Engineering Failure Analysis最新文献_第9页

Forensic investigation of piston assembly–cylinder liner failure in a heavy-duty diesel engine of a vibratory roller: A case study 某重型柴油机振动压路机活塞总成-缸套失效的法医学研究

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-29 DOI: 10.1016/j.engfailanal.2025.110511

Ao Wei , Jiayu Hu , Ruirui Dai , Zhihao Deng , Junhao Dong , Zhibo Yang , Haotian Tao , Marco Alfano , Junfeng Yuan

Diesel engine failures have been extensively investigated. However, research specifically addressing failures of roller diesel engines operating under harsh and variable conditions remains limited. This study reports a case of piston assembly–cylinder liner failure in a heavy-duty roller diesel engine that recurred eight years after a major overhaul. The aim is to identify the root causes of failure to prevent engineering delays and economic losses. Unlike previous studies that focused on isolated components, this work conducts a comprehensive investigation covering the piston body, piston rings, piston skirt, connecting rod bearings, and cylinder liner. To elucidate the failure modes and mechanisms, multiple experimental analytical methods were employed, including metallographic examination, chemical analysis, visual inspection, and scanning electron microscopy. The results reveal that the failure was jointly driven by a triggering mechanism (insufficient maintenance), a dominant mechanism (abrasive and adhesive wear), and several secondary mechanisms including corrosive wear, cavitation erosion, and fatigue spalling. Finally, we have proposed targeted corrective actions and maintenance recommendations to prevent recurrence of such failures. The article should be of broad interest to the global engineering community, as early failure of construction machinery remains a critical concern.

柴油机故障已被广泛研究。然而，专门针对在恶劣和可变条件下运行的滚轮柴油机故障的研究仍然有限。本研究报告了一个重型滚轮柴油机活塞总成-缸套失效的案例，该故障在大修后8年再次发生。其目的是确定故障的根本原因，以防止工程延误和经济损失。与以往的研究不同，这项工作对活塞体、活塞环、活塞裙、连杆轴承和气缸套进行了全面的研究。采用金相检验、化学分析、目视检验和扫描电镜等多种实验分析方法阐明了其失效模式和机理。结果表明，该失效是由触发机制（维护不足）、主导机制（磨粒和黏着磨损）以及腐蚀磨损、空化侵蚀和疲劳剥落等次要机制共同驱动的。最后，我们提出了有针对性的纠正措施和维护建议，以防止此类故障的再次发生。这篇文章应该引起全球工程界的广泛兴趣，因为工程机械的早期故障仍然是一个关键问题。

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引用次数: 0

Experimental study on failure behaviors of cylindrical lithium-ion batteries under high-velocity impact loading 高速冲击载荷下圆柱形锂离子电池失效特性试验研究

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-29 DOI: 10.1016/j.engfailanal.2025.110514

Huixing Meng , Peikai Qu , Cheng Wang, Linshuang Zhao

Lithium-ion batteries are extensively utilized in civilian and military fields. However, their safety under extreme conditions (e.g., high-velocity impacts) remains to be further investigated. Cylindrical cells behave as the fundamental units in numerous electronic devices and energy-storage systems. This study investigates two types of cylindrical lithium-ion batteries (i.e., 18650 and 21700) and propels high-velocity projectiles into the batteries, thereby simulating extreme impact scenarios. We experimentally examine the failure behaviors of these batteries across the full state of charge (SOC) range, that is, from 0 to 100% at 10% intervals. Our results reveal that higher SOCs lead to more severe failure failures and significantly elevate the risk of thermal runaway (TR) following the battery penetration. Different battery types exhibit almost identical capacity threshold for thermal runaway. This study introduces the BiHill function model to simulate the temperature evolutions during the thermal runaway processes of high-SOC batteries. Additional experiments were conducted to investigate the effect of velocity on the thermal runaway threshold. Our results are expected to provide theoretical foundation for the safety protection of LIB in extreme environments.

