Engineering Structures最新文献_第9页

Predicting shear strength of beam-column joints based on mechanism-embedded feature optimization method 基于机制嵌入特征优化方法的梁柱节点抗剪强度预测

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-24 DOI: 10.1016/j.engstruct.2025.121413

Bo Yu , Risheng Li , Zecheng Yu

{"title":"Predicting shear strength of beam-column joints based on mechanism-embedded feature optimization method","authors":"Bo Yu , Risheng Li , Zecheng Yu","doi":"10.1016/j.engstruct.2025.121413","DOIUrl":"10.1016/j.engstruct.2025.121413","url":null,"abstract":"<div><div>In order to enhance the generalization and stability of machine learning (ML) models for predicting the shear strength of reinforced concrete (RC) beam-column joints, an efficient prediction model for the shear strength of RC beam-column joints was developed based on a novel mechanism-embedded feature optimization (MEFO) method. The potential features were determined first based on the diagonal strut-truss mechanisms of RC beam-column joints, which constructs a mechanical-embedded initial feature subset. Subsequently, a Fisher score ranking algorithm was further developed to obtain the optimal mechanical-embedded features by using the forward selection elimination strategy, which ensures that the selected features are consistent with both mechanical principles and statistical relevance. Finally, an efficient prediction model for shear strength of RC beam-column joints was developed based on the optimal feature subset and the cross-validation strategy. Analysis results demonstrate that the proposed MEFO method not only enhances the robustness of the feature selection process, but also ensures consistent predictive performance across a variety of algorithms. Compared with traditional methods, the proposed MEFO method has satisfied generalization and stability, which improves the mean absolute error (MAE), the mean squared error (MSE), the root mean squared error (RMSE) and the coefficient of determination (R²) of ML models by 24 %, 33 %, 21 % and 5 %, respectively.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"345 ","pages":"Article 121413"},"PeriodicalIF":6.4,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic resilience-based assessment and design of concrete bridge piers reinforced with shape memory alloy bars 形状记忆合金钢筋混凝土桥墩抗震性能评估与设计

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-24 DOI: 10.1016/j.engstruct.2025.121420

Lianxu Zhou , Aijun Ye , M. Shahria Alam

{"title":"Seismic resilience-based assessment and design of concrete bridge piers reinforced with shape memory alloy bars","authors":"Lianxu Zhou , Aijun Ye , M. Shahria Alam","doi":"10.1016/j.engstruct.2025.121420","DOIUrl":"10.1016/j.engstruct.2025.121420","url":null,"abstract":"<div><div>Using the shape memory alloy (SMA) bar to reinforce a bridge pier is considered a viable solution for improving its seismic resilience. Up to now, engineering and academic communities still lack knowledge on designing bridge piers from a seismic resilience-based perspective with quantifiable and controllable earthquake-induced disturbance. This study proposes and implements a resilience-based seismic design method for concrete bridge piers or columns reinforced with SMA bars to address this issue. Such a methodology utilizes an equivalent downtime to quantify seismic resilience and incorporates an authentic and quantifiable bridge post-earthquake recovery process into the pre-disaster evaluation and design processes. After that, this methodology is implemented through a benchmark bridge pier. A numerical model of the pier, reinforced with varying SMA replacement ratios in its plastic region, is generated considering the longitudinal rebars’ bond slip and material-related parameter uncertainty. Site-specific ground motion records are chosen based on a uniform hazard spectrum for seismic excitations. The seismic fragility and resilience surfaces of the bridge pier are generated (using residual and peak drift ratios as dual damage indicators) to reveal the influence of the SMA replacement ratio. Finally, an optimal SMA replacement ratio is ascertained based on seismic resilience objectives. The result indicates that partially rather than fully replacing the ordinary longitudinal rebars using SMA bars in the plastic hinge region of concrete bridge piers is adequate to satisfy seismic resilience requirements, achieving a balance between the bridge’s seismic resilience and its initial construction costs.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"345 ","pages":"Article 121420"},"PeriodicalIF":6.4,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Load transfer mechanisms and predictive models for steel-concrete joints of hybrid girder bridges: Experimental and theoretical studies 混合梁桥钢-混凝土节点荷载传递机制与预测模型：试验与理论研究

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-24 DOI: 10.1016/j.engstruct.2025.121434

