Marine Structures最新文献_第5页

Further development of offshore floating solar and its design requirements 海上浮动太阳能的进一步发展及其设计要求

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-23 DOI: 10.1016/j.marstruc.2024.103730

Arefeh Emami , Madjid Karimirad

Floating solar platform (FSP) installations in coastal waters provide a significant energy source for reaching the goal of global net-zero emissions by 2050. These alternative and beautiful green energy installations offer substantial renewable energy generation potential. However, developing robust design solutions is crucial for fully exploiting such potential in offshore environments. This review explores the fundamental requirements for designing FSPs in offshore settings from an engineering perspective. A primary focus is on the hydrodynamic and aerodynamic characteristics, stochastic behaviours, and nonlinear phenomena associated with these structures. Key design parameters such as geometry, modularity, connectivity, and mooring systems are subjected to comprehensive analysis. The interaction between wind, waves, and FSP dynamics is examined, with particular attention to wind-wave coupling. Additionally, complex nonlinear wave phenomena, such as slamming, overtopping, green water, sloshing, ringing, and springing, are thoroughly discussed. The review also highlights the application of previous fluid-structure interaction research in FSP design and development, addressing challenges and variations encountered in this field. Furthermore, the role of data-driven approaches, particularly machine learning, in enhancing the design and development of FSPs is illustrated. This comprehensive examination provides a more delicate understanding of the design challenges and requirements inherent in this rapidly evolving technological field.

沿海水域的浮动太阳能平台（FSP）装置为实现到 2050 年全球净零排放的目标提供了重要的能源来源。这些美观的替代性绿色能源装置具有巨大的可再生能源发电潜力。然而，要想在近海环境中充分挖掘这些潜力，开发稳健的设计方案至关重要。本综述从工程学角度探讨了在近海环境中设计可再生能源发电站的基本要求。主要重点是与这些结构相关的流体动力和空气动力特性、随机行为和非线性现象。对几何形状、模块化、连接性和系泊系统等关键设计参数进行了全面分析。研究了风、波浪和 FSP 动力学之间的相互作用，尤其关注风-波耦合。此外，还深入讨论了复杂的非线性波浪现象，如撞击、倾覆、绿水、荡漾、振铃和弹跳。该综述还重点介绍了以往流固耦合研究在 FSP 设计和开发中的应用，探讨了该领域遇到的挑战和变化。此外，还说明了数据驱动方法，特别是机器学习，在加强 FSP 设计和开发中的作用。这项全面的研究使人们对这一快速发展的技术领域所固有的设计挑战和要求有了更细致的了解。

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引用次数: 0

Dynamic analysis in polar exploration: Fluid-structure interaction modeling of projectile colliding with floating ice during water entry 极地探索中的动态分析：射弹入水时与浮冰碰撞的流体-结构相互作用建模

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-21 DOI: 10.1016/j.marstruc.2024.103729

Xinyu Hu, Yingjie Wei, Cong Wang

In polar resource exploration, the interaction between polar detectors and floating ice, as well as their water entry mechanisms, are crucial for ensuring effective detector operation and data collection. This study developed a fluid-structure interaction (FSI) model to simulate the water entry of the projectile in a multidegree motion state upon collision with the floating ice, and the numerical method was validated through experiments. This study analyzes the mechanisms of cavity evolution and the laws of cavity pinch-off. This analysis further explores the motion states and dynamic characteristics under the interaction between the projectile and the floating ice. Additionally, this study also considers the influence of structural parameters of the floating ice, including thickness (L_t), width (L_w), and collision position (S_d), on the water entry process. The study reveals that increasing the submergence depth of the floating ice enhances the stability between the floating ice and water, and can mitigate flow separation phenomena generated by passive motion under inertial effects. Variations in the floating ice thickness significantly affect the cavity evolution and the projectile's underwater motion state. Conversely, variations in the floating ice width notably affect the liquid level disturbances, the development of splash crowns, and the evolution of passive water entry cavities. In specific multidegree motion states, various collision positions do not alter the evolution form of water entry cavities, yet the variation in collision positions notably affects floating ice displacement. As the collision position shifts from the center to the side edge of the floating ice, both the hydrodynamic forces on the projectile and the stress on the floating ice gradually decrease, with the decrease in hydrodynamic forces being the most significant, reaching up to 58%. This study is important for enhancing multi-body fluid-structure interaction algorithms and advancing polar exploration engineering development.