锂离子电池广泛应用于民用和军事领域。然而，它们在极端条件下（如高速撞击）的安全性仍有待进一步研究。圆柱形电池是许多电子设备和能量存储系统的基本单元。本研究研究了两种圆柱形锂离子电池（即18650和21700），并将高速弹丸推进电池，从而模拟极端撞击场景。我们通过实验研究了这些电池在全荷电状态（SOC）范围内的失效行为，即以10%的间隔从0到100%。我们的研究结果表明，更高的soc会导致更严重的失效，并显著增加电池穿透后热失控（TR）的风险。不同类型的电池表现出几乎相同的热失控容量阈值。本文引入BiHill函数模型来模拟高荷电电池热失控过程中的温度演变。进一步的实验研究了速度对热失控阈值的影响。研究结果有望为锂离子电池在极端环境下的安全防护提供理论依据。

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引用次数: 0

Evaluating the role of printing orientation and infill strategy on 3D-printed PLA failure mechanisms 评估打印方向和填充策略对3d打印PLA失效机制的作用

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-29 DOI: 10.1016/j.engfailanal.2025.110487

Denis Linardi , Elisabetta Monaldo , Nadia Bahlouli , Fahmi Bedoui , Sonia Marfia

This study presents an in-depth experimental analysis of the mechanical behavior of 3D-printed polylactic acid (PLA) components, focusing on how printing parameters influence failure mechanisms. Various mechanical tests are performed, including tensile, compact/tension (c/t) and single edge notched bending (SENB) experiments. The specimens were printed in multiple orientations and with different filament alignment strategies, including unidirectional and alternating linear infill patterns. The role of perimeter walls is also evaluated in specific SENB tests. The results aim to elucidate the effects of print configurations on the mechanical response and failure mechanisms of 3D-printed PLA, with the ultimate goal of providing useful information for the numerical modeling of the mechanical behavior of 3D-printed components. The findings are also relevant for optimizing processing conditions and advancing the reliability of 3D-printed materials in engineering applications.

本研究对3d打印聚乳酸（PLA）部件的力学行为进行了深入的实验分析，重点研究了打印参数对失效机制的影响。进行了各种机械测试，包括拉伸，压实/张力（c/t）和单边缘缺口弯曲（SENB）实验。样品以多种方向和不同的灯丝排列策略打印，包括单向和交替的线性填充模式。在特定的SENB测试中也评估了周界墙的作用。研究结果旨在阐明打印配置对3d打印PLA力学响应和失效机制的影响，最终目的是为3d打印部件力学行为的数值模拟提供有用的信息。这些发现也与优化加工条件和提高3d打印材料在工程应用中的可靠性有关。

引用次数: 0

Failure analysis of a natural gas pipeline subjected to landslide in the Qinglong Section, China-Myanmar pipeline 中缅青龙段天然气管道滑坡破坏分析

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-28 DOI: 10.1016/j.engfailanal.2025.110509

Dong Huang , Zongchuan Zhao , Ke Jiang , Dongyuan Wang

Mountain pipeline engineering is a critical indicator of a nation’s energy infrastructure capabilities.This type of project must integrate multiple requirements, such as energy supply, engineering technology, environmental protection, and safety management, under complex geological and climatic conditions, forming a highly complex systematic engineering endeavor.Given the frequent occurrence of geological hazards in mountainous regions, pipelines are particularly vulnerable to landslides. Thus, effective disaster prevention and control measures are essential to minimize potential damage.This study investigates two landslide-induced pipeline failure events that occurred in 2017 and 2018 along the China–Myanmar natural gas pipeline (Qinglong Section, Guizhou Province). By combining geological and environmental conditions with on − site accident investigation data, and based on the finite element solid contact model, the force and deformation characteristics of the natural gas pipeline under the action of landslides are analyzed to determine the causes of the accidents. The results indicate that the deflection of the pipeline follows an approximately normal distribution when subjected to landslide forces. Stress concentrations are most pronounced in the central and boundary regions of the pipeline, making these areas highly susceptible to failure. An accumulation of soil atop the slope, where the pipeline is placed, can cause significant axial tensile stress in the pipeline. This condition can lead to brittle crack damage, especially at the pipe body or girth weld defects, resulting in gas leakage and explosion. Therefore, in subsequent maintenance operations, it is essential to prevent significant external disturbances, particularly the accumulation of large soil masses on slopes above the pipeline, to ensure long-term operational safety.

