Ocean Engineering最新文献_第8页

Coupled seepage stress analysis and design optimization of deep buried subsea tunnels 深埋海底隧道耦合渗流应力分析及设计优化

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-09 DOI: 10.1016/j.oceaneng.2026.124576

Mumtaz Khan , Muhammad Shoaib Anwar , Taseer Muhammad , Taoufik Saidani

Groundwater ingress and the associated hydrostatic pressure pose critical challenges to the structural integrity of deep-buried underwater tunnels. Although numerical methods are widely employed to evaluate these coupled effects, existing analytical solutions often oversimplify the hydraulic boundary conditions or neglect the penetrative nature of seepage-induced body forces within the lining. To address these limitations, this study develops a closed-form analytical framework for the coupled seepage–stress analysis of deep-buried circular tunnels under semi-infinite hydraulic boundary conditions. The method of images is used to satisfy the free-surface constraint, while the seepage pressure gradient is incorporated into the mechanical equilibrium equations as a volumetric load through the stress function approach. This formulation explicitly captures the hydraulic barrier effect induced by permeability contrast between the lining and the surrounding medium. Parametric analyses demonstrate that lining permeability is the dominant factor controlling the structural response: decreasing permeability effectively suppresses inflow but simultaneously amplifies the external hydraulic head and circumferential stress at the inner tunnel wall. For the benchmark configuration considered, a conditional optimal permeability window is identified that balances inflow mitigation and structural safety. The proposed framework enables this window to be recalibrated for project-specific geometric and hydrogeological conditions, thereby providing a generalizable basis for watertightness-oriented design and vulnerability assessment of underwater tunnel linings.

地下水的进入及其伴随的静水压力对深埋水下隧道的结构完整性提出了严峻的挑战。尽管数值方法被广泛用于评估这些耦合效应，但现有的解析解往往过于简化了水力边界条件，或忽视了衬砌内部渗水诱发的体力的渗透性。为了解决这些局限性，本研究开发了半无限水力边界条件下深埋圆形隧道渗流-应力耦合分析的封闭式分析框架。采用图像法满足自由面约束，通过应力函数法将渗流压力梯度作为体积载荷纳入力学平衡方程。这个公式明确地反映了由衬里和周围介质之间的渗透率对比引起的水力屏障效应。参数分析表明，衬砌渗透率是控制结构响应的主导因素，降低渗透率可以有效抑制涌水，但同时也会增大隧道内壁的外水头和周向应力。对于考虑的基准配置，确定了平衡流入缓解和结构安全的条件最佳渗透率窗口。拟议的框架使该窗口能够根据具体项目的几何和水文地质条件进行重新校准，从而为水下隧道衬砌的水密性设计和脆弱性评估提供了可推广的基础。

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引用次数: 0

Experimental investigation and constitutive model on tensile properties of different steels considering seawater corrosion 考虑海水腐蚀的不同钢的拉伸性能试验研究及本构模型

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-09 DOI: 10.1016/j.oceaneng.2026.124586

Yang Hu, Huiyun Chen, Yilong Feng, Yanlu Zhang, Xinyue Gao, Xiangwen Ji

Steel structures are widely used in marine engineering, but the aggressive nature of marine environments poses significant challenges to the long-term safety of these structures due to corrosion. Selecting and evaluating of steel in marine engineering have become a critical topic. The evolution laws in material properties of carbon steel, low alloy structural steel, stainless steel and weathering steel during the initial stage of seawater corrosion were investigated through artificial seawater corrosion tests and static tensile tests. The mechanical reduction coefficient and the pitting corrosion influence coefficient of four typical steels were defined and compared. The analysis results indicated that pitting corrosion had the greatest impact on the mechanical properties of stainless steel, with an influence coefficient exceeding 0.95 and had the least impact on weathering steel, with an influence coefficient of about 0.2. Two simplified constitutive models of four materials after seawater corrosion were proposed and verified, and suggestions for the selection of different materials were given. The engineering evaluation method based on constitutive simplification models was established, providing scientific basis and technical support for the reliability research of marine structures.