在极地资源勘探中，极地探测器与浮冰之间的相互作用及其入水机制对于确保探测器的有效运行和数据采集至关重要。本研究建立了流固耦合（FSI）模型，模拟射弹与浮冰碰撞后的多度运动状态下的入水过程，并通过实验对数值方法进行了验证。本研究分析了空腔演化机理和空腔挤压规律。该分析进一步探讨了弹丸与浮冰相互作用下的运动状态和动态特性。此外，本研究还考虑了浮冰的结构参数，包括厚度（Lt）、宽度（Lw）和碰撞位置（Sd）对入水过程的影响。研究表明，增加浮冰的浸没深度可增强浮冰与水之间的稳定性，并可减轻惯性作用下被动运动产生的水流分离现象。浮冰厚度的变化会显著影响空腔的演变和弹丸的水下运动状态。相反，浮冰宽度的变化会明显影响液面扰动、飞溅冠的形成以及被动进水空腔的演变。在特定的多度运动状态下，不同的碰撞位置不会改变进水腔的演变形式，但碰撞位置的变化会显著影响浮冰的位移。当碰撞位置从浮冰中心向侧边移动时，弹丸所受的流体动力和浮冰所受的应力都逐渐减小，其中流体动力的减小最为显著，最大可达 58%。这项研究对于改进多体流固耦合算法、推动极地探测工程发展具有重要意义。

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引用次数: 0

Dynamic analysis of breaking wave impact on a floating offshore wind turbine via smoothed particle hydrodynamics 通过平滑粒子流体力学分析破浪对漂浮式海上风力涡轮机的动态影响

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-21 DOI: 10.1016/j.marstruc.2024.103731

Shengzhe Wang , Wei-Liang Chuang

This work leverages Lagrangian smoothed particle hydrodynamics (SPH) to explore the structural and hydrodynamic response of floating offshore wind turbines (FOWT) subject to impulsive breaking waves. The SPH formulation was first validated against breaking wave impact on a model tension leg platform (TLP) which demonstrated good consistency with experimental results. Following validation, wave focusing was utilized to generate both breaking and nonbreaking extreme waves impacting a moored semi-submersible FOWT at full scale. Impulsive forces and accelerations resulting from the plunging breaker were observed to exceed that of nonbreaking waves by up to 70 % and 230 %, respectively, and were highly sensitive to the wave impingement location relative to the FOWT. However, wave breaking did not appear to significantly influence rigid body motions and yielded lower mooring tensions than its nonbreaking counterpart due to the short duration of impact. This work ultimately demonstrates the applicability of SPH for the simulation of breaking wave interactions with floating bodies and provides further impetus towards the study of FOWTs under such conditions.

这项研究利用拉格朗日平滑粒子流体力学（SPH）来探索浮式海上风力涡轮机（FOWT）在冲击破浪作用下的结构和流体力学响应。首先根据破浪对模型张力腿平台（TLP）的影响对 SPH 公式进行了验证，结果表明与实验结果十分吻合。验证结束后，利用波聚焦生成了冲击全尺度系泊半潜式 FOWT 的破浪和非破浪极端波浪。据观察，由猛烈破浪产生的冲击力和加速度分别超过非破浪的 70% 和 230%，并且对相对于 FOWT 的波浪冲击位置高度敏感。不过，由于冲击持续时间较短，破浪似乎不会对刚体运动产生重大影响，而且与非破浪相比，破浪产生的系泊张力较低。这项工作最终证明了 SPH 在模拟破浪与浮体相互作用方面的适用性，并进一步推动了在这种条件下对 FOWT 的研究。

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引用次数: 0

Experimental and numerical investigation on the influence of bilge keel shape on roll damping 舭龙骨形状对滚动阻尼影响的实验和数值研究

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-20 DOI: 10.1016/j.marstruc.2024.103725

Hasan Islam Copuroglu , Emre Pesman , Toru Katayama

Excessive roll amplitudes due to roll motion are undesirable in marine ships. Consequently, it is imperative to conduct a detailed analysis of roll motion and the associated roll damping characteristics. This study experimentally and numerically investigates the roll damping characteristics of bilge keels with various geometric shapes on a ship model under different roll amplitudes. By comparing the non-dimensional roll damping coefficients obtained from experiments and numerical analyses, it is observed that bilge keels with geometries differing from the conventional plate shape exhibit distinct roll damping coefficients. Specifically, bilge keels with sharper tip ends demonstrate higher roll damping coefficients. Based on these findings, it is recommended that the corners and tip end of bilge keels be sharpened to enhance the roll damping coefficient.