山地管道工程是衡量一个国家能源基础设施能力的重要指标。这类工程必须在复杂的地质和气候条件下，综合能源供应、工程技术、环境保护、安全管理等多方面要求，形成高度复杂的系统工程。山区地质灾害频发，管道特别容易发生滑坡。因此，有效的灾害预防和控制措施对于尽量减少潜在损失至关重要。本研究调查了2017年和2018年发生在中缅天然气管道（贵州青龙段）的两次滑坡管道故障事件。结合地质环境条件和现场事故调查资料，基于有限元固体接触模型，分析了滑坡作用下天然气管道的受力和变形特征，确定了事故发生的原因。结果表明：在滑坡力作用下，管道挠度近似服从正态分布；应力集中在管道的中心和边界区域最为明显，使这些区域极易发生破坏。管道所在的斜坡上的土壤堆积会在管道中引起显著的轴向拉应力。这种情况会导致脆性裂纹损伤，特别是在管体或环焊缝缺陷处，造成气体泄漏和爆炸。因此，在后续的维护作业中，必须防止明显的外部干扰，特别是防止管道上方斜坡上大量土体的堆积，以确保长期的运行安全。

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引用次数: 0

Research on the damage detection of hoisting wire ropes based on the dual parameters of opening angle and depth 基于开口角度和深度双参数的提升钢丝绳损伤检测研究

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-28 DOI: 10.1016/j.engfailanal.2025.110505

Yimin Wei , Xiaolong Sun , Yongji Li , Jun Pan , Li Wang

During the operation of lifting equipment, steel wire ropes are highly susceptible to developing broken wire notches as a result of enduring alternating loads and experiencing frictional wear. Conventional magnetic flux leakage (MFL) detection methods predominantly utilize the notch depth as the sole evaluation criterion. However, this approach struggles to precisely represent the actual service condition of the steel wire ropes. This paper proposes a damage detection method based on the dual parameters of the “opening angle” and “depth” of the notch. By introducing the magneto-mechanical coupling relationship, this study analyses the influence of the opening angle on the stress concentration of the notch and the distribution of the magnetic leakage field. A finite element simulation model is established to unveil the quantitative relationship between the opening angle and the characteristics of the magnetic leakage signal such as peak value and full width at half maximum (FWHM). Moreover, experimental verification is conducted to validate the findings. The results show that the detection accuracy rates of the method for the opening angle and notch depth reach 96.9% and 96.1%, respectively. The proposed method breaks through the limitation of the single criterion of traditional methods effectively, providing a more comprehensive criterion for improving the damage detection and life prediction of steel wire ropes.

在起重设备运行过程中，由于承受交变载荷和摩擦磨损，钢丝绳极易产生断线缺口。传统的漏磁检测方法主要以缺口深度作为唯一的评价标准。然而，这种方法很难准确地表示钢丝绳的实际使用状况。本文提出了一种基于缺口“开口角度”和“深度”双重参数的损伤检测方法。通过引入磁力耦合关系，分析了开孔角度对缺口应力集中和漏磁场分布的影响。建立了有限元仿真模型，揭示了打开角与漏磁信号的峰值、半峰全宽等特性之间的定量关系。并对研究结果进行了实验验证。结果表明，该方法对开口角和缺口深度的检测准确率分别达到96.9%和96.1%。该方法有效地突破了传统方法判据单一的局限，为提高钢丝绳的损伤检测和寿命预测提供了更为全面的判据。

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引用次数: 0

Wear study of eccentric roll crusher liner in mineral crushing process 矿物破碎过程中偏心辊破碎机衬套磨损研究

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-28 DOI: 10.1016/j.engfailanal.2025.110510

Shuwei Wu , Shuai Wang , Zhengbin Liu , Jianbo Guo , Yiwei Mao , Long Ye , Gang Liu , Peng Shi , Wei Guan , Dayi Zhang , Xuan Wang , Qingxue Huang

