Applied Ocean Research最新文献_第7页

Quasi-static punch shear behavior of glass/epoxy composite: Experimental and numerical study in artificial seawater environment 玻璃/环氧复合材料的准静态冲剪行为：人工海水环境中的实验和数值研究

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-09 DOI: 10.1016/j.apor.2024.104262

Ersan Kirar , Gokhan Demircan , Murat Kisa , Mustafa Ozen , Cenap Guven

Enhancing the understanding of how fiber-reinforced polymer composites respond to high-speed impacts is crucial, particularly in comparison to Quasi-Static Punch Shear Test (QS-PST). While researchers have extensively investigated QS-PST in FRP composites through experimental and numerical approaches, there's a notable gap in studies addressing the aging effects through both experimental and numerical methods. In this study, the QS-PST was conducted on S2 glass fiber reinforced epoxy composite materials aged in an artificial seawater environment. Composite plates were fabricated using Vacuum-assisted resin transfer molding (VARTM). Test samples were subjected to aging for durations of 4, 8, and 12 months. Experimental QS-PST were performed on the samples, followed by Finite Element Analysis (FEA) using LS-DYNA and the MAT 162 material model. The mechanical properties of the composite material were incorporated into the FEA and aging effects were simulated with a maximum error of 8.08% by using the proposed material model. The results indicated that the aging process led to a reduction in the punch shear strength of the composite by up to 26.84%. These findings provide valuable insights into the degradation mechanisms of composite materials in marine environments, aiding in the development of strategies for enhanced durability and performance in such conditions.

加强对纤维增强聚合物复合材料如何应对高速冲击的了解至关重要，尤其是与准静态冲剪试验（QS-PST）相比。虽然研究人员已通过实验和数值方法对玻璃纤维增强复合材料的 QS-PST 进行了广泛研究，但通过实验和数值方法研究老化效应的研究还存在明显差距。本研究对在人工海水环境中老化的 S2 玻璃纤维增强环氧树脂复合材料进行了 QS-PST 试验。复合材料板采用真空辅助树脂传递模塑（VARTM）工艺制作。测试样品的老化时间分别为 4 个月、8 个月和 12 个月。对样品进行了 QS-PST 试验，然后使用 LS-DYNA 和 MAT 162 材料模型进行了有限元分析（FEA）。将复合材料的机械性能纳入有限元分析，并使用所提出的材料模型模拟了老化效应，最大误差为 8.08%。结果表明，老化过程导致复合材料的冲剪强度降低了 26.84%。这些研究结果为了解复合材料在海洋环境中的降解机制提供了有价值的见解，有助于制定在此类条件下提高耐用性和性能的策略。

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引用次数: 0

Research on mechanical model for aligning dislocated underwater pipelines during replacement and repair 研究在更换和维修过程中对准错位水下管道的机械模型

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-09 DOI: 10.1016/j.apor.2024.104258

Yaya He , Yuguang Cao , Ying Zhen , Yanan Tan

Submarine pipelines are laid with elastic bending to adapt to the changes in seabed elevation, which usually results in the pipeline being in a pre-stressed state. When replacing and repairing those damaged pipelines, it is easy to encounter rebound and misalignment after pipeline cutting. Therefore, the alignment of the dislocated pipelines must be carried out before replacing and connecting the pipes. At present, some internationally advanced underwater rapid repair equipment only has the function of pipeline lifting, and cannot achieve precise alignment of dislocated pipelines on both sides. It lacks the alignment control model. This article focuses on the alignment problem of dislocated underwater pipelines during replacement and repair. Firstly, based on the Winkler elastic foundation beam and cantilever beam theory, a mechanical model for the alignment of dislocated pipelines is established. Then, an alignment control method is developed based on the mechanical model, and recommended the model's applicability conditions, design parameters, and safe usage range. Finally, the accuracy and reliability of both the alignment mechanics model and control method have been fully verified through numerical method. The established mechanical model and control method in this paper address the crucial issue of aligning misaligned underwater pipelines during repair, providing technical support for engineering applications. And they can be used to guide the design of aligning functional structure for underwater rapid maintenance equipment and also be applied in development of specific alignment schemes for pipeline misalignment scenarios.

