of oscillators lowered the initial vibration attenuation frequency and increased the maximum vibration attenuation from 48.9 dB to 103.2 dB. Optimal vibration reduction was achieved by placing the oscillators at the support position for low-frequency attenuation and at the center position for high-frequency attenuation. This spatial distribution strategy demonstrated agreement with simulation predictions. In conclusion, integrating the low-frequency modulation characteristics of local resonance into the CFRP raft frame significantly enhanced its vibration-reduction performance.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103851"},"PeriodicalIF":4.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114937","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

Thermal instability behaviors of the subsea confined FGP-GPLs polyhedral pipeline under a temperature-rising field 升温场下水下受限FGP-GPLs多面体管道热失稳行为

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-21 DOI: 10.1016/j.marstruc.2025.103852

Qian Zhang , Meiling Shen , Zhaochao Li

{"title":"Thermal instability behaviors of the subsea confined FGP-GPLs polyhedral pipeline under a temperature-rising field","authors":"Qian Zhang , Meiling Shen , Zhaochao Li","doi":"10.1016/j.marstruc.2025.103852","DOIUrl":"10.1016/j.marstruc.2025.103852","url":null,"abstract":"<div><div>Subsea pipelines are usually heated to reduce the viscosity and improve transportation efficiency during the transportation of crude oil. However, subsea pipelines may buckle under the rise of the thermal field. Therefore, this study employs a novel functionally graded porous (FGP) metal reinforced by graphene platelets (GPLs) and polyhedral profile to enhance the thermal stability of the encased subsea pipelines. The distribution of the pores and GPLs in the cross-section of the pipelines is determined by the Halpin-Tsai micromechanics theory and Gaussian random field. The geometric parameters of the polyhedral profile are defined. Geometric nonlinearity is considered. A radial displacement function is introduced to describe the deformation of pipelines. Based on the theory of thin-walled shells and the energy method, the temperature-displacement equilibrium paths may be traced, and the minimum and maximum temperature variation also may be obtained. Subsequently, comparative studies are conducted with the results of the other available studies. Good accordance indicates the present study is efficient and accurate. An improvement factor is quantified to discuss the effect of a polyhedral profile on thermal stability compared to a circular one. Finally, parametric evaluations are highlighted by analyzing the effects of pores, the weight fraction of the GPLs, polyhedral profile on the thermal buckling.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103852"},"PeriodicalIF":4.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107866","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 the installation system during hoisting and mating phases using a floating vessel. Part Ⅱ: Application 浮船安装系统吊装与配合阶段的动态响应分析。Ⅱ部分：应用

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-20 DOI: 10.1016/j.marstruc.2025.103856

Li Yin , Dongsheng Qiao , Pengfei Liu , Guoguang Sun , Guoqiang Tang , Lin Lu , Jinping Ou

{"title":"Dynamic response analysis of the installation system during hoisting and mating phases using a floating vessel. Part Ⅱ: Application","authors":"Li Yin , Dongsheng Qiao , Pengfei Liu , Guoguang Sun , Guoqiang Tang , Lin Lu , Jinping Ou","doi":"10.1016/j.marstruc.2025.103856","DOIUrl":"10.1016/j.marstruc.2025.103856","url":null,"abstract":"<div><div>The installation of large-scale wind turbine blades is a process characterized by cumbersome operating procedures, complex dynamic responses, and limited weather window. Accurate analysis and evaluation of the responses of the installation system throughout the hoisting and mating phases are crucial for providing effective guidance in offshore operations. However, most current research focuses on individual phases rather than the entire process. Therefore, based on the analysis model of the blade installation system established in Part I of this research, a systematic investigation of the dynamic responses of the entire hoisting and mating phases is conducted. The dynamic responses of the vessel, crane, and double pendulum system are analyzed under typical cases, revealing the characteristics of response amplification and frequency coupling. Moreover, oscillations of the blade and tensions in the suspension cable are evaluated under variable environmental conditions. During the hoisting phase, changes in the length of the suspension cable may cause the modal period of the double pendulum system to approach the periods of the environmental loads and natural periods of the vessel, leading to a significant amplification of the system responses. The oscillations of the blade during installation can be reduced by shortening the length of the suspension cable.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103856"},"PeriodicalIF":4.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107865","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