Jiale Huang , Lei Wang , Yitao Zheng , Shaohua He , Wenjie Zhou

{"title":"Load transfer mechanisms and predictive models for steel-concrete joints of hybrid girder bridges: Experimental and theoretical studies","authors":"Jiale Huang , Lei Wang , Yitao Zheng , Shaohua He , Wenjie Zhou","doi":"10.1016/j.engstruct.2025.121434","DOIUrl":"10.1016/j.engstruct.2025.121434","url":null,"abstract":"<div><div>This study presents an integrated experimental and theoretical investigation into load transfer mechanisms and resistance prediction method for concrete-filled steel cell (CFSC) joints in steel-concrete hybrid girder bridges. An experimental program involving five large-scale CFSC specimens featuring rear-end bearing plates and perfobond shear connectors was conducted to quantify the synergistic behavior of load-transfer components. Complementary theoretical analyses derived an analytical model to determine individual component contributions to joint resistance. The experimental results indicated that the load transfer mechanism operates through a composite action between rear-end bearing plates and shear connectors, with ultimate failure attributed to localized buckling of stiffeners adjacent to bearing plates. Quantitative resistance partitioning calculated using strain results demonstrates that bearing plates contribute 61 % of total joint resistance during elastic loading stages, decreasing to 58 % in plastic stages, while shear connectors exhibit a corresponding increase from 39 % to 42 %. A predictive model for calculating load transition in CFSCs, based on equivalent spring superposition theory, was developed and shows strong agreement with experimental data from current tests and previous studies. This yields valuable insights for designing and optimizing steel-concrete joints in hybrid girder bridges.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"345 ","pages":"Article 121434"},"PeriodicalIF":6.4,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pre-cracked RC beams shear strengthened with prestressed CFRP laminates applied according to the NSM technique 采用NSM技术对预裂钢筋混凝土梁进行预应力CFRP层合板抗剪加固

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-24 DOI: 10.1016/j.engstruct.2025.121441

Hengliang Guo , Junlin Wang , Jiaxuan Chou , Joaquim A.O. Barros , Hui Peng

{"title":"Pre-cracked RC beams shear strengthened with prestressed CFRP laminates applied according to the NSM technique","authors":"Hengliang Guo , Junlin Wang , Jiaxuan Chou , Joaquim A.O. Barros , Hui Peng","doi":"10.1016/j.engstruct.2025.121441","DOIUrl":"10.1016/j.engstruct.2025.121441","url":null,"abstract":"<div><div>Several reinforced concrete (RC) structures requiring strengthening already have cracks of different width, some of them of shear nature. However, there is an extra lack of knowledge on the effectiveness of using fiber-reinforced polymer (FRP) composites for shear strengthening of pre-cracked RC structure. To bring knowledge in this domain, RC T-cross section beams with maximum pre- induced shear crack widths of 0, 0.5 and 1.0 mm were strengthened in shear using near-surface-mounted (NSM) technique with passive and prestressed carbon fiber-reinforced polymer (CFRP) laminates. The effects of maximum width of the pre-cracks, passive or prestressed CFRP laminates, and CFRP shear strengthening ratio on the beam’s load carrying capacity, deflection performance, stiffness degradation and CFRP strain were analyzed. The ability of prestressed CFRP to restrain the pre-cracks in the beams while they are subjected to the sustained pre-load was also investigated. The test results showed that prestressed CFRP reduced the pre-crack width of RC beams under sustained pre-load by 12.4–50.4 %. The pre-cracking, despite to have decreased the beam’s stiffness, had minimal influence on the growth rate of the maximum shear crack width, and the decrease of the beam’s load carrying capacity was limited to 3.0 % and 14.5 % for a pre-crack width of 0.5 and 1.0 mm, respectively. Applying prestress to CFRP laminates and decreasing CFRP spacing were effective in reducing the maximum shear crack width, enhancing the load carrying capacity and improving stiffness of strengthened beams. A formulation for calculating the contribution of prestressed NSM CFRP for the shear capacity of RC beams was proposed and its good predictive performance is demonstrated.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"345 ","pages":"Article 121441"},"PeriodicalIF":6.4,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexural performance of RC slabs strengthened by UHTCC/CFRP hybrid materials considering PE debonding effects 考虑PE脱粘效应的UHTCC/CFRP复合材料加固RC板抗弯性能

