Open Access
ARTICLE
Qingmin Hou1, Guanghua Xiao1, Qiang Liu1, Chunhui Su2, Ting Yan1, Yafen Sun1, Peng Zhang3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.084518
（This article belongs to the Special Issue: Monitoring, Assessment and Safe Operation of Energy Infrastructure)
Abstract To address the critical need for reliable condition monitoring of rotating components (e.g., crane slewing bearings, thrusters) in harsh marine environments characterized by strong electromagnetic interference, salt spray, and persistent vibration, this paper presents a novel smart sensing system for high-precision rotation angle measurement. The proposed intelligent inspection system employs a vision-based principle: a laser spot, projected from a turntable synchronized with the measured shaft, forms a circular trajectory on a fixed Complementary Metal-Oxide-Semiconductor (CMOS) image sensor. A robust machine vision algorithm, integrating an improved Canny-Kirsch operator and a least-squares ellipse fitting method, achieves sub-pixel… More >
Open Access
ARTICLE
Pulkit Kumar, Junzhen Wang*, Daniel J. Barnard
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.083081
Abstract Quantitative characterization of non-uniform out-of-plane fiber waviness in carbon fiber reinforced polymer (CFRP) laminates remains a significant challenge in ultrasonic testing-based nondestructive evaluation (NDE). To elucidate the distinctive interaction mechanisms between a focused normal-incidence ultrasonic wave and embedded wrinkle defects, this study presents a systematic numerical and experimental investigation. Two-dimensional multi-physics finite element models are initially developed to reveal the wave scattering features induced by both convex and concave waviness. The models explicitly account for both the geometric variation of fiber waviness and the accompanying resin-rich and resin-poor zones. In addition, immersion ultrasonic pulse-echo C-scan… More >
Open Access
ARTICLE
Hongtao Yue1, Xiang Yu2,*, Chenghu Wang2, Xiaona Kou1, Zhongyuan Liu1,3, Manli Ou1
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.082850
Abstract Dynamic elastoplastic time history analysis is a critical methodology for evaluating the seismic performance and damage evolution mechanisms of complex long span structures. To address the modeling challenges inherent in hybrid frame space grid systems, this study implemented an efficient collaborative workflow utilizing the data interface between YJK and ABAQUS. A long span sports training building served as the research prototype for systematic multidimensional elastic and elastoplastic dynamic evaluations. The results indicate that under frequent earthquakes, the structure exhibits pronounced sensitivity to broadband excitations, with the artificial wave R1 inducing a maximum elastic inter story… More >
Open Access
ARTICLE
Kun Feng*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.084605
（This article belongs to the Special Issue: Sustainable and Resilient Civil Infrastructure with Intelligence and Digital Transformation)
Abstract This study proposes an acceleration-based drive-by monitoring framework for extracting bridge operational deflection shape information from vehicle responses alone. A transfer function formulation is developed to reconstruct contact-point bridge accelerations directly from simulated multi-degree-of-freedom vehicle acceleration measurements, followed by band-pass filtering around the first natural frequency and Hilbert transform envelope extraction to obtain spatial amplitude distributions along the bridge span. The framework is evaluated using a coupled vehicle bridge interaction model under both idealised (zero road profile) and realistic (ISO Class A and Class B) conditions, considering healthy and bearing-damaged scenarios across a range of… More >
Open Access
ARTICLE
Yu Li1, Xinyi Wang2, Deqiang Yang3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.084012
（This article belongs to the Special Issue: Durability Assessment of Engineering Structures and Advanced Construction Technologies)
Abstract To address the insufficient durability of recycled aggregate concrete (RAC) applied in the inland river bridge splash zone under low-chloride salt wet-dry cycling, this study systematically investigated the electrochemical corrosion characteristics of HRB400 steel reinforcement in nano-SiO2 modified RAC. With recycled coarse aggregate replacement ratios of 0% and 50% and nano-SiO2 dosages of 0%, 3%, and 6% as key variables, 300 accelerated dry-wet cycle tests were conducted in accordance with GB/T 50082-2009. Open circuit potential (OCP), linear polarization, and electrochemical impedance spectroscopy (EIS) were adopted to characterize the corrosion evolution of steel bars, combined with porosity… More >
Open Access
ARTICLE
Yangkai Ou, Boi-Yee Liao*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.081608
（This article belongs to the Special Issue: Durability Assessment of Engineering Structures and Advanced Construction Technologies)