海底管道的铺设是通过弹性弯曲来适应海床标高的变化，这通常会导致管道处于预应力状态。在更换和修复这些受损管道时，很容易遇到管道切割后反弹和错位的情况。因此，在更换和连接管道之前，必须对错位的管道进行对位。目前，一些国际先进的水下快速修复设备仅具有管道吊装功能，无法实现两侧错位管道的精确对中。它缺乏对位控制模型。本文主要研究水下错位管道在更换和修复过程中的对中问题。首先，基于温克勒弹性基础梁和悬臂梁理论，建立了错位管道对中的力学模型。然后，基于力学模型建立了对中控制方法，并推荐了模型的适用条件、设计参数和安全使用范围。最后，通过数值方法充分验证了对中力学模型和控制方法的准确性和可靠性。本文建立的力学模型和控制方法解决了水下管道修复过程中错位对中的关键问题，为工程应用提供了技术支持。本文建立的力学模型和控制方法解决了维修过程中水下管道错位的关键问题，为工程应用提供了技术支持，可用于指导水下快速维修设备的对中功能结构设计，也可应用于管道错位情况下特定对中方案的开发。

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引用次数: 0

Evaluation on the applicability of similitude laws for scaled model design in underwater shaking table tests in the elastic stage 对弹性阶段水下振动台试验中按比例模型设计的模拟法适用性的评估

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-09 DOI: 10.1016/j.apor.2024.104252

Qinghua Han , Mengyu Li , Zhongxing Wang

This paper presents a comprehensive evaluation on the applicability of similitude laws for scaled model design in underwater shaking table (UST) model tests. Scaled models of a sea-crossing bridge pier were first designed in this study, considering five similitude laws and adopting different values of key scale factors for each similitude law. Following this, an extensive numerical database of both prototype and scaled model responses was generated based on validated numerical models, considering structures under pure earthquake (E), earthquakes in still water (ES) as well as coupled earthquake and wave-current actions (EWC). The obtained numerical results were first utilized to investigate the influence of key scale factors on predicted responses. It has been found that density and acceleration distortion lead to underestimation of predicted responses, while geometry distortion results in amplifying predictions. Furthermore, the applicability of similitude laws for designing scaled models was evaluated underpinned by the numerical database. The evaluation results provided suggestions for the proper design of scaled models under different loading conditions, regarding the selection and implementation of similitude laws.

本文对水下振动台（UST）模型试验中按比例模型设计的模拟定律的适用性进行了综合评估。本研究首先设计了跨海大桥桥墩的比例模型，考虑了五种模拟定律，并对每种模拟定律采用了不同的关键比例因子值。随后，根据经过验证的数值模型，生成了大量原型和比例模型响应的数值数据库，考虑了纯地震（E）、静水地震（ES）以及地震和波流耦合作用（EWC）下的结构。首先利用获得的数值结果研究了关键尺度因素对预测响应的影响。研究发现，密度和加速度变形会导致预测响应被低估，而几何变形则会导致预测响应被放大。此外，在数值数据库的支持下，还对设计缩放模型的相似性法则的适用性进行了评估。评估结果为在不同加载条件下正确设计按比例模型提供了有关选择和实施模拟法的建议。

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引用次数: 0

Hydrodynamic analysis of an aquaculture tank-type floating breakwater integrated with perforated baffles 带穿孔挡板的水产养殖槽式浮动防波堤的水动力分析

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-08 DOI: 10.1016/j.apor.2024.104261

Sen Wang , Tiao-Jian Xu , Tong-Yan Wang , Guo-Hai Dong , Hui-Min Hou

An innovative approach that integrates the floating breakwater (FB) with an offshore aquaculture tank is proposed to enhance economic benefits and hydrodynamic properties. To study the hydrodynamics of the integrated structure, a time-synchronized spatial-separated strategy is proposed and applied to the computational fluid dynamics (CFD) to facilitate the complex coupling between waves, mooring force, sloshing flow with the perforated baffle, and body motion. The mooring constraint was achieved by incorporating the catenary mooring theory, as well as employing the volume-averaged porous theory to simulate the perforated baffle effect to provide a low-energy environment required by aquaculture. Corresponding experimental tests were conducted to validate the reliability of the numerical model. The motion response, transmission and reflection coefficients, and sloshing behavior are analyzed to evaluate the hydrodynamics of the integrated structure. Besides, an index referred to as area-weighted-average velocity is introduced to further quantify the kinetic energy of sloshing flow. Results reveal the proposed aquaculture tank-type floating breakwater (AFB) can serve well as tuned liquid dampers (TLDs) to reduce the roll motion, and greatly improve the wave-attenuating capacity. Furthermore, the perforated baffles effectively weaken the sloshing energy at medium and finite filling depths, which are commonly operating depths for aquaculture in a floating closed containment system (FCCS). Overall, the floating breakwater integrated with the aquaculture tank is feasible due to a series of advantages.