This work presents the first systematic investigation of the surface wear behaviour of eccentric roll crusher (ERC) liners used in iron ore operations. The study integrates macro-scale simulations with micro-scale characterization. At the macro scale, the iron ore breakage process was simulated using a coupled discrete element method (DEM)–multibody dynamics (MBD) framework, with particular attention to the development of liner wear patterns. To address the challenge of localizing wear, we propose a new RGB-based colour-mapping approach that enables quantitative and spatially resolved visualization of wear. Recognizing the limitations of the default mesh configuration in commercial software, we refined the mesh design to provide a clearer representation of column-wise wear distribution. The influence of mesh size on wear prediction was also evaluated. The results show that while mesh size has little effect on the overall magnitude of wear, it does influence the representation of localized wear features. An overly refined mesh can lead to localized overprediction of wear, whereas an excessively coarse mesh may mask subtle but important distribution features. Furthermore, DEM–MBD simulations were performed to assess the effect of roll reversal on liner wear, showing that reversing the roll rotation effectively mitigates wear severity. At the microscopic scale, scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) were employed to examine the worn surfaces. The results indicate that micro-cutting, micro-plowing, and micro-cracking dominate the material removal and transfer processes and are also responsible for large-scale spalling of the liner substrate. This behavior stems from the coupled action of impact and abrasive wear, ultimately leading to contact-fatigue-driven deterioration—a characteristic composite wear mode.

这项工作提出了偏心辊破碎机（ERC）衬垫在铁矿石操作中使用的表面磨损行为的第一个系统的调查。该研究将宏观尺度模拟与微观尺度表征相结合。在宏观尺度上，采用离散元法(DEM) -多体动力学（MBD）耦合框架对铁矿破碎过程进行了模拟，特别关注了衬里磨损模式的发展。为了解决局部磨损的挑战，我们提出了一种新的基于rgb的颜色映射方法，可以实现磨损的定量和空间分辨可视化。认识到商业软件中默认网格配置的局限性，我们改进了网格设计，以提供更清晰的列式磨损分布表示。并对啮合尺寸对磨损预测的影响进行了评价。结果表明，虽然网格尺寸对整体磨损程度影响不大，但它确实影响局部磨损特征的表示。过于精细的网格可能导致局部磨损的过度预测，而过于粗糙的网格可能掩盖微妙但重要的分布特征。此外，通过DEM-MBD模拟来评估滚转对衬套磨损的影响，结果表明，滚转可有效减轻磨损严重程度。在微观尺度上，采用扫描电子显微镜（SEM）和能谱仪（EDS）对磨损表面进行了检测。结果表明，微切削、微犁削和微开裂在材料去除和转移过程中起主导作用，也是衬里衬底大面积剥落的原因。这种行为源于冲击和磨粒磨损的耦合作用，最终导致接触疲劳驱动的磨损——一种典型的复合磨损模式。

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引用次数: 0

Tensile strength and damage patterns of bolted interference-fit joints in composite open-hole laminates based on acoustic emission monitoring 基于声发射监测的复合材料开孔层合板螺栓干涉配合接头拉伸强度及损伤模式

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-27 DOI: 10.1016/j.engfailanal.2025.110508

Tongyu Wu, Yonggang Kang, Shuaijia Kou, Zhipu Tan, Zihao Wang, Guangyu Zhao, Bokuan Fan

Composite bolted interference-fit joint can effectively enhance structural strength. However, damage introduced during the interference-fit installation significantly limits the broader application of this technique. To address this issue, this study systematically investigated the tensile strength and damage evolution of carbon fiber reinforced polymer (CFRP) laminates under varying interference-fit sizes, by integrating acoustic emission (AE) monitoring with machine learning algorithms. The study aimed to reveal the intrinsic correlation between AE signals collected during the interference-fit installation and bearing process. It also clarified how different interference-fit sizes affect the tensile strength and damage resistance of CFRP laminates. The results showed that for bolted interference-fit joints in composite open-hole laminates, the interference-fit size has a negligible effect on their tensile strength. And, residual stresses around the holes, induced by an 1.2% interference-fit size effectively suppressed delamination initiation during bearing, delays the onset of multiple damage patterns.