Abstract Based on three-component (E–N–Z) ambient vibration observations, this study investigates the dynamic characteristics of shallow subsurface conditions and their influence on the seismic response of a high-rise building in a complex urban environment. Ambient vibration measurements were conducted to characterize site dynamic properties and to explore their relationship with structural vibration behavior. Frequency, amplification factor, and site vulnerability index were extracted using the horizontal-to-vertical (H/V) spectral ratio method applied to ambient vibration records. An empirical relationship between the fundamental frequency and sedimentary layer thickness was established using ambient vibration observations and borehole investigation data, and… More >
Open Access
ARTICLE
Kai Luo1,2,*, Yuzhi Chen3
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.079382
（This article belongs to the Special Issue: Lamb Waves for Structural Health Monitoring: From Fundamentals to Applications)
Abstract Material property variability in carbon fiber-reinforced polymer composites is a major source of uncertainty in quantitative Lamb wave-based delamination imaging. Even minor deviations in elastic properties can alter dispersion characteristics and wave propagation behavior, thereby reducing the reliability of imaging-based assessments. To systematically investigate this effect, the present study examines the influence of subtle material variations on Lamb wave responses through combined numerical modeling and finite element simulations. Time-of-flight features at the excitation frequency are extracted using a continuous wavelet transform with Morlet wavelets, enabling robust identification of mode-dependent arrival information. Within a finite element… More >
Open Access
ARTICLE
Bingbing Han1,2, Ruidong Li1, Yu Zhang2,3,*, Hui Zhang4
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.075275
（This article belongs to the Special Issue: Health Monitoring of Transportation Infrastructure Structure)
Abstract To explore the impact of seismic action on the stability of saline soil subgrade slopes considering the influence of surface runoff on the strength of saline soil subgrade fillers, this paper first conducted shear tests on saline soil under different moisture contents to determine the influence of moisture content on the shear strength of saline soil. Then, the initial moisture field of the saline soil subgrade was simulated using COMSOL software, and a subgrade moisture content-strength parameter model was established based on the calculated moisture fields under different rainfall intensities. Subsequently, based on the subgrade… More >
Open Access
ARTICLE
Caiping Huang*, Yulong Mei, Wangyuan Tian, Zihang Yu
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.073282
（This article belongs to the Special Issue: Smart Sensors and Smart CFRP Components for Structural Health Monitoring of Aerospace, Energy and Transportation Structures)
Abstract Bridge damage detection is critical to bridge maintenance practices. However, traditional inspection methods are plagued by high labour intensity and low operational efficiency. To enhance the intelligence, objectivity, and efficiency of bridge damage detection, this study proposes an automated approach for the identification and quantitative measurement of concrete defects. Specifically, this method adopts the Visual Geometry Group (VGG) network as the backbone of the U-Net architecture to perform semantic segmentation on images containing typical concrete defects, including spalling, cracks, and exposed reinforcement bars. Subsequently, mathematical morphology algorithms are employed to optimise the segmented images, thereby… More >
Open Access
REVIEW
Mohammed Alghannam1, Marwan Abdulqader1, Amin Al-Fakih1,2,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.079454
Abstract This review presents a comprehensive evaluation of jacketing techniques used in reinforced concrete (RC) columns repair and rehabilitation. It critically examines reinforced concrete jacketing, steel jacketing, fiber-reinforced polymer (FRP) jacketing, fiber-reinforced cementitious matrix (FRCM) jacketing, and ferrocement jacketing based on recent experimental, analytical, and numerical studies. The paper discusses material characteristics, application methods, and performance under different loading and environmental conditions. Special focus is placed on advancements such as hybrid FRP systems and high-performance composites, which aim to overcome limitations of traditional jacketing techniques. The review also explores non-destructive testing methods for assessing retrofitted structures. More >
Open Access
ARTICLE
Lu Zhang1,2, Guifu Jia1,2, Haowei Xu1,2, Jian Zeng1,3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.082602
（This article belongs to the Special Issue: AI-driven Monitoring, Condition Assessment, and Data Analytics for Enhancing Infrastructure Resilience)
Abstract Large-span cable-net roof systems used in public infrastructure require efficient and reliable inspection or structural health monitoring because local prestress loss is frequently observed, which significantly affects structural safety and mechanical performance. To address the high computational cost of dynamic analysis and over-reliance on baseline in conventional methods, this study proposes a baseline-free damage localization framework for two-dimensional periodic cable-net structures by integrating periodic structural design, recursive finite element analysis, and frequency-response-based identification. First, a square periodic cable-net unit cell with crossed diagonal cables is established, and the two-dimensional dispersion curve considering initial pre-stress is… More >