为提高经济效益和水动力特性，提出了一种将浮式防波堤（FB）与近海水产养殖池相结合的创新方法。为研究集成结构的水动力特性，提出了一种时间同步空间分离策略，并将其应用于计算流体动力学（CFD），以促进波浪、系泊力、带孔挡板的荡流和主体运动之间的复杂耦合。系泊约束是通过结合导管系泊理论来实现的，同时采用体积平均多孔理论来模拟穿孔挡板效应，以提供水产养殖所需的低能耗环境。为验证数值模型的可靠性，还进行了相应的实验测试。分析了运动响应、传输和反射系数以及荡流行为，以评估集成结构的流体动力学。此外，还引入了一个称为面积加权平均速度的指标，以进一步量化荡流的动能。研究结果表明，所提出的水产养殖槽式浮动防波堤（AFB）可以很好地用作调谐液体阻尼器（TLD），以减少滚动运动，并大大提高消波能力。此外，穿孔挡板还能有效削弱中等填充深度和有限填充深度的荡能，而这正是浮式封闭围堰系统（FCCS）中水产养殖的常用操作深度。总之，由于具有一系列优点，与水产养殖池一体化的浮式防波堤是可行的。

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引用次数: 0

Analysis of subsidence patterns of the formation around the wellbore during deepwater natural gas hydrate test production conditions 深水天然气水合物试采条件下井筒周围地层下沉模式分析

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-08 DOI: 10.1016/j.apor.2024.104257

Chao Fu , Jin Yang , Yang Long , Qishuai Yin , Lei li , Zhiqiang Hu , Minghe Zhang , Mengjie Lu , Xiao Li , Zhangxing (John) Chen , Huizhen Ma

Deep-water natural gas hydrates are commonly found in muddy siltstone at shallow seabed depths. The land subsidence caused by the continuous dissociation of hydrate can influence the stability of the subsea wellhead and facilities. The analysis of formation subsidence pattern around wellbore is helpful to avoid the risk of field operation. A multi-field coupled model for hydrate extraction experiments was established, considering the coupling effects of seepage, mechanical, thermal, and chemical fields based on the storage characteristics of hydrates and the properties of submarine soils. Based on the formation physical parameters and wellbore parameters of the Shenhu area in the South China Sea, a numerical simulation method was used to analyze the formation subsidence pattern around the wellbore under hydrate production test conditions, and a sensitivity analysis of subsidence factors was completed. According to the subsidence patterns obtained, combined with the field operation conditions, the hazardous loads on the conductor throughout its lifecycle during the hydrate production test process were analyzed. A design method for the minimum mud depth of the conductor under hydrate production test conditions was provided. The study of seabed subsidence patterns during natural gas hydrate production tests in deep-water sea is helpful in reducing the instability risk of subsea wellheads and ensuring operation security, which provides a certain of reference for the design of natural gas hydrate production test engineering.

深水天然气水合物通常存在于浅海海底的泥质粉砂岩中。水合物不断解离造成的陆地沉降会影响海底井口和设施的稳定性。对井筒周围地层下陷模式的分析有助于规避油田作业风险。根据水合物的存储特性和海底土壤的属性，考虑渗流、机械、热和化学场的耦合效应，建立了水合物提取实验的多场耦合模型。根据南海神狐地区的地层物理参数和井筒参数，采用数值模拟方法分析了水合物开采试验条件下井筒周围地层的下沉规律，并完成了下沉因素的敏感性分析。根据得到的下沉规律，结合现场作业条件，分析了水合物生产试验过程中导体在整个生命周期内的危险载荷。提供了水合物生产试验条件下导体最小泥浆深度的设计方法。对深水海域天然气水合物生产试验过程中海底沉降规律的研究，有助于降低海底井口失稳风险，确保作业安全，为天然气水合物生产试验工程设计提供了一定的参考。

