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Traffic estimation in work zones using a custom regression model and data augmentation 使用自定义回归模型和数据增强对工作区域的流量进行估计
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-01-05 DOI: 10.1111/mice.13413
Ali Hassandokht Mashhadi, Abbas Rashidi, Masoud Hamedi, Nikola Marković
Accurately estimating traffic volumes in construction work zones is crucial for effective traffic management. However, one of the key challenges transportation agencies face is the limited coverage of continuous count station (CCS) sensors, which are often sparsely located and may not be positioned directly on roads where construction work zones are present. This spatial limitation leads to gaps in traffic data, making accurate volume estimation difficult. Addressing this, our study utilized a custom regularized model and variational autoencoders (VAE) to generate synthetic data that improves traffic volume estimations in these challenging areas. The proposed method not only bridges the data gaps between sparse CCS sensors but also outperforms several benchmark models, as measured by mean absolute percentage error, root mean square error, and mean absolute error. Moreover, the effectiveness of VAE-augmented models in enhancing the precision and accuracy of traffic volume estimations further underscores the benefits of integrating synthetic data into traffic-modeling approaches. These findings highlight the potential of the proposed approach to enhance traffic volume estimation in construction work zones and assist transportation agencies in making informed decisions for traffic management.
准确估计施工区域的交通量对于有效的交通管理至关重要。然而,交通运输机构面临的主要挑战之一是连续计数站(CCS)传感器的覆盖范围有限,这些传感器通常分布稀疏,可能不会直接放置在施工区域存在的道路上。这种空间限制导致了交通数据的空白,使准确的体积估计变得困难。为了解决这个问题,我们的研究使用了一个定制的正则化模型和变分自编码器(VAE)来生成合成数据,以改善这些具有挑战性的地区的交通量估计。该方法不仅弥补了稀疏CCS传感器之间的数据差距,而且通过平均绝对百分比误差、均方根误差和平均绝对误差来衡量,其性能优于几种基准模型。此外,vae增强模型在提高交通量估计的精度和准确性方面的有效性进一步强调了将合成数据集成到交通建模方法中的好处。这些研究结果突出了拟议方法的潜力,可以提高建筑工作区的交通量估算,并协助运输机构为交通管理做出明智的决策。
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引用次数: 0
Geometry physics neural operator solver for solid mechanics 固体力学几何物理神经算子求解器
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-01-03 DOI: 10.1111/mice.13405
Chawit Kaewnuratchadasorn, Jiaji Wang, Chul-Woo Kim, Xiaowei Deng
This study developed Geometry Physics neural Operator (GPO), a novel solver framework to approximate the partial differential equation (PDE) solutions for solid mechanics problems with irregular geometry and achieved a significant speedup in simulation time compared to numerical solvers. GPO leverages a weak form of PDEs based on the principle of least work, incorporates geometry information, and imposes exact Dirichlet boundary conditions within the network architecture to attain accurate and efficient modeling. This study focuses on applying GPO to model the behaviors of complicated bodies without any guided solutions or labeled training data. GPO adopts a modified Fourier neural operator as the backbone to achieve significantly improved convergence speed and to learn the complicated solution field of solid mechanics problems. Numerical experiments involved a two-dimensional plane with a hole and a three-dimensional building structure with Dirichlet boundary constraints. The results indicate that the geometry layer and exact boundary constraints in GPO significantly contribute to the convergence accuracy and speed, outperforming the previous benchmark in simulations of irregular geometry. The comparison results also showed that GPO can converge to solution fields faster than a commercial numerical solver in the