Open Access
ARTICLE
Xue Yang1, Shunpeng Yang1, Wanying Shi2,*, Weizhong Yuan1, Sihui Long1, Ruixiao Sun3, Cheng Yang4
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.078468
（This article belongs to the Special Issue: AI-Enhanced Low-Altitude Technology Applications in Structural Integrity Evaluation and Safety Management of Transportation Infrastructure Systems)
Abstract Unmanned aerial vehicle (UAV) imaging techniques have emerged as a promising solution to boost the accuracy and dependability of visual monitoring for railway facilities and peripheral ecological environments, garnering widespread research interest in recent years. Nevertheless, aerial images acquired by UAVs are prone to severe quality deterioration in fog and haze weather scenarios, which greatly hinders the progress and effectiveness of railway routine inspection work. As modern railway systems pursue higher operational safety benchmarks and intelligent rail transit technologies achieve iterative breakthroughs, video monitoring systems have evolved into indispensable core equipment for identifying and early… More >
Open Access
ARTICLE
Ning Lin*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.080823
Abstract The fully grouted sleeve connection is a key joint type in precast concrete structures. Its mechanical performance after high-temperature exposure is critical for the post-fire safety assessment of these structures. This paper experimentally investigates the influence of different peak temperatures on the tensile performance of fully grouted sleeve connections. A total of 36 fully grouted sleeve specimens, 36 single rebar specimens, and their corresponding grout cubes were prepared. All specimens were heated to the target temperatures and then cooled naturally. Afterwards, static tensile tests and compressive strength tests were performed. The results show that, compared… More >
Open Access
ARTICLE
Hongyan Liu, Fang Wang, Jie Zhao, Feng Wu*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.079457
（This article belongs to the Special Issue: Advanced Strategies for Structural and Non-Structural Seismic Protection and Damage Prediction in Reinforced Concrete Structures)
Abstract This study investigates the thermo-mechanical behavior and residual strength of full-scale reinforced concrete (RC) beams subjected to ISO-834 fire exposure, emphasizing temperature-dependent material degradation and bond-slip effects. A sequentially coupled numerical framework was developed in ABAQUS, integrating a temperature-indexed Concrete Damage Plasticity (CDP) model for concrete, elastoplastic steel constitutive laws, and a temperature-dependent bond-slip model implemented via nonlinear SPRING2 elements. The model explicitly accounts for post-peak concrete softening, steel yield degradation, and interface deterioration, and was calibrated against full-scale experiments. Experimental measurements included internal and surface temperatures, load–midspan deflection, and residual strength after natural cooling. More >
Open Access
ARTICLE
Boyang Zhang1, Kang Gao2, Jianan Gu3, Li Ai4, Yuang Geng3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.083281
Abstract Long-term guided-wave structural health monitoring accumulates large volumes of sensing data, but dense damage labels are rarely available in field deployment. Unsupervised reconstruction-based detection methods, which identify damage through reconstruction discrepancy, are therefore appealing for their ability to learn directly from unlabeled data. However, environmental and operational variations and mixed adjacent-stage samples in transition windows both degrade unsupervised detection performance. Regularization offers a principled way to improve the robustness of unsupervised detection against such confounding variations, but its effect on fine-grained, transition-level detection has not been systematically studied. This paper presents a controlled empirical study… More >
Open Access
ARTICLE
Zongqi Xiong1, Yu Li2, Xinxin Cao3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.083682
（This article belongs to the Special Issue: Durability Assessment of Engineering Structures and Advanced Construction Technologies)
Abstract Accurate detection and quantitative characterization of bridge pier cracks are essential for UAV-assisted structural health monitoring, but conventional horizontal bounding box detectors often suffer from geometric mismatch, background redundancy, and missed detection of slender cracks in dense regions. To address these limitations, this study proposes an oriented object detection-based framework for high-fidelity crack representation and physical quantification. A dedicated PierCrack-OBB dataset was first constructed from real bridge inspection images and annotated using multi-segment oriented bounding boxes to better represent locally curved and high-aspect-ratio cracks. On this basis, the standard YOLOv8-OBB framework was improved by incorporating… More >
Open Access
ARTICLE
Hassan Ibrahim Tasiu1, Hassan Shuaibu Abdulrahman1, Ali Almusawi2,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.082304