钢结构在海洋工程中得到了广泛的应用，但海洋环境的侵蚀性对钢结构的长期安全性提出了重大挑战。海洋工程中钢材的选择与评价已成为一个重要的课题。通过人工海水腐蚀试验和静拉伸试验，研究了碳钢、低合金结构钢、不锈钢和耐候钢在海水腐蚀初期材料性能的演变规律。定义并比较了4种典型钢的力学折减系数和点蚀影响系数。分析结果表明，点蚀对不锈钢力学性能的影响最大，影响系数超过0.95；对耐候钢的影响最小，影响系数约为0.2。提出并验证了海水腐蚀后4种材料的简化本构模型，并对不同材料的选择提出了建议。建立了基于本构简化模型的工程评价方法，为海洋结构的可靠性研究提供了科学依据和技术支持。

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引用次数: 0

Fully nonlinear analysis of wave diffraction by cylinders on a sloping terrain using the Irrotational Green-Naghdi model 用irrotation Green-Naghdi模型对倾斜地形上圆柱波衍射的完全非线性分析

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-07 DOI: 10.1016/j.oceaneng.2026.124375

Gao-fei Su , Ying Gou , Bo Zhou , Bin Teng , Yuzhu Pearl Li

This study develops a finite element numerical model based on the Irrotational Green-Naghdi (IGN) equations to investigate wave diffraction around an infinitely long array of side-by-side vertical cylinders under head-sea conditions on a sloping seabed. In numerical implementation, the horizontal momentum equations of the IGN equations are solved simultaneously in the local coordinate system of curved boundaries to ensure precise satisfaction of the impermeable boundary condition. Model validation is performed through wave flume experiments measuring wave diffraction around a single vertical cylinder. The numerical predictions of wave forces and free water surface elevations show strong consistency with experimental measurements. The validated model is applied to systematically examine how water depth, seabed slope, cylinder spacing, and cylinder radius influence the wave forces. Numerical analysis demonstrates that wave resonance occurs when the spacing between adjacent cylinders equals half, one, or two times the incident wavelength, amplifying the wave forces. Moreover, for incident wave frequencies just below the resonance frequency, the steep seabed can cause peaks or troughs of the wave surface elevation behind the cylinders to shift between adjacent cylinders, resulting in wave force reduction.

本研究建立了一个基于Irrotational Green-Naghdi （IGN）方程的有限元数值模型，以研究在倾斜海床上，在头海条件下，波浪绕无限长并排垂直圆柱体阵列的衍射。在数值实现中，IGN方程的水平动量方程在弯曲边界的局部坐标系中同时求解，以确保精确满足不渗透边界条件。通过波浪水槽实验，测量绕单个垂直圆柱体的波衍射，对模型进行验证。波浪力和自由水面高度的数值预测结果与实验结果具有很强的一致性。应用验证的模型系统地研究了水深、海底坡度、柱体间距和柱体半径对波浪力的影响。数值分析表明，当相邻圆柱体之间的间距等于入射波长的一半、一倍或两倍时，会发生波共振，从而放大波浪力。此外，对于刚好低于共振频率的入射波频率，陡峭的海床会使柱面后波面高程的波峰或波谷在相邻柱面之间发生移位，导致波浪力减小。

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引用次数: 0

Cavitation-sand synergistic erosion in Francis turbines: Three-Phase flow simulation and runner optimization for enhanced operational stability 混流式水轮机的空化-砂协同侵蚀：三相流模拟和转轮优化，以提高运行稳定性

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-07 DOI: 10.1016/j.oceaneng.2026.124563