structural examples. Furthermore, GPO demonstrates stronger performance than the solvers when the mesh size is smaller, and it achieves over 3<span data-altimg="/cms/asset/df3c163a-e7c6-4e48-9813-d4de41ec9066/mice13405-math-0001.png"></span><mjx-container ctxtmenu_counter="93" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/mice13405-math-0001.png"><mjx-semantics><mjx-mo data-semantic- data-semantic-role="unknown" data-semantic-speech="times" data-semantic-type="operator"><mjx-c></mjx-c></mjx-mo></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math altimg="urn:x-wiley:10939687:media:mice13405:mice13405-math-0001" display="inline" location="graphic/mice13405-math-0001.png" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mo data-semantic-="" data-semantic-role="unknown" data-semantic-speech="times" data-semantic-type="operator">×</mo>$times$</annotation></semantics></math></mjx-assistive-mml></mjx-container> and 2<span data-altimg="/cms/asset/67f630b9-5c45-4ee8-a436-0fef5e94744b/mice13405-math-0002.png"></span><mjx-container ctxtmenu_counter="94" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/mice13405-math-0002.png"><mjx-semantics><mjx-mo data-semantic- data-semantic-role="unknown" data-semantic-speech="times" data-semantic-type="operator"><mjx-c></mjx-c></mjx-mo></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math
本研究开发了几何物理神经算子(GPO),这是一种新的求解框架,用于近似不规则几何固体力学问题的偏微分方程(PDE)解,与数值求解器相比,其模拟时间显著加快。GPO利用基于最小功原理的弱形式偏微分方程,结合几何信息,并在网络架构内施加精确的狄利克雷边界条件,以获得准确有效的建模。本研究的重点是在没有任何引导解和标记训练数据的情况下,将GPO应用于复杂物体的行为建模。GPO采用一种改进的傅立叶神经算子作为主干,大大提高了收敛速度,学习了固体力学问题的复杂解域。数值实验涉及一个带孔的二维平面和一个具有狄利克雷边界约束的三维建筑结构。结果表明,GPO的几何层和精确边界约束显著提高了GPO的收敛精度和速度,在不规则几何模拟中优于以往的基准算法。对比结果还表明,在结构算例中,GPO比商用数值求解器收敛到解场的速度更快。此外,当网格尺寸较小时,GPO表现出比求解器更强的性能,在二维和三维的大自由度示例中,GPO分别实现了超过3×$times$和2×$times$的加速。进一步讨论了非线性和复杂结构的局限性,展望了未来的发展。这些显著的结果表明了该模型在大型基础设施中的潜在应用。
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引用次数: 0
Multi-stage detection of warped ceiling panel using ensemble vision models for automated localization and quantification 基于集成视觉模型的多阶段天花板翘曲检测自动定位与量化
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-01-03 DOI: 10.1111/mice.13414
Qinghua Guo, Weihang Gao, Qingzhao Kong, Xilin Lu
Suspended ceiling systems constitute a pivotal non-structural component in buildings, and the warping of panels not only compromises the seismic performance but also affects the functional integrity. This paper proposes a novel multi-stage warped panel detection (MWPD) method to automatically locate warped panels from two-dimensional images and quantify their deformation. First, the Deep Hough Transform (DHT) is employed to localize the runner line, after that, each detected line is expanded to a rectangular strip. Then ResNet18 classifies the strips as warped or intact. Those classified as warped will undergo Gabor and horizontal Sobel filters successively to highlight the curved edge. Subsequently, the Generalized Hough Transform (GHT) is used to locate pixel points on the curve, and fitting these points yields the pixel-level radius of curvature. Leveraging known orthogonal relationships and geometric dimensions of runners, pixel quantification is converted into physical maximum deflection. The experiments include two aspects: the first is conducted on a validation dataset to verify the localization stability, and the second is carried out on-site for quantification validation. Results demonstrate that the proposed MWPD method effectively localizes the warped panel, achieving an accuracy of 92.2% on the validation dataset. Additionally, the quantitative test has achieved an accuracy of approximately 85%.