Abstract Conventional bitumen used in road construction often exhibits insufficient resistance to rutting, fatigue cracking, and thermal distress, particularly in hot climates. This study investigates graphene nanoplatelets (GNPs) as a bitumen modifier to enhance rheological performance and develops data-driven predictive models for key rheological parameters. Penetration-grade bitumen was modified with GNP contents ranging from 1% to 5% by weight of binder. Conventional tests, including penetration, softening point, ductility, and flash point, alongside rheological characterization using a Dynamic Shear Rheometer (DSR), were performed to evaluate the complex shear modulus (G*) and phase angle (
Open Access
ARTICLE
Jiyi Li1, Zongqi Xiong2, Xinxin Cao3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.083367
（This article belongs to the Special Issue: Durability Assessment of Engineering Structures and Advanced Construction Technologies)
Abstract In response to the common interlaminar shear and delamination defects in the pavement of long-span steel bridges, this paper investigates the interface fatigue failure mechanism of the “SMA-13 + epoxy resin + orthotropic steel plate” system. Static direct shear tests indicate that the optimal application rate of epoxy resin is 1.5 kg/m2, and that elevated temperatures cause the failure mode to transition from brittle fracture to ductile creep. Based on full-factorial dynamic shear fatigue tests, this study discarded subjective empirical thresholds and innovatively proposed the “geometric tangent method” to quantitatively define fatigue life. Analysis of variance More >
Open Access
ARTICLE
Xing Xu1, Guohui Feng2,*, Rui Wang3, Mingwang Tey4, Gang Wei2, Xiaozhen Fan2, Zhaorui Lin5
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.084168
（This article belongs to the Special Issue: Health Monitoring of Transportation Infrastructure Structure)
Abstract The imposition of surcharge loads adjacent to subsurface structures can precipitate significant alterations in the soil’s mechanical behavior, thereby jeopardizing the structural safety of nearby tunnels. In response to this challenge, an analytical solution has been developed to quantify the interaction between a tunnel and its surrounding soil under the influence of surcharge loads. Initially, the Boussinesq equation is employed to calculate the additional stresses imposed on an existing tunnel by adjacent surcharges. Subsequently, the system’s energy equation is formulated by integrating the dual-parameter Vlasov foundation model with considerations of the lateral soil impact on More >
Open Access
ARTICLE
Jiahao Wang1, Yuanxun Zheng1,*, Chaowei Du1, Shuaijie Zhang2, Xiangyang Chen3, Xiaojun Che4, Fuhua Wang5
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.080081
Abstract Spherical hinges are critical load-bearing components in swing bridges, yet their complex contact friction behavior remains insufficiently investigated due to material and contact nonlinearities. Conventional parametric analysis based solely on finite element simulations suffers from low computational efficiency and limited consideration of multi-parameter coupling. In this study, a refined finite element model of an actual multi-lane swing bridge is established, and a support vector regression (SVR) metamodel is developed to efficiently predict contact stress distribution and frictional moments. Compared with existing studies that focus on single-factor parametric analysis, this work introduces a high-accuracy metamodel framework… More >
Open Access
ARTICLE
Zhichao Liu1,2, Jun Zhang2,*, Dongling Yu3, Libing Jin1, Bingquan Song3
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.081186
（This article belongs to the Special Issue: Intelligent Monitoring and Life-Cycle Management for Enhancing Engineering Structural Durability and Safety)
Abstract The chloride ion penetration resistance of manufactured sand concrete (MSC) critically determines the durability of marine concrete structures. However, its accurate prediction is challenging due to high uncertainty from complex influencing factors. To address this, a back-propagation neural network model optimized by a hybrid Whale Optimization Algorithm and Adaptive Moment Estimation strategy (WOA-Adam-BPNN) was developed to predict the electrical flux. The model was trained and tested on 245 experimental datasets covering eight key parameters and validated across four typical mix proportions. Results show that the WOA-Adam hybrid strategy effectively combines global search capability with adaptive More >
Open Access
ARTICLE
Mohamed Zitouni1, Belkacem Lamri2, Abdelhak Kada2, Mário Rui Arruda1,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.081538
Abstract The use of self-compacting concrete (SCC) in structural elements has significantly increased in recent years due to its superior fresh properties, including high flowability, ease of placement, and ability to consolidate without vibration, making it particularly suitable for complex and densely reinforced structures. However, despite these advantages, SCC presents certain limitations when exposed to fire, which is considered one of the most severe threats to structural safety. This is mainly due to the lack of comprehensive understanding and design guidelines regarding its behaviour under elevated temperatures, particularly at the structural element level. This paper presents… More >
Open Access