Fretting wear and fatigue life for dynamic power cable conductors under different slip conditions 动态电力电缆导体在不同滑移条件下的微动磨损和疲劳寿命

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-20 DOI: 10.1016/j.marstruc.2025.103847

Yifan Wang , Zhenkui Wang , Haolin Li , Xiaowei Huang , Zhen Guo

{"title":"Fretting wear and fatigue life for dynamic power cable conductors under different slip conditions","authors":"Yifan Wang , Zhenkui Wang , Haolin Li , Xiaowei Huang , Zhen Guo","doi":"10.1016/j.marstruc.2025.103847","DOIUrl":"10.1016/j.marstruc.2025.103847","url":null,"abstract":"<div><div>Under wave, current and motion of floating wind turbines, the cyclic bending of dynamic power cables induces the relative slip between the wires of the cable conductor, leading to wear of wires and subsequently affecting the fatigue life of the conductor. In this study, a numerical model is developed to incorporate the modified version of the Archard equation to simulate the fretting wear of conductor wires, and it is compared with the experimental data to validate the results. The evolution of fretting wear scars, contact pressure distribution and fretting fatigue damage under cyclic loading with gross slip and partial slip conditions is investigated. The effects of coefficient of friction, normal load and slip amplitude on fatigue life are quantitatively analysed by the critical plane approach. The results indicate that the fretting wear under gross slip condition can extend the fatigue life of the conductor, while the fretting wear under partial slip condition reduces the fatigue life. Both the coefficient of friction and normal load significantly affect the fretting wear behaviour and fatigue life of the conductor. A critical state exists between the partial slip and gross slip conditions, and the effect of wear on fatigue life becomes more significant as the fretting wear approaches this critical state.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103847"},"PeriodicalIF":4.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088926","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

Development of a coupled time-domain model for complexly moored multi-body system with application in catamaran float-over deck installation 复杂系泊多体系统耦合时域模型的建立及其在双体船浮式甲板安装中的应用

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-19 DOI: 10.1016/j.marstruc.2025.103849

Meiyan Zou , ChuanZheng Chen , Mingsheng Chen , Panpan Xiao , Mingjun Ouyang , Yichang Tang , Wenhua Zhao , Xinliang Tian

{"title":"Development of a coupled time-domain model for complexly moored multi-body system with application in catamaran float-over deck installation","authors":"Meiyan Zou , ChuanZheng Chen , Mingsheng Chen , Panpan Xiao , Mingjun Ouyang , Yichang Tang , Wenhua Zhao , Xinliang Tian","doi":"10.1016/j.marstruc.2025.103849","DOIUrl":"10.1016/j.marstruc.2025.103849","url":null,"abstract":"<div><div>Multiple floating structures offer a versatile solution for offshore engineering. However, these systems are inherently complex due to hydrodynamic interactions and intricate connections between structures and moorings. This study aims to develop a coupled time-domain model for multiple floating structures, and to demonstrate its application to catamaran float-over operations. The developed model is validated against AQWA using a catamaran float-over installation of a Spar platform as a benchmark case. Results indicate that adopting a state-space model enables fast and accurate predictions of multiple floating structures. Additionally, it is observed that iterative algorithms significantly influence the prediction of impact dynamics when impacts and separations occur alternately. The developed model exhibits good agreement with AQWA in forecasting the kinematics and impact forces of the catamaran float-over system, confirming its reliability for simulating multiple offshore structures.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103849"},"PeriodicalIF":4.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084018","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

Modal matrix reduction for fully coupled integrated load analysis of floating structures 浮式结构全耦合综合荷载分析的模态矩阵简化

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-17 DOI: 10.1016/j.marstruc.2025.103845

Borja Servan-Camas , Irene Berdugo-Parada , Julio Garcia-Espinosa , Andres Pastor-Sanchez