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-24 DOI: 10.1016/j.engstruct.2025.121369

Hongwei Xie , Qinghua Li , Chaokun Hong , Zhibin Zhuang , Shilang Xu

{"title":"Flexural performance of RC slabs strengthened by UHTCC/CFRP hybrid materials considering PE debonding effects","authors":"Hongwei Xie , Qinghua Li , Chaokun Hong , Zhibin Zhuang , Shilang Xu","doi":"10.1016/j.engstruct.2025.121369","DOIUrl":"10.1016/j.engstruct.2025.121369","url":null,"abstract":"<div><div>Flexural behavior of six reinforced concrete (RC) slabs was investigated. The slabs were strengthened by different lengths of externally bonded (EB) CFRP sheets using sprayed ultra-high toughness cementitious composite (UHTCC) as bonding layers to induce plate end (PE) debonding. The structural performances including failure mode, load-deflection/strain response, toughness, and interfacial stress were analyzed. A three-parameter elastic foundation model was proposed to quantify interfacial stresses and predict structural flexural behaviors. The results reveal that debonding substantially degrades load-bearing capacity (38.20–66.99 %), ultimate deflection (57.77–88.08 %), and toughness (73.50–96.24 %), and severely limits CFRP utilization ratio to only 12.35–40.29 %. For equal-length UHTCC/CFRP layers, Interface I (concrete-UHTCC) reaches maximum stress at the end, while Interface II (UHTCC-FRP) exhibits peak stress at locations between midspan and ends, with both interfacial stresses decreasing as strengthening length increases. When UHTCC length is larger than CFRP, both interfaces reach their peak stresses at the end. However, Interface I end stress becomes CFRP-length-independent, while Interface II peak stress reduces by 94.13 % as CFRP length increases from 100 mm to 400 mm. The theoretical model accurately predicts the debonding locations and provides reasonable estimations of initial stiffness and ultimate deflection. However, the elastic framework results in overestimated load-carrying capacity predictions.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"345 ","pages":"Article 121369"},"PeriodicalIF":6.4,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and numerical investigation on the rotational resistance behavior of aluminum alloy insert hub joints 铝合金轮毂插片接头转动阻力特性的实验与数值研究

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-24 DOI: 10.1016/j.engstruct.2025.121403

Jinxing Feng , Zhenggang Cao , Xiao Hu , Yifan Ding , Feng Fan

{"title":"Experimental and numerical investigation on the rotational resistance behavior of aluminum alloy insert hub joints","authors":"Jinxing Feng , Zhenggang Cao , Xiao Hu , Yifan Ding , Feng Fan","doi":"10.1016/j.engstruct.2025.121403","DOIUrl":"10.1016/j.engstruct.2025.121403","url":null,"abstract":"<div><div>Aluminum alloy insert hub (AAIH) joints provide a cost-effective and efficient solution for aluminum alloy space latticed structures composed of circular hollow section (CHS) members, utilizing mechanical meshing between serrations and matching slots. Three-point bending tests were conducted to investigate the rotational resistance behavior of AAIH joints. The failure modes along the major and minor axes were identified as local buckling on the compression side of the tube's transition zone and rigid rotation of the tubes around the hub, respectively. The <em>P</em>-<em>w</em> curves revealed that AAIH joints exhibit semi-rigid behavior and significant post-buckling capacity in the major axis direction, whereas behaving nearly as hinged connections in the minor axis direction. The <em>P</em>-<em>ε</em> curves indicated that large deformations were primarily concentrated in the tube's transition zone, with negligible axial force in the tubes during testing. Finite element (FE) models of AAIH joints were subsequently developed using the ANSYS and validated against experimental results in terms of deformation process, ultimate load, and <em>M</em>-<em>φ</em> curves. Furthermore, the <em>M</em>-<em>φ</em> curves of AAIH joints were obtained, and the deformation and stress distribution in the joint zone were analyzed via numerical simulation. Finally, the influence of two gap characteristics between the serrations and slots on the <em>M</em>-<em>φ</em> curves was further investigated.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"345 ","pages":"Article 121403"},"PeriodicalIF":6.4,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Initial geometric imperfections of modules in modular integrated construction structures 模块化集成结构中模块的初始几何缺陷

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-23 DOI: 10.1016/j.engstruct.2025.121406