ARTICLE
Xinzhan Li1, Haixin Sun2, Li Li1,3,*, Zongjin Li3, Guangming Xie4, Guangzhao Li4
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.081014
（This article belongs to the Special Issue: Infrastructure Resilience Enhancement Empowered by Intelligent Perception and Advanced Algorithms)
Abstract To utilize waste clay bricks and reduce carbon emissions, recycled brick powder (RBP) was prepared from waste brick-concrete structures and used to produce alkali-activated slag-recycled brick powder foam concrete (ASRFC). This paper evaluated the impact of RBP replacement rates and water-binder ratio on the physical and mechanical properties of foam concrete, including its thermal conductivity, strength, and pore structure. The results demonstrated that the addition of 10% RBP resulted in decreases in the apparent density and thermal conductivity of ASRFC, while flexural strength and the flexural-compressive strength ratio exhibited significant increases. These phenomena can all… More >
Open Access
ARTICLE
Dongjie Tan1, Xiaoyu Yang2, Xinxin Cao3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.081510
（This article belongs to the Special Issue: Durability Assessment of Engineering Structures and Advanced Construction Technologies)
Abstract Interfacial adhesion failure is the primary limiting factor in the long-term durability of epoxy-emulsified asphalt micro-surfacing pavements. However, while digital image correlation (DIC) has been extensively applied to evaluate the bulk fatigue of traditional hot-mix asphalt and concrete, its specific application to the complex bi-material interface between rigid concrete substrates and cold-mixed, thermosetting epoxy-asphalt overlays remains limited. Consequently, current research lacks real-time data on full-field strain evolution and the transitional damage localisation mechanisms during dynamic fatigue processes under extreme temperature gradients. To this goal, three-point bending fatigue tests were performed at various temperatures (ranging from… More >
Open Access
REVIEW
Linren Zhou*, Zhibo Xie, Jingyi Huang
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.080529
Abstract Temperature action is a primary environmental load that infrastructure endures during long-term service, and it is also one of the key causes of structural performance deterioration. With global warming and the increasing frequency of extreme weather, the temperature actions on structures are becoming increasingly complex and severe. Whether current design codes can adapt to environmental climate changes, particularly regarding how to effectively respond to the impact of extreme temperatures, has become a critical concern in engineering. Based on the current structural design codes of major countries and regions (including China, the United States, New Zealand,… More >
Open Access
ARTICLE
Liyuan Wang1, Heng Qiao1, Zhenbin Huang1, Krishna Shrestha2,3,*, Xueyuan Yan1
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.080806
（This article belongs to the Special Issue: Durability Assessment of Engineering Structures and Advanced Construction Technologies)
Abstract This paper introduces a novel external prestressing system specifically designed for strengthening hollow slab beams. To validate the system’s feasibility and isolate flexural behavior from interface slip effects, experimental investigations were conducted on monolithically cast specimens representing an idealized, fully bonded state. By integrating theoretical analysis, experimental testing, and finite-element numerical simulation, the study examines the mechanical behavior and design principles of the proposed configuration. Results indicate that the stress development process of the externally prestressed beam (N2) exhibits strong similarity to that of a conventional internally prestressed beam (N1). Notably, the implementation of the More >
Open Access
ARTICLE
Hongxing Li1, Xizhong Xu2,*, Liang Wang1, Jiabo Hu2, Zhice Zhao1
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.081450
（This article belongs to the Special Issue: Sustainable and Durable Construction Materials)
Abstract Differential settlement control in highway widening projects on soft soil remains a major challenge. This study investigates the mechanisms of differential settlement in widened embankments and develops an intelligent prediction framework by integrating high-fidelity numerical simulations with physics-constrained deep learning. First, comprehensive numerical simulations were performed using a Hardening Soil (HS) model considering structural degradation in PLAXIS 2D. This work revealed the redistribution of additional stress under widening loads and elucidated the evolution mechanisms of plastic zone development and interface shear behavior at the junction of new and existing subgrades. A reasonable step width range… More >
Open Access
ARTICLE
Anna Szymczak-Graczyk1, Zijadin Guri2, Ilir Canaj2, Tomasz Garbowski3,*
Structural Durability & Health Monitoring, DOI:10.32604/sdhm.2026.080104
（This article belongs to the Special Issue: Modern Inverse Analysis Approaches for Structural Diagnosis and Parameter Identifications)
Abstract In this study, an energy-consistent analytical–numerical framework is proposed to determine the effective shear correction factor
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