复合螺栓过盈配合接头能有效提高结构强度。然而，在干涉配合安装过程中引入的损坏严重限制了该技术的广泛应用。为了解决这一问题，本研究通过将声发射（AE）监测与机器学习算法相结合，系统地研究了碳纤维增强聚合物（CFRP）层叠板在不同干涉配合尺寸下的拉伸强度和损伤演变。该研究旨在揭示干涉配合安装与轴承过程中采集的声发射信号之间的内在相关性。阐明了不同过盈配合尺寸对复合材料抗拉强度和抗损伤性能的影响。结果表明：对于复合材料开孔层压板的螺栓过盈配合接头，过盈配合尺寸对其抗拉强度的影响可以忽略不计；此外，由1.2%的干涉配合尺寸引起的孔周围残余应力有效地抑制了轴承过程中分层的发生，延缓了多种损伤模式的发生。

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引用次数: 0

Effectiveness of SWRCM composite strips for masonry walls with openings under in-plane cyclic loading: An experimental study 面内循环荷载作用下SWRCM复合条对开孔砌体墙体的有效性试验研究

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-27 DOI: 10.1016/j.engfailanal.2025.110507

Dattatreya Tripathy , Vaibhav Singhal

Nine half-scale unreinforced masonry (URM) walls were subjected to quasi-static cyclic lateral loading to examine failure and the contribution of steel wire-reinforced cementitious composite (SWRCM) strips. The test matrix included four unstrengthened reference specimens—one solid wall and three with different opening configurations—and five walls retrofitted using SWRCM. Among the strengthened series, one solid wall was fully strengthened on both faces, while the others were retrofitted with strategically placed vertical and horizontal SWRCM strips. In the unstrengthened group, damage was concentrated around openings, where stress localization led to progressive cracking and, especially in walls with door-openings, complete separation of a masonry pier was noticed along with a strength reduction exceeding 25%. In contrast, the retrofitted walls exhibited delayed crack development, uniform damage distribution, and substantially improved seismic performance. Strengthened specimens displayed marked improvements: lateral strength and energy dissipation increased by factors of 2.0–2.6 and 13.7–23.3, respectively. Most importantly, the walls with discrete SWRCM strips performed comparably to the fully jacketed wall, highlighting the effectiveness of the strip-based approach in limiting brittle failures, reducing stiffness degradation, and controlling deformation around openings. Strain gauge measurements further indicated that existing design strain limits are adequate for solid walls and those with small openings, but may require revision when applied to walls with larger openings, where failure patterns are more severe.

采用准静力循环横向荷载对9个半尺度无加筋砌体（URM）墙体进行了破坏试验，考察了钢丝增强胶凝复合材料（SWRCM）对墙体破坏的贡献。试验基质包括4个未加固的参考试件（1个实体墙和3个不同开口构型的参考试件）和5个采用SWRCM加固的参考试件。在加固系列中，一个实体墙的两面都得到了充分的加固，而其他实体墙则通过策略性地放置垂直和水平SWRCM条进行了改造。在未加固组中，损伤集中在开口周围，应力局部化导致逐渐开裂，特别是在有开口的墙壁中，砌体墩完全分离，强度降低超过25%。相比之下，改造后的墙体裂缝发展延迟，损伤分布均匀，抗震性能大大提高。加固后的试件表现出明显的改善，侧向强度和能量耗散分别提高了2.0 ~ 2.6倍和13.7 ~ 23.3倍。最重要的是，具有离散SWRCM条的壁面的性能与完全夹套的壁面相当，突出了基于条的方法在限制脆性破坏，减少刚度退化和控制开口周围变形方面的有效性。应变计的测量进一步表明，现有的设计应变极限适用于实体墙和那些有小开口的墙，但当应用于有大开口的墙时，可能需要修改，因为那里的破坏模式更严重。

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引用次数: 0

Analysis of the seizure failure mechanism in threaded fasteners and experimental investigation 螺纹紧固件失效机理分析及实验研究

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-26 DOI: 10.1016/j.engfailanal.2025.110470

Ying Li , He Li , Xiangmin Dong , Zhifeng Liu , Lide Ma , Tengfei Bai

Thread seizure is a common mechanical failure mode that challenges product assembly reliability and increases maintenance costs. However, the underlying mechanism of seizure failure in threaded fasteners and the criteria for its identification require further investigation. This study investigates the damage process on the thread engagement surfaces and establishes a seizure failure criterion for threaded connections based on damage mechanics theory. To verify the model’s accuracy and universality, experiments were conducted to analyze the influence of material, speed, and torque on the seizure failure of threaded connections. Scanning electron microscopy (SEM) observations revealed that the seizure failure process can be divided into three stages: crack initiation on the engagement surfaces, material detachment, and debris accumulation. Building upon this, simulations were performed to analyze the influence mechanisms of fastener material, thread surface friction coefficient, bearing surface friction coefficient, and hole diameter ratio on thread seizure. The results indicate that fasteners made of titanium alloy (TC4) are more susceptible to seizure, and the thread surface friction coefficient contributes 60.7%–73.4% to the failure process in both material types. By elucidating the seizure failure mechanism in threaded connections, this study provides theoretical support for research into anti-seizure methods.