{"title":"Modal matrix reduction for fully coupled integrated load analysis of floating structures","authors":"Borja Servan-Camas , Irene Berdugo-Parada , Julio Garcia-Espinosa , Andres Pastor-Sanchez","doi":"10.1016/j.marstruc.2025.103845","DOIUrl":"10.1016/j.marstruc.2025.103845","url":null,"abstract":"<div><div>Structural elasticity of floating wind turbines in integrated load analysis (ILA) is typically addressed by modelling the substructure with simplified beam models. The main reason can be found in the computational cost of the structural solver when solving the fully coupled hydroelastic problems. In this work, a reduce order method based on modal matrix reduction is applied to reduce the computational cost of the structural solver. The main idea is to largely reduce the number of degrees of freedom of the structural system by retaining only those modes with significant energy.</div><div>The seakeeping hydrodynamics is solved using the finite element framework SeaFEM. The structural particulars are introduced into this framework to fully integrate the fluid-structure interaction. The hydroelastic model is also coupled with the wind turbine solver OpenFAST, resulting in a complete aero-hydro-servo-elastic tool for the ILA analysis of floating turbines.</div><div>A methodology is proposed to identify critical conditions and hotspots based on the structural energy. An application case of the present strategy is presented for a detailed structural design of the well-known OC4-DeepCwind. The consistency of the modal approximation and methodology is verified against the FE structural solution. The capabilities of the proposed ILA framework are demonstrated in a fully coupled and detailed structural analysis, instead of at component level, with a significant reduction of its computational time.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103845"},"PeriodicalIF":4.0,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070117","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 modeling of simplified offshore wind turbines with monopile support under multiple environmental load coupling 多环境荷载耦合下简化单桩支撑海上风力机理论建模

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-13 DOI: 10.1016/j.marstruc.2025.103842

Yiming Huang , Qingzhi Wang , Jintao Jiang , Piguang Wang , Mi Zhao , Xiuli Du

{"title":"Theoretical modeling of simplified offshore wind turbines with monopile support under multiple environmental load coupling","authors":"Yiming Huang , Qingzhi Wang , Jintao Jiang , Piguang Wang , Mi Zhao , Xiuli Du","doi":"10.1016/j.marstruc.2025.103842","DOIUrl":"10.1016/j.marstruc.2025.103842","url":null,"abstract":"<div><div>A theoretical framework is formulated to examine the simplification methodology for monopile-supported offshore wind turbine systems (OWTs), where soil-monopile interactions are represented as a spring-damper mechanism under multi-hazard conditions involving earthquake, wave, and wind loads. The study begins by establishing an integrated OWTs model incorporating interdependent physical phenomena: three-dimensional spring-damping elements characterize soil-monopile dynamics, hydrodynamic impedance functions quantify water-monopile interactions in submerged conditions, linearized wave equations govern wave loads, while wind loads acting on rotor blades. The dynamic behavior of OWTs is subsequently analyzed through three methodological components: implementation of domain-specific boundary constraint formulations, decomposition of scalar potential fields, and application of state-space transfer matrix techniques. Comparative validation protocols demonstrate the computational precision of the proposed non-simplified analytical framework relative to established reference methodologies, while systematic benchmarking reveals critical distinctions between this rigorous solution and conventional spring-damper approximations. Parametric sensitivity investigations are subsequently conducted using the developed model to quantify influential design variables. These analytical advancements establish a theoretical foundation for optimized numerical modeling of offshore wind energy infrastructure, particularly in addressing the multi-physical coupling inherent in monopile-supported structural systems.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103842"},"PeriodicalIF":4.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941657","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 of OWTs with scoured jacket foundation subjected to seismic and environmental loads 地震和环境荷载作用下带冲刷护套基础的水轮机动力响应

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-12 DOI: 10.1016/j.marstruc.2025.103839