Yue-Yang Ding , Yao-Peng Liu , Si-Wei Liu , Yi-Qun Tang , Siu-Lai Chan

{"title":"Initial geometric imperfections of modules in modular integrated construction structures","authors":"Yue-Yang Ding , Yao-Peng Liu , Si-Wei Liu , Yi-Qun Tang , Siu-Lai Chan","doi":"10.1016/j.engstruct.2025.121406","DOIUrl":"10.1016/j.engstruct.2025.121406","url":null,"abstract":"<div><div>Modular Integrated Construction (MiC) structures possess unique sources of initial geometric imperfections that differ significantly from those found in traditional steel structures. Conventional design approaches, which often focus on element-level or non-structural deviations, fail to adequately capture these module-level imperfections, potentially leading to substantial errors in structural assessment and design. This study addresses this critical gap by proposing mathematical models that characterize module-level imperfections based on localized manufacturing tolerances. The effectiveness of the models is validated through Monte Carlo simulations, which establish clear relationships among allowable tolerances, module dimensions, and geometric deviations. By enabling the direct consideration of initial imperfections at the modular unit level, the proposed method fully leverages the high-precision nature of MiC and supports efficient structural design using the Direct Analysis Method (DAM) without reliance on the effective length method. Furthermore, the statistical analysis of manufacturing tolerances provides a foundation for setting appropriate precision requirements to ensure desired module quality. This approach offers a practical and reliable solution for the performance-based design of MiC structures.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"344 ","pages":"Article 121406"},"PeriodicalIF":6.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear vibrations of a rotating sandwich functionally graded porous plate reinforced by graphene nanoplatelets 石墨烯纳米片增强的旋转夹层功能梯度多孔板的非线性振动

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-23 DOI: 10.1016/j.engstruct.2025.121347

Shanyi Wang , Tianhao Huang , Jian Gong , Ju Su , Tianyu Zhao , Yao Liu

{"title":"Nonlinear vibrations of a rotating sandwich functionally graded porous plate reinforced by graphene nanoplatelets","authors":"Shanyi Wang , Tianhao Huang , Jian Gong , Ju Su , Tianyu Zhao , Yao Liu","doi":"10.1016/j.engstruct.2025.121347","DOIUrl":"10.1016/j.engstruct.2025.121347","url":null,"abstract":"<div><div>The blade-disk rotor structure is widely utilized in rotating machinery such as turbines and generators. In this study, the disk is considered perfectly rigid, and the blade is modeled as a rectangular plate. Addressing the large deformations and chaotic phenomena exhibited by rotating blades in complex environments, a geometrically nonlinear model is developed for a rotating sandwich functionally graded porous plate (SFGPP) reinforced with graphene nanoplatelets (GPLs) subjected to sinusoidal pulse excitation. Based on the von-Kármán large deformation assumptions and Kirchhoff plate theory, the energy expression for the forced vibration of the SFGPP is derived. The governing equations of the structure are established using Hamilton's principle and the assumed mode method, and the dynamic response is solved employing the fourth-order Runge-Kutta method. Bifurcation and chaotic phenomena induced by rubbing are analyzed through systematic bifurcation diagrams and maximum Lyapunov exponent plots under varying material parameters. This study details how various material parameters affect the nonlinear vibration characteristics of the SFGPP, specifically analyzing plate thickness, porosity coefficient and distribution, GPL distribution and content, as well as GPL length-to-thickness and length-to-width ratios. The methodology and findings presented herein provide significant guidance for the in-depth analysis of the vibrational response of SFGPPs reinforced with GPLs, particularly their complex dynamic characteristics under critical partial rubbing conditions. More importantly, the revealed dependencies of dynamic behavior on material parameters offer crucial insights and quantitative data for the design optimization of such advanced composite blades, ultimately contributing to enhanced reliability and longevity of high-performance rotating machinery.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"344 ","pages":"Article 121347"},"PeriodicalIF":6.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical performance of an assembled 3D auxetic hybrid structure under eccentric and axial compression 偏心和轴向压缩下装配式三维异形混合结构的力学性能

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-23 DOI: 10.1016/j.engstruct.2025.121416

Jia Shuo Liu, Yi Zhang, Xiang Jie Wei, Wei Zhong Jiang, Meng Li Xue, Yi Chao Qu, Tao Ding, Jia Hui Zhang, Lin Hua, Tong Cheng, Xin Ren