滚动运动造成的过大滚动幅度在船舶中是不可取的。因此，必须对滚动运动和相关的滚动阻尼特性进行详细分析。本研究通过实验和数值方法研究了不同滚动振幅下具有不同几何形状的船底龙骨在船舶模型上的滚动阻尼特性。通过比较实验和数值分析获得的非尺寸滚动阻尼系数，可以观察到不同于传统板状几何形状的舱底龙骨表现出不同的滚动阻尼系数。具体来说，龙骨顶端更尖锐的龙骨表现出更高的滚动阻尼系数。基于这些发现，建议对船底龙骨的边角和顶端进行锐化处理，以提高滚动阻尼系数。

引用次数: 0

Design of a quick-connection device for installing pre-assembled offshore wind turbines 设计用于安装预组装海上风力涡轮机的快速连接装置

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-16 DOI: 10.1016/j.marstruc.2024.103720

Behfar Ataei , Zhengru Ren , Karl Henning Halse

Higher wind velocities and lower wind shear are two motivations driving the development of floating offshore wind turbines (OWTs). However, such designs suffer from high expenses and complicated installation scenarios. Installation of offshore wind turbines is challenging due to the unpredictable nature of the environment and the technical complexities, especially at offshore sites. Mating of OWT on top of the pre-installed substructure is one of the critical stages of the installation operation. Grouted, welded, and bolted connections are utilized conventionally, but all have shortcomings. Welded and grouted connections suffer from fatigue forces, while a bolted connection requires minimal installation tolerances and sensitivity to impact forces. The design of a quick connection device (QCD) is expected to reduce the installation time, expand the operational weather window, and overcome the limitations of the earlier connection devices.

The QCD described here comprises conic cross-sections, circular plates, and stiffeners connected to the floating substructure and OWT. This research uses a global model to estimate the relative velocities and displacements between the OWT and spar buoy. Furthermore, a local finite element model is developed to assess the influence of the impact forces and the design of the connection device. Implementing the hydrostatic stiffness of the floating spar within the impact simulations improved the simulation fidelity and reduced the impact damage. Different impact scenarios are performed, and the sensitivity of impact damage concerning the distribution of impact initiation points is assessed. Furthermore, an active control mechanism is used to reduce the relative motions between the installation vessel and the floating substructure. It is concluded that utilizing the anti-swing active control system minimizes the impact velocity and impact damage. This research can be extended by optimizing the design of the quick connection device.

更高的风速和更低的风切变是推动漂浮式海上风力涡轮机（OWTs）发展的两大动力。然而，这种设计存在成本高、安装复杂的问题。由于环境的不可预测性和技术的复杂性，海上风力涡轮机的安装具有挑战性，尤其是在近海地点。将海上风力涡轮机安装到预安装的下部结构顶部是安装操作的关键阶段之一。传统的连接方式有灌浆连接、焊接连接和螺栓连接，但所有连接方式都存在缺陷。焊接和灌浆连接会受到疲劳力的影响，而螺栓连接则要求最小的安装公差和对冲击力的敏感性。快速连接装置（QCD）的设计有望缩短安装时间，扩大作业气象窗口，并克服早期连接装置的局限性。此处描述的快速连接装置由圆锥截面、圆板和与浮式下部结构和 OWT 连接的加强筋组成。本研究使用全局模型来估算 OWT 和 spar 浮标之间的相对速度和位移。此外，还开发了一个局部有限元模型，以评估冲击力和连接装置设计的影响。在撞击模拟中采用浮标的静水刚度提高了模拟的逼真度并减少了撞击破坏。对不同的撞击情景进行了模拟，并评估了撞击破坏对撞击起始点分布的敏感性。此外，还采用了一种主动控制机制来减少安装船和浮动下部结构之间的相对运动。结论是，利用防摆动主动控制系统可将撞击速度和撞击损害降至最低。这项研究可通过优化快速连接装置的设计加以扩展。