吊顶系统是建筑中重要的非结构构件,吊顶板的翘曲不仅影响其抗震性能,而且影响其功能完整性。提出了一种新的多级变形面板检测方法,从二维图像中自动定位变形面板,并对其变形量进行量化。首先利用深霍夫变换(Deep Hough Transform, DHT)对流道线进行定位,然后将每条检测到的流道线扩展为矩形条带。然后ResNet18将条带分类为扭曲或完整。那些被归类为扭曲的将依次进行Gabor和水平Sobel滤波器以突出弯曲的边缘。然后,使用广义霍夫变换(GHT)定位曲线上的像素点,并拟合这些点产生像素级曲率半径。利用已知的正交关系和流道的几何尺寸,像素量化转换为物理最大挠度。实验包括两个方面:一是在验证数据集上进行定位稳定性验证,二是在现场进行量化验证。结果表明,所提出的MWPD方法在验证数据集上有效地定位了扭曲面板,准确率达到92.2%。此外,定量测试达到了约85%的准确性。
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引用次数: 0
A graph attention reasoning model for prefabricated component detection 预制构件检测的图注意推理模型
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-01-02 DOI: 10.1111/mice.13373
Manxu Zhou, Guanting Ye, Ka-Veng Yuen, Wenhao Yu, Qiang Jin
Accurately checking the position and presence of internal components before casting prefabricated elements is critical to ensuring product quality. However, traditional manual visual inspection is often inefficient and inaccurate. While deep learning has been widely applied to quality inspection of prefabricated components, most studies focus on surface defects and cracks, with less emphasis on the internal structural complexities of these components. Prefabricated composite panels, due to their complex structure—including small embedded parts and large-scale reinforcing rib—require high-precision, multiscale feature recognition. This study developed an instance segmentation model: a graph attention reasoning model (GARM) for prefabricated component detection, for the quality inspection of prefabricated concrete composite panels. First, a dataset of prefabricated concrete composite components was constructed to address the shortage of existing data and provide sufficient samples for training the segmentation network. Subsequently, after training on a self-built dataset of prefabricated concrete composite panels, ablation experiments and comparative tests were conducted. The GARM segmentation model demonstrated superior performance in terms of detection speed and model lightweighting. Its accuracy surpassed other models, with a mean average precision (mAP50) of 88.7%. This study confirms the efficacy and reliability of the GARM instance segmentation model in detecting prefabricated concrete composite panels.
在铸造预制构件之前准确检查内部构件的位置和存在对确保产品质量至关重要。然而,传统的人工目视检测往往效率低下且不准确。虽然深度学习已经被广泛应用于预制构件的质量检测,但大多数研究都集中在表面缺陷和裂纹上,很少关注这些构件内部结构的复杂性。预制复合板由于其复杂的结构,包括小的预埋件和大规模的加强肋,需要高精度、多尺度的特征识别。本研究针对预制混凝土复合板的质量检测,开发了一种实例分割模型:图注意推理模型(GARM)。首先,构建预制混凝土复合构件数据集,解决现有数据的不足,为分割网络的训练提供足够的样本;随后,在自建预制混凝土复合板数据集上进行训练后,进行烧蚀实验和对比试验。GARM分割模型在检测速度和模型轻量化方面表现出优异的性能。其精度优于其他模型,平均精度(mAP50)为88.7%。验证了GARM实例分割模型在预制混凝土复合板检测中的有效性和可靠性。
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引用次数: 0
Cover Image, Volume 40, Issue 2 封面图像,第40卷,第2期
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-01-01 DOI: 10.1111/mice.13410
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引用次数: 0
A feature-based pavement image registration method for precise pavement deterioration monitoring 基于特征的路面图像配准方法用于路面劣化精确监测
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2024-12-30 DOI: 10.1111/mice.13407
Zhongyu Yang, Mohsen Mohammadi, Haolin Wang, Yi-Chang (James) Tsai
Over the past decade, pavement imaging systems, particularly 3D laser technology, have been widely adopted by transportation agencies for network-level pavement condition evaluations. State Highway Agencies, including Georgia Department of Transportation (DOT), Florida DOT, and Texas DOT, have been collecting pavement images for over 5 years. However, these multi-year pavement images have not been fully utilized for analyzing detailed pavement deterioration. One challenge is the accurate and efficient registration of multi-temporal pavement images. This study pioneers the use of feature-based methods to address this challenge. It evaluates various feature-based image registration methods, including both state-of-the-art and novel combinations of feature detectors and descriptors. These methods are rigorously assessed using hybrid “step-by-step” and “end-to-end” performance evaluation metrics, with a ground reference dataset containing 100 pavement image pairs featuring diverse crack types and varying year gaps. The results confirm the feasibility of using feature-based techniques to register multi-temporal pavement images. A novel combination of the AKAZE detector and the Binary Robust Independent Elementary Features (BRIEF) descriptor was identified as the best-performing method, successfully registering 96 out of 100 image pairs. This advancement enables pavement engineers to accurately monitor pavement deterioration using multi-temporal images.