{"title":"Mechanical performance of an assembled 3D auxetic hybrid structure under eccentric and axial compression","authors":"Jia Shuo Liu, Yi Zhang, Xiang Jie Wei, Wei Zhong Jiang, Meng Li Xue, Yi Chao Qu, Tao Ding, Jia Hui Zhang, Lin Hua, Tong Cheng, Xin Ren","doi":"10.1016/j.engstruct.2025.121416","DOIUrl":"10.1016/j.engstruct.2025.121416","url":null,"abstract":"<div><div>Recently, auxetic structures with complex and diverse configurations have emerged increasingly. However, due to the limitations of 3D metal printing technology, the integrated manufacturing of complex structures poses significant challenges. Here, we apply a bolt-welding modular assembly approach to 3D auxetic structures, successfully manufacturing both a novel dumbbell four-pointed-star hybrid structure (DFS) and a traditional re-entrant structure (TRS). This approach effectively avoids the challenges of overall printing, support residue, and uneven deformation during additive manufacturing. Through experiment and simulation, the mechanical performances of DFS were systematically analyzed under eccentric and axial compression, with a particular focus on eccentricity and aspect ratio effects, followed by a comparative analysis with typical re-entrant structures. The results demonstrate that DFS not only exhibits superior deformation and mechanical performance under eccentric loading but also shows greater sensitivity to large eccentricities. With increasing aspect ratios, DFS exhibits enhanced energy absorption under axial compression, while its auxetic effect follows a first-increases-then-decreases trend due to reduced structural stability. Meanwhile, DFS demonstrates superior mechanical characteristics and enhanced auxetic effects compared to several re-entrant structures. The significance of this work lies in providing a conceptual framework for future modular assembly of metamaterials and mechanical analysis under eccentric compression.</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"344 ","pages":"Article 121416"},"PeriodicalIF":6.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A versatile synthetic data generation framework for crack detection 用于裂纹检测的通用合成数据生成框架

IF 6.4 1区工程技术

Engineering Structures Pub Date : 2025-09-23 DOI: 10.1016/j.engstruct.2025.121428

Jiawei Xie , Baolin Chen , Anna Giacomini , Hongyu Guo , Umair Iqbal , Jinsong Huang

{"title":"A versatile synthetic data generation framework for crack detection","authors":"Jiawei Xie , Baolin Chen , Anna Giacomini , Hongyu Guo , Umair Iqbal , Jinsong Huang","doi":"10.1016/j.engstruct.2025.121428","DOIUrl":"10.1016/j.engstruct.2025.121428","url":null,"abstract":"<div><div>Deep learning has shown remarkable promise in automating crack detection for civil infrastructure inspection, yet collecting and annotating large, high-quality datasets remains a major bottleneck. To address this challenge, we propose CrackGen—a versatile, fully controllable framework for synthetic data generation. By integrating fine-tuned Stable Diffusion models with ControlNet, CrackGen synthesizes unlimited crack images that closely mimic real-world variability in material textures, crack patterns, and morphological features. A pivotal innovation of our approach is that the same control conditions used to steer image creation naturally serve as ground truth labels, eliminating the need for labor-intensive post-generation annotation. This feature is especially critical for large-scale dataset construction. Through fine-tuning on extremely small training sets, CrackGen inherits the learned knowledge of Stable Diffusion, enabling users to adjust crack widths, orientations, and background materials through simple prompt adjustments. Our experiments systematically analyze how different parameter settings affect the fidelity and diversity of generated images. Additionally, we propose novel crack sketching methods, including a Rapidly-exploring Random Trees (RRT) algorithm that emulates real-world crack propagation paths to produce complex, fractal-like crack networks. Extensive experiments demonstrate that models trained purely on CrackGen-generated data achieve consistent, high-quality results on real-world crack detection tasks, validating the synthetic data’s robustness and practicality. This robustness was further confirmed through cross-domain validation on rock surfaces. The source code and datasets are freely available from GitHub repository (<span><span>https://github.com/GEO-ATLAS/CrackGen</span><svg><path></path></svg></span>).</div></div>","PeriodicalId":11763,"journal":{"name":"Engineering Structures","volume":"344 ","pages":"Article 121428"},"PeriodicalIF":6.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0