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引用次数: 0

An ULS reliability-based design method for mooring lines using an efficient full long-term approach 基于 ULS 可靠性的系泊缆线设计方法，采用高效的全长期方法

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-14 DOI: 10.1016/j.marstruc.2024.103718

Marina Leivas Simão , Luis Volnei Sudati Sagrilo , Paulo Maurício Videiro , Mauro Costa de Oliveira

In the long-term scenario, the environmental actions to which floating offshore structures are subjected to, such as waves, wind and current, are non-stationary stochastic processes. However, this long-term behavior is usually modeled as a series of short-term stationary conditions. In a full long-term analysis approach, an estimate of the N-year response can be obtained through a multi-dimensional integration over expected short-term environmental conditions. An innovative and more efficient long-term integration approach based on the Importance Sampling Monte Carlo Simulation (ISMCS) method is presented, where the uniform distribution over an environmental contour is used as the sampling function. In parallel, a multi-dimensional joint environmental model that statistically describes all relevant environmental parameters is employed, contemplating linear and directional variables, and thoroughly accounting for the occurrences of wind waves and swell. The methodology is applied to two FPSOs systems installed in Brazilian ultradeep waters. Ultimately, a design-oriented procedure based on the developed methodologies is provided, using an Ultimate Limit State (ULS) reliability-based design with calibrated safety factors in an LRFD (Load and Resistance Factors Design) format. It is shown that the developed procedures can be powerful tools to account for the simultaneous occurrence of wind sea and swell waves in offshore system response evaluations required in the design and life extension analyses.

在长期情况下，海上浮动结构所受到的环境影响，如海浪、风和水流，都是非静态的随机过程。然而，这种长期行为通常被模拟为一系列短期静态条件。在完整的长期分析方法中，可以通过对预期的短期环境条件进行多维整合来获得 N 年响应的估计值。本文提出了一种基于重要度抽样蒙特卡洛模拟（ISMCS）方法的创新型、更高效的长期积分方法，即使用环境等值线上的均匀分布作为抽样函数。同时，还采用了一个多维联合环境模型，该模型可统计描述所有相关环境参数，考虑线性和方向变量，并全面考虑风浪和涌浪的发生。该方法适用于安装在巴西超深水域的两个 FPSO 系统。最后，在所开发方法的基础上提供了一个以设计为导向的程序，该程序采用基于极限状态（ULS）的可靠性设计，并以 LRFD（载荷和阻力系数设计）格式校准了安全系数。结果表明，所开发的程序是一种强大的工具，可以在设计和延寿分析所需的近海系统响应评估中考虑到同时出现的风浪和涌浪。

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引用次数: 0

A probability-based study on failure mechanism and quantitative risk analysis for buried offshore pipelines subjected to third-party impact loads, exploring the effects of spatial variability of soil strength 基于概率的研究，探讨土壤强度空间变化的影响，研究承受第三方冲击荷载的埋地海上管道的失效机理和定量风险分析

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-14 DOI: 10.1016/j.marstruc.2024.103719

Fengyuan Jiang , Sheng Dong , Carlos Guedes Soares

Burial is an effective approach to offshore pipeline protection for impact loads. However, few studies address the influences of inherent soil spatial variabilities on failure behaviour of soil covers and pipelines, causing deviations. Therefore, a random field-large deformation finite element analysis framework is developed to explore the failure mechanisms of buried pipelines in spatially varying soils. The failure mode of soil cover is conformed to a local mode, where the failure path is insensitive to soil variability. The failure mechanism of pipelines depends on the competition mechanism between soil strengths and pipe-soil interactions, based on which two typical failure modes are summarized. Soil variability not only aggravates the impact damage but also stimulates the diversity of structural responses. Correlations between probabilistic damage degrees and multiple influential factors are discussed. Further, inspired by the principle of energy dissipation, an integrated quantitative risk assessment model is derived to reveal the failure risk evolution, where uncertainties from soil variabilities and structure-related factors are considered. The latter shows a significant influence, which may pose an additional failure probability of over 50 %. Different safety design approaches are compared, and spatial failure probability surfaces are configured for burial depth determination.