在过去的十年中,路面成像系统,特别是3D激光技术,已被交通机构广泛采用,用于网络级路面状况评估。包括乔治亚州运输部(DOT)、佛罗里达州运输部和德克萨斯州运输部在内的国家公路机构已经收集路面图像超过5年了。然而,这些多年的路面图像并没有被充分利用来分析详细的路面劣化。其中一个挑战是多时间路面图像的准确和高效配准。这项研究开创了使用基于特征的方法来解决这一挑战。它评估了各种基于特征的图像配准方法,包括最先进的和新的特征检测器和描述符的组合。使用混合的“一步一步”和“端到端”性能评估指标对这些方法进行严格评估,并使用包含100对路面图像对的地面参考数据集,这些图像对具有不同的裂缝类型和不同的年份间隔。结果证实了使用基于特征的技术配准多时间路面图像的可行性。AKAZE检测器和二元鲁棒独立基本特征(BRIEF)描述符的新组合被认为是性能最好的方法,成功地注册了100对图像中的96对。这一进步使路面工程师能够使用多时相图像准确监测路面恶化情况。
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引用次数: 0
Automatic steel girder inspection system for high-speed railway bridge using hybrid learning framework 基于混合学习框架的高速铁路桥梁钢梁自动检测系统
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2024-12-25 DOI: 10.1111/mice.13409
Tao Xu, Yunpeng Wu, Yong Qin, Sihui Long, Zhen Yang, Fengxiang Guo
The steel girder of high-speed railway bridges requires regular inspections to ensure bridge stability and provide a safe environment for railway operations. Unmanned aerial vehicle (UAV)-based inspection has great potential to become an efficient solution by offering superior aerial perspectives and mitigating safety concerns. Unfortunately, classic convolutional neural network (CNN) models suffer from limited detection accuracy or redundant model parameters, and existing CNN-based bridge inspection systems are only designed for a single visual task (e.g., bolt detection or rust parsing only). This paper develops a novel bi-task girder inspection network (i.e., BGInet) to recognize different types of surface defects on girder from UAV imagery. First, the network assembles an advanced detection branch that integrates the sparse attention module, extended efficient linear aggregation network, and RepConv to solve the small object with scarce samples and complete efficient bolt defect identification. Then, an innovative U-shape saliency parsing branch is integrated into this system to supplement the detection branch and parse the rust regions. Smoothly, a pixel-to-real-world mapping model utilizing critical UAV flight parameters is also developed and assembled to measure rust areas. Finally, extensive experiments conducted on the UAV-based bridge girder dataset show our method achieves better detection accuracy over the current advanced models yet remains a reasonably high inference speed. The superior performance illustrates the system can effectively turn UAV imagery into useful information.
高速铁路桥梁的钢梁需要定期检查,以确保桥梁的稳定性,为铁路运营提供安全的环境。基于无人机(UAV)的检查具有很大的潜力,可以提供优越的空中视角和减轻安全问题,从而成为有效的解决方案。不幸的是,经典的卷积神经网络(CNN)模型存在检测精度有限或模型参数冗余的问题,现有的基于CNN的桥梁检测系统仅针对单一的视觉任务(例如,螺栓检测或锈分析)而设计。本文开发了一种新的双任务梁检测网络(BGInet),用于从无人机图像中识别不同类型的梁表面缺陷。首先,该网络组建了一个集稀疏关注模块、扩展高效线性聚合网络和RepConv为一体的高级检测分支,解决样本稀缺的小目标,完成螺栓缺陷的高效识别;然后,在该系统中集成了一个创新的u型显著性解析分支,作为检测分支的补充,对锈区进行解析。顺利地,利用关键的无人机飞行参数,还开发和组装了一个像素到现实世界的映射模型,以测量铁锈区域。最后,在基于无人机的桥梁梁数据集上进行的大量实验表明,我们的方法比目前的先进模型获得了更好的检测精度,但仍保持了相当高的推理速度。优异的性能说明该系统能够有效地将无人机图像转化为有用的信息。
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引用次数: 0
Automatic classification of near-fault pulse-like ground motions 近断层脉冲式地震动的自动分类
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2024-12-24 DOI: 10.1111/mice.13408
Hongwu Yang, Yingmin Li, Weihao Pan, Lei Hu, Shuyan Ji
This study presents an automated, quantitative classification method for near-fault pulse-like ground motions, distinguishing between forward-directivity and fling-step (FS) motions. The method introduces two novel parameters—the pulse velocity ratio and pulse area ratio—which transform the classification standard from a qualitative to a quantitative framework. Combined with an enhanced pulse extraction technique that captures permanent displacement characteristics, these parameters significantly improve classification efficiency and repeatability. This automated approach overcomes the limitations of manual classification, providing reproducible results. The identified FS ground motions can be applied to the dynamic analysis of cross-fault structures, enhancing the reliability of seismic hazard assessments.