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引用次数: 0

The impact performance of concrete-filled double-skin steel tubes under seawater corrosion: A review 混凝土填充双层钢管在海水腐蚀下的抗冲击性能：综述

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-07 DOI: 10.1016/j.apor.2024.104248

Da Gao , Feifei Liu , Mingxuan Lin , Tianxiang Zhao , Jigang Zhang , Gaoli He

The study of the impact resistance of concrete-filled double-skin steel tube structures in the ocean environment is essential to ensuring the safety and reliability of ocean engineering structures, and it can also promote technological progress and industrial development in related fields. Thus, this review focuses on the effect of seawater corrosion on the impact performance of concrete-filled double-skin steel tube structural members. The effects of seawater corrosion on the tensile, compressive, and hysteretic properties of steel are first summarized. Secondly, the corrosion test methods currently used in most tests, such as salt spray, immersion, and artificially accelerated corrosion, are reviewed. The research progress on the impact performance of concrete-filled double-skin steel tube members, joints and corroded concrete-filled double-skin steel tube structures is then systematically summarized. Such members mainly absorb impact through overall bending deformation. The hollow ratio, boundary conditions and other factors strongly influence their impact performance. Corrosion of course weakens the impact properties. Recommendations for further study on the impact performance of seawater-corroded steel structures are provided.

研究海洋环境中混凝土填充双层钢管结构的抗冲击性能，对于确保海洋工程结构的安全性和可靠性至关重要，同时也能促进相关领域的技术进步和产业发展。因此，本综述重点讨论海水腐蚀对混凝土填充双层钢管结构构件抗冲击性能的影响。首先总结了海水腐蚀对钢材拉伸、压缩和滞后特性的影响。其次，综述了目前大多数试验中使用的腐蚀试验方法，如盐雾、浸泡和人工加速腐蚀。然后，系统总结了混凝土填充双层钢管构件、接头和腐蚀混凝土填充双层钢管结构冲击性能的研究进展。此类构件主要通过整体弯曲变形吸收冲击力。中空比、边界条件和其他因素对其冲击性能有很大影响。腐蚀当然会削弱其冲击性能。本文提出了进一步研究海水腐蚀钢结构冲击性能的建议。

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引用次数: 0

Numerical and experimental study of asymmetrical wave loads and hydroelastic responses of ship in oblique regular waves 非对称波浪载荷和船舶在斜向规则波浪中的水弹性响应的数值和实验研究

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-05 DOI: 10.1016/j.apor.2024.104254

Zhenwei Chen , Jialong Jiao , Xing Chang , Bowen Ma

In this paper, the global motions and wave loads on a large bow-flare ship in oblique regular waves considering hydroelastic effects are studied both numerically and experimentally. Numerical simulations of the ship's asymmetrical motions and loads in waves are conducted using a CFD-FEM two-way coupled method. The segmented model tank test is also conducted by using a hybrid structural backbone beam to measure both the sectional vertical bending moment and torsional moment. The numerical results are verified and validated by analyzing the ship modal behaviour, roll free decay curve, motions and loads and comparing with the experiment results. The influence of wave heading angle, wave length, wave height and ship speed on the wave loads including sectional bending moment and torsion moment are comprehensively studied with the numerical and experimental results. The relationship among vertical bending moment, horizontal bending moment and torsion moment is also discussed.

本文从数值和实验两方面研究了考虑到水弹性效应的倾斜规则波浪中大型艏侧帆船的全局运动和波浪载荷。采用 CFD-FEM 双向耦合方法对船舶在波浪中的不对称运动和载荷进行了数值模拟。此外，还使用混合结构骨架梁进行了分段模型油舱试验，以测量断面垂直弯矩和扭转力矩。通过分析船舶模态行为、自由滚动衰减曲线、运动和载荷，并与实验结果进行比较，对数值结果进行了验证和确认。结合数值和实验结果，全面研究了波向角、波长、波高和船速对波浪载荷（包括截面弯曲力矩和扭转力矩）的影响。还讨论了垂直弯矩、水平弯矩和扭转力矩之间的关系。

引用次数: 0

Dynamic behavior of piled jacket offshore wind turbines based on integrated aero-servo-hydro-SSI-OWT model 基于集成航空-伺服-水力-SSI-OWT 模型的桩式护套海上风力涡轮机的动态特性