Longgang Sun , Tingting Ji , Zhaoning Wang , Yanyan Li , Pengcheng Guo

Francis turbines operating under sediment-laden conditions suffer from cavitation and sediment erosion, whose synergistic interaction critically threatens operational stability. This study employs a three-phase numerical framework for a Francis turbine and develops a multi-objective optimization strategy integrating hydraulics enhancement, cavitation alleviation, and erosion resistance. Two inter-blade cavitation vortices and a sheet-like flow-separation cavitation are identified at different guide vane openings, causing flow blockage, velocity redistribution, and particle accumulation near vortex peripheries. Erosion is strongly correlated with these vortical structures, exhibiting high intensity at vortex boundaries due to elevated particle velocity and concentration, whereas remaining weak in vortex cores and wall-vortex interfaces. Runner optimization with increased inlet-edge twist effectively modifies the flow pattern and sediment transport. Under two inter-blade cavitation vortex conditions, optimized hydraulic efficiency increases by 2.858% and 1.846%, with cavitation volume reduced by 33.405% and 62.265%, and average blade erosion rate decreased by 19.659% and 23.363%, respectively. Under the sheet-like cavitation condition, hydraulic efficiency increases by 0.169%, accompanied by reductions of 91.898% in cavitation volume and 30.868% in erosion rate. Morphologically, high-erosion regions induced by inter-blade vortices are significantly alleviated. These findings elucidate cavitation-erosion coupling mechanisms and confirm the effectiveness of integrated optimization in suppressing cavitation and erosion.

混流式水轮机在泥沙淤积条件下运行时存在空化和泥沙侵蚀问题，二者的协同作用严重威胁着水轮机的运行稳定性。本文采用三相数值框架对混流式水轮机进行了研究，并开发了一种集水力增强、空化缓解和抗冲蚀为一体的多目标优化策略。在不同导叶开度处发现了两个叶片间空化涡和一个片状流分离空化涡，在涡周附近造成流动阻塞、速度重分布和颗粒堆积。侵蚀与这些涡旋结构密切相关，由于粒子速度和浓度的提高，在涡旋边界处表现出高强度，而在涡旋核心和壁面涡旋界面处则表现出弱强度。优化流道，增加入口边缘扭转，有效地改变了水流模式和泥沙输运。两种叶片间空化涡条件下，优化后的水力效率分别提高了2.858%和1.846%，空化体积分别减小了33.405%和62.265%，叶片平均侵蚀率分别降低了19.659%和23.363%。在片状空化条件下，水力效率提高了0.169%，空化体积减小了91.898%，侵蚀速率减小了30.868%。在形态上，叶片间涡诱导的高侵蚀区明显减轻。这些发现阐明了空化-侵蚀耦合机制，证实了综合优化在抑制空化和侵蚀方面的有效性。

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引用次数: 0

Design optimization and hydrodynamic performance analysis of bidirectional horizontal-axis tidal turbine 双向水平轴潮汐水轮机设计优化及水动力性能分析

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-07 DOI: 10.1016/j.oceaneng.2026.124524

Shuqi Wang , Shuxian Li , Baifu Bian , Zijun Zhang , Bin Guo , Hui Tang

To design a high-efficiency bidirectional horizontal-axis tidal turbine (HATT) capable of adapting to tidal current energy's reciprocating characteristics, the designed S-type reversible airfoil is optimized. This study integrates class-shape transformation parameterization, computational fluid dynamics (CFD) method, and multi-island genetic algorithm to establish an optimization method for S-type reversible airfoil with the objective of maximizing lift-to-drag ratio and lift coefficient. Subsequently, the blade chord length and pitch angle distributions are obtained by designing a bidirectional HATT based on the Wilson design method. Finally, the hydrodynamic performance of the bidirectional HATT is analyzed based on the CFD method. Results demonstrate that the proposed optimization method significantly improves the lift-to-drag ratio of the S-type reversible airfoil, which is close to 40 at Reynolds number 7.3E05, and the lift-to-drag ratio increases gradually with the Reynolds number. The power coefficient of the bidirectional HATT based on the optimized S-type reversible airfoil is significantly improved, approaching 45% at a flow velocity of 2 m/s. Meanwhile, the thrust coefficient significantly decreases and then gradually decreases after the tip speed ratio reaches 6. Therefore, the bidirectional blade designed in this paper effectively improves the high efficiency and safety of bidirectional HATT, showing great potential for engineering applications.