螺纹卡住是一种常见的机械故障模式，它挑战了产品装配的可靠性并增加了维护成本。然而，螺纹紧固件卡扣失效的潜在机制及其识别标准需要进一步研究。基于损伤力学理论，研究了螺纹连接件接触面的损伤过程，建立了螺纹连接件的失效准则。为了验证模型的准确性和通用性，通过实验分析了材料、转速和转矩对螺纹连接件卡扣失效的影响。扫描电镜（SEM）观察表明，断裂过程可分为接合面裂纹萌生、材料剥离和碎屑堆积三个阶段。在此基础上，通过仿真分析了紧固件材料、螺纹表面摩擦系数、轴承表面摩擦系数和孔径比对螺纹卡扣的影响机理。结果表明：钛合金（TC4）紧固件更易发生卡扣，螺纹表面摩擦系数对两种材料紧固件失效过程的贡献率为60.7% ~ 73.4%；本研究通过阐明螺纹连接中止动失效机理，为抗止动方法的研究提供理论支持。

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引用次数: 0

Multi-hazard failure analysis of highway bridges under earthquake and blast loading 地震和爆炸荷载作用下公路桥梁多灾害破坏分析

IF 5.7 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis

Pub Date : 2025-12-26 DOI: 10.1016/j.engfailanal.2025.110506

Souvik Biswas, Piyali Sengupta

Highway bridges constitute an essential part of modern infrastructure and are vital to the national economy. However, in case of natural or man-made hazards, such as earthquakes and blasts, highway bridges are highly susceptible to partial or total failure, thereby disrupting the continuous transportation and emergency evacuation routes. An increased focus on blast-resilient design of structures has been observed after the WTC attacks in the USA. Highway bridges located in seismically active regions may also be the potential targets of accidental or malicious blast loading. Consequently, it has become paramount to predict the response of existing highway bridges, as well as to implement robust design principles to prevent a catastrophic failure during the occurrence of such events in the presence of the added risk of a seismic event. Therefore, a database of 153 research papers are accumulated from the investigations conducted by the researchers across the globe during 1950 to till date so as to explore the seismic and blast performance of highway bridges. Subsequently, a comprehensive review of the state-of-the-art on seismic and blast performance of typical highway bridges in the context of independent hazard scenario and multi-hazard scenario is presented in this research. This study encompasses the research outcomes from the experimental investigations, field tests, numerical simulations, development of fragility functions, application of artificial intelligence in the seismic and blast performance of new, deteriorated and retrofitted highway bridges under single hazard scenario as well as in conjunction with another hazard using multi-hazard concepts. This study highlights the substantive findings from the existing state-of-the art and the potential research gaps in the domain of multi-hazard failure analysis of highway bridges.

公路桥是现代基础设施的重要组成部分，对国民经济至关重要。然而，在发生地震和爆炸等自然或人为灾害时，公路桥梁极易部分或全部失效，从而中断连续运输和紧急疏散路线。在美国世贸中心遭受袭击后，人们越来越关注结构的抗爆炸设计。位于地震活跃地区的公路桥梁也可能是意外或恶意爆炸荷载的潜在目标。因此，预测现有公路桥梁的反应，以及实施稳健的设计原则，以防止在地震事件增加风险的情况下发生此类事件时发生灾难性故障，变得至关重要。因此，为了探讨公路桥梁的抗震和爆破性能，从1950年至今，我们收集了153篇研究论文的数据库。随后，本文对典型公路桥梁在独立危险情景和多危险情景下的抗震和爆破性能进行了综述。本研究包括实验调查、现场测试、数值模拟、脆弱性函数的开发、人工智能在单一危险情景下的新、老化和改造公路桥梁的地震和爆炸性能中的应用以及使用多危险概念与另一种危险相结合的研究成果。本研究着重介绍了公路桥梁多灾害失效分析领域现有的研究成果和潜在的研究空白。

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引用次数: 0