本研究提出了一种自动的、定量的近断层脉冲式地震动分类方法,区分了前向性和飞步(FS)震动。该方法引入了两个新的参数——脉冲速度比和脉冲面积比,将分类标准从定性的框架转变为定量的框架。结合增强的脉冲提取技术(捕获永久位移特征),这些参数显著提高了分类效率和可重复性。这种自动化方法克服了人工分类的局限性,提供了可重复的结果。识别出的FS地震动可用于跨断层结构的动力分析,提高地震危险性评估的可靠性。
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引用次数: 0
Infrared thermography and 3D pavement surface unevenness measurement algorithm for damage assessment of concrete bridge decks 混凝土桥面损伤评估的红外热成像及三维路面不均匀度测量算法
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2024-12-24 DOI: 10.1111/mice.13406
Mikiko Yamashita, Koichi Kawanishi, Kenji Hashizume, Pang-jo Chun
Deterioration of the concrete deck surface, including disintegration and delamination between the deck slab and pavement, presents significant challenges in bridge maintenance due to its hidden nature and the risk it poses to the deck's durability as damage progresses. Early detection is critical for preventing issues such as pothole formation and ensuring long-term durability. However, traditional methods require core sampling, which often delays detection until damage is extensive. This study proposes a nondestructive approach combining infrared thermography (IRT) and laser-based surface profiling to improve early detection of subsurface damage. IRT captures temperature variations on the pavement surface, detecting horizontal voids and moisture, while laser profiling refines the detection of deeper, progressive damage. By integrating these two methods, the technique offers a comprehensive assessment that single-method approaches cannot provide. Field validation demonstrates that this method enables precise evaluation of bridge deck conditions, contributing to safer and more efficient bridge maintenance.
混凝土桥面劣化,包括桥面板与路面之间的崩解和分层,由于其隐蔽性以及随着损伤的进展对桥面耐久性造成的风险,给桥梁维护带来了重大挑战。早期发现对于防止坑洞形成等问题和确保长期耐用性至关重要。然而,传统的方法需要岩心采样,这往往会延迟检测,直到损害范围广泛。本研究提出了一种结合红外热成像(IRT)和激光表面轮廓的无损检测方法,以提高对亚表面损伤的早期检测。IRT捕捉路面表面的温度变化,检测水平空隙和水分,而激光剖面则改进了对更深、渐进损伤的检测。通过整合这两种方法,该技术提供了单一方法无法提供的综合评估。现场验证表明,该方法能够准确评估桥面状况,有助于更安全、更有效地进行桥梁维修。
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引用次数: 0
Cover Image, Volume 40, Issue 1 封面图像,第40卷,第1期
IF 11.775 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2024-12-22 DOI: 10.1111/mice.13404
The cover image is based on the article Deep neural network based time–frequency decomposition for structural seismic responses training with synthetic samples by Ranting Cui et al., https://doi.org/10.1111/mice.13242.
封面图像基于Ranting Cui et al., https://doi.org/10.1111/mice.13242基于深度神经网络的时频分解的合成样本结构地震反应训练。
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引用次数: 0
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Computer-Aided Civil and Infrastructure Engineering
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