埋设是保护近海管道免受冲击载荷的有效方法。然而，很少有研究涉及土壤固有的空间变化对土壤覆盖层和管道破坏行为的影响，从而导致偏差。因此，本文建立了一个随机场-大变形有限元分析框架，以探讨埋地管道在空间变化土壤中的破坏机制。土壤覆盖层的破坏模式符合局部模式，破坏路径对土壤变化不敏感。管道的破坏机制取决于土壤强度之间的竞争机制和管道与土壤之间的相互作用，在此基础上总结出两种典型的破坏模式。土壤的多变性不仅会加剧冲击破坏，还会刺激结构响应的多样性。讨论了概率破坏程度与多种影响因素之间的相关性。此外，在能量耗散原理的启发下，得出了一个综合定量风险评估模型，以揭示破坏风险的演变，其中考虑了土壤变异和结构相关因素的不确定性。后者具有重大影响，可能造成超过 50% 的额外失效概率。比较了不同的安全设计方法，并为确定埋深配置了空间失效概率曲面。

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引用次数: 0

Elastic mode expansion in smoothed particle hydrodynamics framework for hydroelasticity and validation with 3D hydroelastic wedge impact experiments 平滑粒子流体力学框架中的水弹性弹性模式扩展以及三维水弹性楔形冲击实验的验证

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-14 DOI: 10.1016/j.marstruc.2024.103721

Chaitanya Kesanapalli, HeonYong Kang

To perform an efficient hydroelastic simulation with violent free surface interactions, we extend δ+ SPH to elastic modes of a floating structure through GPU parallelization, which includes the correction of velocity divergence with the deformation and computation of the structure's strain. Free surface interaction is supplemented with a segmented particle shifting and tensile instability correction. We validate the developed hydroelastic simulation for experiments of elastic wedge impacts with aluminum and composite panels. Through comparative analysis with different deadrise angles and impact velocities, we find that the improved free surface interactions reduce early separation from the deforming panels, leading to better prediction of the wedge acceleration and reasonably well-matched profiles of the free surface and panel deformation. The marginal difference is attributable to the water passing through the gaps of the physical test model built in three dimensions, which is absent in the simulation setup. Comparing strain time series, measured at two locations on the elastic panels, through three sets of simulations in different dimensions of the simulation set-up and mode shapes, we see that three-dimensional simulation with correct mode shapes in three dimensions accurately predicts the strain time series at both locations as well as the wedge acceleration. The hydroelastic simulation through the modal expansion in GPU parallelization can be utilized to efficiently predict various hydroelastic phenomena with violent free surface interactions.

为了执行具有剧烈自由表面相互作用的高效流体弹性模拟，我们通过 GPU 并行化将 δ+ SPH 扩展到浮动结构的弹性模式，其中包括随变形和结构应变计算的速度发散修正。自由表面相互作用辅以分段粒子移动和拉伸不稳定性校正。我们在铝板和复合板的弹性楔形冲击实验中验证了所开发的流体弹性模拟。通过对不同倾角和撞击速度的对比分析，我们发现改进后的自由表面相互作用减少了与变形面板的早期分离，从而更好地预测了楔形加速度，并合理地匹配了自由表面和面板变形的轮廓。边际差异可归因于水通过三维物理测试模型的缝隙，而模拟设置中不存在这种情况。通过三组不同维度模拟设置和模态形状的模拟，比较在弹性面板两个位置测量到的应变时间序列，我们发现三维模拟和正确的三维模态形状可以准确预测两个位置的应变时间序列以及楔形加速度。通过 GPU 并行化中的模态扩展进行的水弹性模拟可用于有效预测各种具有剧烈自由表面相互作用的水弹性现象。

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引用次数: 0

Extreme nonlinear ship response estimations by active learning reliability method and dimensionality reduction for ocean wave 用主动学习可靠性方法和降维法估算海洋波浪的极端非线性船舶响应

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-12 DOI: 10.1016/j.marstruc.2024.103723