Yikang Wang , Chen Wang , Hao Zhang , Fayun Liang , Zhouchi Yuan

{"title":"Dynamic response of OWTs with scoured jacket foundation subjected to seismic and environmental loads","authors":"Yikang Wang , Chen Wang , Hao Zhang , Fayun Liang , Zhouchi Yuan","doi":"10.1016/j.marstruc.2025.103839","DOIUrl":"10.1016/j.marstruc.2025.103839","url":null,"abstract":"<div><div>Tetrapod piled jacket (TPJ) foundations have been widely employed to support offshore wind turbines (OWTs). However, under the influence of environmental loads and wave-current-induced scouring phenomenon, there remains a notable research deficiency concerning the seismic response of TPJ supported OWT system. In these earthquake-prone areas, TPJ-supported OWT may encounter excessive overturning deformations and dynamic responses during its service life. To fill the gap in the current seismic design codes for TPJ foundations, this study comprehensively analyzed the seismic response of the TPJ system subjected to stochastic environmental loads at scoured sites, considering several potential influencing factors, such as the scour depth, soil strength, seismic frequency content and intensity. It is found that the high-stiffness steel framework of the TPJ system demonstrates a robust ability to withstand the lateral responses of acceleration and deformation. The development of scour depth alters the failure location of the TPJ structure and the pile-soil interaction mechanism, leading to an expansion in the acceleration and bending moment response, and an uplift trend in the pile foundation. Although higher soil strength improves the resistance of the TPJ system to vertical and horizontal deformations, it also amplifies the acceleration and bending moment responses of the TPJ system. Notably, the bending moments are greater in the leeward piles compared to the windward piles, necessitating additional protective measures in the design. These findings offer valuable insights into the seismic response of TPJ-supported OWTs in complex paralic environments.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103839"},"PeriodicalIF":4.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936017","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

Axial compression behavior of circular high-strength self-compacting concrete-filled steel tubes with chloride corrosion 含氯腐蚀的圆形高强自密实钢管混凝土轴压特性研究

IF 4 2区工程技术

Marine Structures Pub Date : 2025-05-12 DOI: 10.1016/j.marstruc.2025.103844

Weiwei Wang , Xuetao Lyu , Zhiyuan Zheng , Ben Li , Jun Zheng , Fanghong Wu , Yang Yu

{"title":"Axial compression behavior of circular high-strength self-compacting concrete-filled steel tubes with chloride corrosion","authors":"Weiwei Wang , Xuetao Lyu , Zhiyuan Zheng , Ben Li , Jun Zheng , Fanghong Wu , Yang Yu","doi":"10.1016/j.marstruc.2025.103844","DOIUrl":"10.1016/j.marstruc.2025.103844","url":null,"abstract":"<div><div>Concrete-filled steel tubes (CFSTs) are widely used as bridge piers in marine environments, where the outer steel tubes are highly susceptible to chloride corrosion, which degrades the carrying capacity of structural elements. This paper presents an experimental investigation on the axial compressive behavior of high-strength self-compacting concrete-filled steel tubes (HSSCCFST) with chloride corrosion. The study aims to determine the effects of steel ratio and corrosion rate on the behavior of steel plate and HSSCCFST columns subjected to chloride corrosion. The failure modes, load-displacement curves, load-strain relationship, carrying capacity, stiffness, ductility, confinement effect coefficient, strength index, and strength reduction factor are analyzed. The results show that the thicker the wall thickness of steel coupon, the more normal fracture occurs in the steel tensile coupons, the mechanical properties of steel coupons decrease as the corrosion rate increases. The axial compressive stiffness, ductility, residual ultimate strength factor of HSSCCFST decrease with the increase of corrosion rate, however, the impact of chloride corrosion deceases with the increase of steel ratio. Besides, the increase in corrosion rate weakens the composite action between the steel tube and the concrete core. A simplified formula of ultimate strength reduction factor considering corrosion rate and steel ratio is proposed, and CECS 104–99 is recommended to predict the ultimate strength of HSSCCFST stub column affected by chloride corrosion.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"103 ","pages":"Article 103844"},"PeriodicalIF":4.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936016","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