为了设计一种能够适应潮汐能往复特性的高效双向水平轴潮汐涡轮机，对设计的s型可逆翼型进行了优化。结合类形变换参数化、计算流体动力学（CFD）方法和多岛遗传算法，建立了以升阻比和升力系数最大化为目标的s型可逆翼型优化方法。随后，基于Wilson设计方法设计了双向HATT，得到了叶片弦长和俯仰角的分布。最后，基于CFD方法对双向HATT的水动力性能进行了分析。结果表明，该优化方法显著提高了s型可逆翼型的升阻比，在雷诺数为7.3E05时升阻比接近40，且升阻比随雷诺数的增加而逐渐增大。优化后的s型可逆翼型双向HATT的功率系数显著提高，在2m /s流速下接近45%。同时，推力系数显著减小，在叶尖速比达到6后逐渐减小。因此，本文设计的双向叶片有效地提高了双向HATT的高效率和安全性，具有很大的工程应用潜力。

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引用次数: 0

Safety of crew transfer from CTV to offshore wind turbines - A state-of-the-art review 机组人员从CTV转移到海上风力涡轮机的安全性——一项最新的审查

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-07 DOI: 10.1016/j.oceaneng.2026.124537

Krish Thiagarajan Sharman , Malakonda Reddy Lekkala , Moohyun Kim , Suqin Wang

Personnel transfer via Crew Transfer Vessel (CTV) onto an offshore wind turbine is a safety-critical operation constrained by sea-state, performance of the CTV and of the wind turbine platform. This paper reviews the recent growth in the wind industry and increasing awareness of risk evaluation and safety implementation during crew transfer. Although several types of service vessels are in use, this paper focuses on CTVs due to their growing market share and their prevalent use in the emerging US offshore wind market. Recent studies on CTV have focused on new vessel designs, vessel docking systems, motion-compensated walkway systems, and flexible bridge systems. In this paper, we survey the state-of-the-art in the offshore wind industry worldwide and examine best practices recommended for offshore operations involving CTVs and Walk-to-Work (W2W) systems to enhance safety, efficiency, and overall operational integrity. Minimizing operational downtime is essential for enhancing the competitiveness of the offshore wind energy sector. Cost drivers like these often conflict with safety oriented Recommended Practice (RP), which are by nature conservative. Thus, we highlight the role of international guidelines such as IMCA, ACP Offshore Transfer Guidance, and classification societies rules in standardizing safety procedures, vessel design, and operability criteria. Looking to the future, the integration of digital twins and advanced numerical modelling, alongside emerging low-emission propulsion concepts for CTVs, offers potential pathways to improve both safety and cost-effectiveness, while aligning the offshore wind sector with global decarbonization goals.

通过船员转运船（CTV）将人员转移到海上风力涡轮机上是一项安全关键操作，受海况、CTV和风力涡轮机平台性能的限制。本文回顾了近年来风电行业的发展以及对机组转移过程中风险评估和安全实施的日益提高的认识。虽然有几种类型的服务船正在使用，但由于ctv的市场份额不断增长，并且在新兴的美国海上风电市场中普遍使用，因此本文主要关注ctv。近年来对CTV的研究主要集中在新型船舶设计、船舶对接系统、运动补偿人行道系统和柔性桥梁系统等方面。在本文中，我们调查了全球海上风电行业的最新技术，并研究了涉及ctv和Walk-to-Work （W2W）系统的海上作业推荐的最佳实践，以提高安全性、效率和整体操作完整性。减少运营停机时间对于提高海上风能行业的竞争力至关重要。像这样的成本驱动因素经常与以安全为导向的推荐实践（RP）相冲突，RP本质上是保守的。因此，我们强调国际准则的作用，如IMCA、ACP海上转运指南和船级社规则在标准化安全程序、船舶设计和可操作性标准方面的作用。展望未来，数字双胞胎和先进的数值建模的整合，以及ctv新兴的低排放推进概念，为提高安全性和成本效益提供了潜在的途径，同时使海上风电行业与全球脱碳目标保持一致。

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引用次数: 0

Quantitative video-based wave parameter estimation using a 3D-CNN and two-stage transfer learning framework 使用3D-CNN和两阶段迁移学习框架的定量视频波参数估计

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-07 DOI: 10.1016/j.oceaneng.2026.124561