Tomoki Takami , Masaru Kitahara , Jørgen Juncher Jensen , Sadaoki Matsui

An efficient extreme ship response prediction approach in a given short-term sea state is devised in the paper. The present approach employs an active learning reliability method, named as the active learning Kriging + Markov Chain Monte Carlo (AK-MCMC), to predict the exceedance probability of extreme ship response. Apart from that, the Karhunen-Loève (KL) expansion of stochastic ocean wave is adopted to reduce the number of stochastic variables and to expedite the AK-MCMC computations. Weakly and strongly nonlinear vertical bending moments (VBMs) in a container ship, where the former only accounts for the nonlinearities in the hydrostatic and Froude-Krylov forces, while the latter also accounts for the nonlinearities in the radiation and diffraction forces together with slamming and hydroelastic effects, are studied to demonstrate the efficiency and accuracy of the present approach. The nonlinear strip theory is used for time domain VBM computations. Validation and comparison against the crude Monte Carlo Simulation (MCS) and the First Order Reliability Method (FORM) are made. The present approach demonstrates superior efficiency and accuracy compared to FORM. Moreover, methods for estimating the Mean-out-crossing rate of VBM based on reliability indices derived from the present approach are proposed and are validated against long-time numerical simulations.

本文设计了一种高效的短期海况下极端船舶响应预测方法。本方法采用了一种主动学习可靠性方法，即主动学习克里金+马尔可夫链蒙特卡洛（AK-MCMC），来预测极端船舶响应的超标概率。此外，还采用了随机海浪的卡尔胡宁-洛夫（KL）扩展，以减少随机变量的数量，加快 AK-MCMC 的计算速度。研究了集装箱船的弱非线性和强非线性垂直弯矩 (VBM)，前者只考虑了流体静力学和 Froude-Krylov 力的非线性，而后者还考虑了辐射力和衍射力的非线性以及撞击和水弹性效应，以证明本方法的效率和准确性。非线性条带理论用于时域 VBM 计算。与粗糙的蒙特卡罗模拟（MCS）和一阶可靠性方法（FORM）进行了验证和比较。与一阶可靠性方法相比，本方法显示出更高的效率和准确性。此外，根据本方法得出的可靠性指数，提出了估算 VBM 平均出叉率的方法，并通过长时间数值模拟进行了验证。

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引用次数: 0

Structural performance at the joint of precast pile-supported pier structure 预制桩支墩结构连接处的结构性能

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures

Pub Date : 2024-11-12 DOI: 10.1016/j.marstruc.2024.103722

Sang Kyu Cho , Tae Hoon Koo , Won Chul Cho

Recently, precast construction methods have been increasingly applied to pile-supported pier structures in coastal areas, offering simplified construction processes, shorter construction periods, and minimized environmental pollution. The use of precast members in offshore construction allows for prefabricated assembly, reducing the need for temporary installations and minimizing field casting work. However, pile-supported pier structures in coastal regions are subject to various marine loads, such as wave, berthing, wind forces and live load, along with uplifting forces due to sea-level rise, making it essential to verify the joints—typically the most vulnerable part of precast structures. This study conducts numerical analyses and experimental tests to evaluate the behavior of joints in newly developed precast structures and assess their structural safety. Results indicate that the failure mode of the structure initiates and progresses at the joint where the precast members connect to field-cast sections. Additionally, it was confirmed that failure originates at the weakest point in areas where precast girders, precast pile caps, and piles are interconnected. Nonetheless, the proposed structure demonstrated structural performance that significantly exceeded the design load.

近来，预制施工方法越来越多地应用于沿海地区的桩基支撑码头结构，从而简化了施工流程，缩短了施工周期，并最大限度地减少了环境污染。在海上施工中使用预制构件可以实现预制组装，减少对临时安装的需求，并最大限度地减少现场浇注工作。然而，沿海地区的桩支墩结构会受到各种海洋荷载的影响，如波浪、停泊、风力和活荷载，以及海平面上升导致的上浮力，因此必须对接缝进行验证--接缝通常是预制结构中最脆弱的部分。本研究通过数值分析和实验测试来评估新开发的预制结构中接缝的行为，并评估其结构安全性。结果表明，结构的失效模式始于预制构件与现场浇注部分连接的接缝处，并在该处发展。此外，在预制梁、预制桩帽和桩相互连接的区域，失效源于最薄弱点。尽管如此，拟建结构的结构性能大大超过了设计荷载。

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引用次数: 0