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-05 DOI: 10.1016/j.apor.2024.104255

Mengtao Xu , Zhen Guo , Lilin Wang , Ben He , Wenjie Zhou , Hang Xu , Long Teng

Jacket foundation is typically the preferred choice for Offshore Wind Turbines (OWTs) erected in water depth varying from 40 m to 80 m. In this paper, an integrated dynamic analysis model is designed to study the coupling between aerodynamics, servodynamics, hydrodynamics, soil-structure interaction for piled jacket OWTs. The performances of the AeroDyn and ServoDyn modules are verified by FAST, showcasing their applicability under deterministic and stochastic environmental conditions. The OWT dynamic responses, especially for t-z modeling, stress-transfer mechanism and structural fatigue damage, are subsequently studied. The overall deformation of the jacket calculated by the nonlinear elastic t-z curve in the API guideline, is overwhelmed by the t-z curve formulated using bounding surface plasticity framework, due to the ignorance of the loading history effect. Accompanied by a “compressed-released-recompressed” stress-transfer process, the downwind tube would experience high stress level, hence necessitating more attention in the ultimate limit state design of piled jacket structure. Otherwise, the upwind tube seems to be more decisive to the fatigue limit state design of piled jacket structure, owing to severe fluctuation in structural stress caused by a “tensed-released-re-tensed” stress-transfer tendency.

本文设计了一个综合动态分析模型，用于研究桩式夹套海上风电机组的空气动力学、伺服动力学、流体力学和土壤-结构相互作用之间的耦合。FAST 验证了 AeroDyn 和 ServoDyn 模块的性能，展示了它们在确定性和随机环境条件下的适用性。随后研究了 OWT 的动态响应，特别是 t-z 建模、应力传递机制和结构疲劳损伤。由于忽略了加载历史效应，根据 API 准则中的非线性弹性 t-z 曲线计算出的夹套整体变形被利用边界表面塑性框架制定的 t-z 曲线所压倒。伴随着 "压缩-释放-压缩 "的应力传递过程，下风管将承受高应力水平，因此有必要在桩套结构的极限状态设计中给予更多关注。相反，上风管由于 "张紧-释放-张紧 "的应力传递趋势导致结构应力剧烈波动，似乎对桩套结构的疲劳极限状态设计更具决定性。

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引用次数: 0

Hydrodynamic optimization and performance verification of fairings for round-ended cofferdams using dam-break wave experiments and numerical simulations 利用溃坝波实验和数值模拟对圆端围堰的整流罩进行水动力优化和性能验证

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-04 DOI: 10.1016/j.apor.2024.104247

Guoji Xu , Zexing Jiang , Jiaguo Zhou , Lele Xu , Zhengbowen Liao , Yong Xu

Round-ended cofferdams are crucial for large-scale marine projects but are vulnerable to the complex marine environment, including waves, tides, and storms. Enhancing the hydrodynamic performance of these cofferdams is essential for improving safety and efficiency in marine construction. This study introduces a novel fairing design aimed at reducing water flow resistance during the quasi-stable stage of a tsunami. The flow field is analyzed using computational fluid dynamics (CFD) simulations, and an adaptive surrogate model is employed to optimize the parameterized fairing shape. The results demonstrate that the optimized shape significantly suppresses vortex shedding, leading to a 16.59 % reduction in the drag coefficient and a 44.3 % reduction in the lift coefficient under flow conditions. Experimental and numerical simulations of dam-break waves are conducted for two designs, R1 and R0. By comparing their flow field and force characteristics, it is found that R1 effectively separates waves during the impulse stage, reduces wave climb height, and decreases impact loads. In the quasi-stable stage, R1 mitigates the blockage effect, reducing the liquid level difference between the front and back, and thus lowering flow forces. Experimental data further reveals that when the downstream is a dry riverbed, R1′s load reduction is particularly notable, with maximum reductions of 45.62 % in the impulse stage and 28.75 % in the quasi-stable stage. When the riverbed is wet, the maximum load reduction rates are 18.04 % and 8.72 %, respectively. Therefore, R1 not only reduces the resistance of round-end cofferdams under water currents but also under extreme wave forces, providing valuable insights for advancing ocean engineering design.