Hanwen Liu , Jingxi Qin , Zilong Ti

Accurate and efficient wave monitoring is vital for the safety and long-term operation of large-scale marine infrastructures, yet conventional approaches such as Doppler profilers, buoys, and fixed stations are costly, difficult to maintain, and limited in coverage. Recent advances in computer vision have enabled non-contact, video-based methods for measuring. However, most existing studies rely on single-frame analysis or require large volumes of labeled field data, which limits their robustness and applicability. To overcome these challenges, this study develops a deep learning framework for the quantitative identification of wave parameters. The framework employs a 3D Convolutional Neural Network (3D-CNN) to extract spatio-temporal features from monocular video sequences, combined with a two-stage transfer learning strategy that leverages simulated wave data for pre-training and a small set of in-situ measurements for fine-tuning. Additionally, tailored input feature design and denoising based on Proper Orthogonal Decomposition (POD) are incorporated to enhance performance under complex visual conditions. Extensive experiments demonstrate that the proposed approach achieves high accuracy in predicting significant wave height and peak period, while substantially reducing reliance on costly field measurements. The results highlight the potential of the framework as a cost-effective, robust, and scalable solution for non-contact wave monitoring in marine engineering applications.

准确有效的波浪监测对于大型海洋基础设施的安全和长期运行至关重要，但传统的方法，如多普勒剖面仪，浮标和固定站，成本高，难以维护，覆盖范围有限。计算机视觉的最新进展使非接触式、基于视频的测量方法成为可能。然而，大多数现有研究依赖于单帧分析或需要大量标记的现场数据，这限制了它们的鲁棒性和适用性。为了克服这些挑战，本研究开发了一个用于波浪参数定量识别的深度学习框架。该框架采用3D卷积神经网络（3D- cnn）从单目视频序列中提取时空特征，并结合两阶段迁移学习策略，利用模拟波数据进行预训练，并利用一小组原位测量进行微调。此外，还结合了定制输入特征设计和基于适当正交分解（POD）的去噪，以提高在复杂视觉条件下的性能。大量的实验表明，该方法在预测重要波高和峰值周期方面具有很高的精度，同时大大减少了对昂贵的现场测量的依赖。结果突出了该框架作为海洋工程应用中非接触式波浪监测的成本效益，鲁棒性和可扩展性解决方案的潜力。

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引用次数: 0

Multidisciplinary coupling optimization for gradual changes in pitch angle in deep-sea underwater glider 深海水下滑翔机俯仰角渐变多学科耦合优化

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-07 DOI: 10.1016/j.oceaneng.2026.124547

Yuhong Ma , Ruiheng Xu , Wei Ma , Yu Song , Ming Yang , Jieru Song , Wei Wang

Underwater gliders (UGs) are widely deployed in oceanographic observation, which can carry various sensors. To improve the quality of observation data, higher requirements have been imposed on the pitch angle stability of UGs. This paper investigates the influence of key parameters on gradual changes in pitch angle of deep-sea underwater gliders (DUGs) based on the “Petrel-D″ glider and conducts parameter optimization design. During the optimization process, we employ the concurrent multi-objective subspace optimization framework and the non-dominated sorting genetic algorithm II (NSGA-II) algorithm to achieve integrated design of the structural system and control system. The impact mechanisms of DUG key parameters on pitch angle gradual changes are clarified, as well as the coupling effect between the vehicle structural system and control system. Mathematical models are established for integrated optimization design of the DUG. The distribution range of key DUG parameters is obtained by further analyzing the Pareto solution sets of the integrated design, and a multi-parameter collaborative optimization strategy is proposed. As verified in the sea trial, the pitch angle variation of the DUG could be maintained within 7° during the entire gliding process, verifying the effectiveness of multi-parameter collaborative optimization.

水下滑翔机在海洋观测中有着广泛的应用，它可以携带多种传感器。为了提高观测数据的质量，对无人机的俯仰角稳定性提出了更高的要求。本文以“海螺- d″”型深海水下滑翔机为研究对象，研究了关键参数对其俯仰角渐变的影响，并进行了参数优化设计。在优化过程中，我们采用并行多目标子空间优化框架和非支配排序遗传算法II （NSGA-II）算法，实现结构系统和控制系统的集成设计。阐明了DUG关键参数对俯仰角渐变的影响机理，以及车辆结构系统与控制系统之间的耦合效应。建立了综合优化设计的数学模型。通过进一步分析集成设计的Pareto解集，得到了关键参数的分布范围，并提出了多参数协同优化策略。经海试验证，在整个滑行过程中，DUG的俯仰角变化可以保持在7°以内，验证了多参数协同优化的有效性。

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引用次数: 0

Experimental study and analysis of flow field characteristics of floating breakwaters with different cross-sectional shapes 不同断面形状浮式防波堤流场特性的试验研究与分析

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-06 DOI: 10.1016/j.oceaneng.2026.124527

Bin Sun , Jianyu Wang , Danyang Di , Chunyang He , Feifei Wang

As a critical protective facility in marine engineering, floating breakwaters serve as an essential technical means for mitigating marine environmental risks and ensuring the safety of engineering structures. Given that the shape of floating breakwaters significantly influences their energy dissipation effectiveness, this study systematically investigates the wave attenuation efficiency and dynamic response characteristics of rectangular, trapezoidal, and triangular floating breakwaters. In the study, six floating breakwater models were constructed by designing trapezoidal floating breakwaters with six different base angles. A combined approach of physical wave tank experiments and numerical simulations was employed to analyze the wave attenuation performance and dynamic response characteristics of these six models. The findings reveal that under constant wave height, draft depth, and period conditions, the 45° trapezoidal floating breakwater, with its gentler slope, more effectively suppresses mooring force growth, thereby extending the service life of the floating structure. Furthermore, precise adjustment of the inclination angle enables optimization of the breakwater's wave-attenuation performance under various operational conditions.

浮式防波堤是海洋工程中重要的防护设施，是减轻海洋环境风险、保障工程结构安全的重要技术手段。鉴于浮式防波堤的形状对其耗能效果有显著影响，本研究系统地研究了矩形、梯形和三角形浮式防波堤的消波效率和动力响应特性。通过设计六种不同底角的梯形浮式防波堤，构建了六个浮式防波堤模型。采用物理波槽实验和数值模拟相结合的方法，对这6种模型的波衰减性能和动力响应特性进行了分析。研究结果表明，在一定波高、吃水深度和周期条件下，45°梯形浮式防波堤坡度较缓，能更有效地抑制锚泊力的增长，从而延长浮式结构的使用寿命。此外，倾斜角度的精确调整可以优化防波堤在各种操作条件下的减波性能。

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引用次数: 0

Experimental study of wave-induced seabed response around a jacket structure with different arrangements 不同布置夹套结构周围海底波致响应试验研究

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering

Pub Date : 2026-02-06 DOI: 10.1016/j.oceaneng.2026.124512

Chenglin Liu , Titi Sui , Hao Chen , Jisheng Zhang

The seabed response and instability induced by transient liquefaction are of great concern to coastal engineers and researchers, which could threaten the safety of offshore structures, such as wind turbine foundations. Recently, the jacket has become the most commonly used offshore pile foundation due to its larger carrying capacity and risk resistance performance. In this study, an experimental investigation of the wave-induced seabed response around a jacket foundation was conducted in a water flume. A total of 14 series of experiments were conducted to analyze the pore pressure variation with different loading conditions. Meanwhile, the influence of wave conditions and structure arrangements on the pore pressure distribution was also analyzed. Experimental results show that, (1) the pore pressure shows different distribution at piles’ upstream and downstream sides, the difference at the both ends of the jacket is obvious but slight at the two lateral piles; (2) the pore pressure amplitude increases with the angle between the structure’s symmetry axis and the flow direction, and the pore pressure inside the jacket is greater than that at the outer ends; (3) the asymmetrical arrangement of the jacket increases the liquefaction potential (I_L) around the structure.

瞬态液化引起的海底响应和失稳是海岸工程和研究人员非常关注的问题，它可能威胁到海上结构的安全，如风力发电机基础。近年来，导管套以其更大的承载能力和抗风险性能成为最常用的海上桩基。在水槽中，对导管基础周围波浪海床响应进行了试验研究。共进行了14组试验，分析了不同加载条件下孔隙压力的变化规律。同时，分析了波浪条件和结构布置对孔隙压力分布的影响。试验结果表明，(1)桩的孔压力在桩的上下游两侧分布不同，在桩的两端导管处差异明显，而在桩的两侧导管处差异不大；(2)孔压幅值随结构对称轴与流动方向夹角增大而增大，夹套内孔压大于外端孔压；(3)夹套的不对称布置增加了结构周围的液化势（IL）。

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引用次数: 0