圆形围堰对大型海洋工程至关重要，但容易受到海浪、潮汐和风暴等复杂海洋环境的影响。增强这些围堰的水动力性能对于提高海洋施工的安全性和效率至关重要。本研究介绍了一种新型整流罩设计，旨在减少海啸准稳定阶段的水流阻力。利用计算流体动力学（CFD）模拟分析了流场，并采用自适应代用模型优化了参数化的整流罩形状。结果表明，优化后的整流罩形状能显著抑制涡流脱落，从而使流动条件下的阻力系数降低了 16.59%，升力系数降低了 44.3%。对 R1 和 R0 两种设计进行了溃坝波的实验和数值模拟。通过比较它们的流场和受力特性，发现 R1 在冲击阶段能有效地分离波浪，降低波浪爬升高度，减少冲击载荷。在准稳定阶段，R1 可减轻阻塞效应，减少前后液面差，从而降低流力。实验数据进一步表明，当下游为干燥河床时，R1 的减载效果尤为显著，在冲击阶段最大减幅为 45.62%，在准稳定阶段最大减幅为 28.75%。当河床潮湿时，最大荷载降低率分别为 18.04 % 和 8.72 %。因此，R1 不仅能减小圆端围堰在水流作用下的阻力，还能减小其在极端波浪力作用下的阻力，为推进海洋工程设计提供了宝贵的启示。

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引用次数: 0

Study of the dynamic response of an offshore continuous beam bridge under nonlinear wave and scour 非线性波浪和冲刷下离岸连续梁桥的动态响应研究

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research

Pub Date : 2024-10-04 DOI: 10.1016/j.apor.2024.104245

Xuan Guo , ZheYu Zhang , PiGuang Wang

The study highlights the critical factors and findings regarding bridge damage susceptibility during typhoons and hurricanes, primarily due to extreme waves, scour, and storm surges. While existing research has extensively studied bridges' responses to either extreme waves or scour individually, their combined effects have not been sufficiently explored. Experiments were conducted on a scaled two-span bridge to examine its behavior under simultaneous wave and scour conditions. Results from these experiments indicate that as scour depth increases, there is a corresponding escalation in displacement of the bridge pier, acceleration of the bearing platform, and strain along the pile foundation. To further investigate these dynamics, fluid-structure interaction analysis was employed, revealing significant insights. Notably, the study found that wave height exerts a substantial influence on wave load. For instance, at a wave height of 6 m, the average peak horizontal wave load on bridge piers was 2.48 times higher than at 3 m wave height. Moreover, local scour was identified as a critical factor reducing the bearing capacity of pile foundations, thereby significantly impacting the bridge's dynamic response to nonlinear waves. Under identical wave conditions, varying scour depths (3 m, 6 m, 9 m, and 12 m) resulted in increases in peak lateral displacements at the pier top compared to non-scouring conditions. The study concludes by emphasizing the increasing risk posed to pile foundations with deeper scour depths, particularly under stronger wave conditions. Consequently, there is a crucial need to enhance the resilience of offshore bridges against these dual hazards through advanced design and protective measures.

该研究强调了台风和飓风期间桥梁易受损坏的关键因素和发现，主要是由于极端波浪、冲刷和风暴潮造成的。虽然现有研究已广泛研究了桥梁对极端波浪或冲刷的单独响应，但对它们的综合影响还没有进行充分的探讨。我们在一座按比例缩放的两跨桥梁上进行了实验，以研究其在波浪和冲刷同时作用条件下的行为。实验结果表明，随着冲刷深度的增加，桥墩的位移、承台的加速度和桩基的应变也会相应增加。为了进一步研究这些动态变化，采用了流体-结构相互作用分析，并获得了重要启示。值得注意的是，研究发现波浪高度对波浪荷载有很大影响。例如，波高 6 米时，桥墩上的平均峰值水平波载荷是波高 3 米时的 2.48 倍。此外，局部冲刷被认为是降低桩基承载力的关键因素，从而极大地影响了桥梁对非线性波浪的动态响应。在相同的波浪条件下，不同的冲刷深度（3 米、6 米、9 米和 12 米）导致桥墩顶部的峰值侧向位移比无冲刷条件下有所增加。研究最后强调，随着冲刷深度的加深，尤其是在较强的波浪条件下，桩基所面临的风险会越来越大。因此，亟需通过先进的设计和保护措施来增强近海桥梁对这些双重危害的抵御能力。

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引用次数: 0