ce/papers最新文献_第6页

Seismic reliability-driven decision-making for existing reinforced concrete bridges 既有钢筋混凝土桥梁的地震可靠度决策

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3364

Mariano Angelo Zanini, Flora Faleschini, Klajdi Toska, Carlo Pellegrino

{"title":"Seismic reliability-driven decision-making for existing reinforced concrete bridges","authors":"Mariano Angelo Zanini, Flora Faleschini, Klajdi Toska, Carlo Pellegrino","doi":"10.1002/cepa.3364","DOIUrl":"https://doi.org/10.1002/cepa.3364","url":null,"abstract":"[Abstract: 1300 characters maximum] Seismic reliability of aging infrastructure, especially bridges, is crucial in earthquake-prone regions. Environmental factors like CO2 and chlorides can significantly worsen deterioration, requiring to schedule over time combined rehabilitation/retrofitting interventions, e.g. with composite materials. In this context, bridge owners need reliability-based metrics to schedule timely interventions. The present study examines the use of fabric reinforced cementitious matrix (FRCM) systems for seismic retrofitting of a common existing bridge type in Italian infrastructure. The research involves deriving fragility curves for the “as built” configuration, and for a series of deterioration scenarios and FRCM retrofitting schemes. Time-variant seismic reliability profiles are then assessed, quantifying reliability gains from FRCM retrofitting at different time instants.The results provide valuable information to support infrastructure owners in decision-making regarding seismic retrofitting strategies and scheduling of interventions, ensuring optimal bridge management and enhanced seismic resilience.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"190-197"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alternative Methods for Bayesian Updating in Modal Analysis 模态分析中贝叶斯更新的替代方法

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3358

Jan Grashorn, Yogi Jaelani, Francesca Marsili, Sylvia Keßler

引用次数: 0

Capturing of the internal structure and hidden defects as a basis for reliability analyses of large structures 捕获内部结构和隐藏缺陷是大型结构可靠性分析的基础

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3323

Christoph Heinze, Arne Pionteck, Michael Geist, Wilko Flügge

{"title":"Capturing of the internal structure and hidden defects as a basis for reliability analyses of large structures","authors":"Christoph Heinze, Arne Pionteck, Michael Geist, Wilko Flügge","doi":"10.1002/cepa.3323","DOIUrl":"https://doi.org/10.1002/cepa.3323","url":null,"abstract":"Large structures as part of the transport or energy infrastructure are inspected visually or manually using methods such as the knock test to reduce the likelihood of structural failure. Today, more advanced methods are only used in exceptional cases and locally. In addition to the size and poor accessibility, the individuality of the structures due to large manufacturing tolerances has so far prevented automated recording and evaluation. Two automation solutions are presented here that address these challenges of large structures. The ARGOS system is used for the automated inspection of wind turbine rotor blades and combines active thermography with geometry and surface capture. This enables a comprehensive analysis of the outer and inner structure. The second application, the LaserBeat system, is designed for the inspection of concrete structures, in particular the tunnel lining. Optical methods are also used here to capture the geometry and surface. However, hidden defects are detected by scanning using a pulse laser and laser vibrometer. In addition to reproducible data acquisition, these approaches also make it possible to objectify the condition assessment. The systematic use of risk management procedures and reliability analyses is only possible as a result of this improved data situation.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"206-211"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3323","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

BIM as an Enabler for Automated Manufacturing Processes - Synergies Between Robotics and Micro-Monitoring BIM作为自动化制造过程的推动者——机器人和微监控之间的协同作用

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3334

Aileen Pfeil, Ayham Kemand

{"title":"BIM as an Enabler for Automated Manufacturing Processes - Synergies Between Robotics and Micro-Monitoring","authors":"Aileen Pfeil, Ayham Kemand","doi":"10.1002/cepa.3334","DOIUrl":"https://doi.org/10.1002/cepa.3334","url":null,"abstract":"The integration of Building Information Modeling (BIM) into automated manufacturing processes creates new synergies between robotics and monitoring systems. A precise 3D building model ensures the exact positioning of components and forms the basis for controlling robotic systems. To enable a seamless workflow, precise geometric data and a clearly defined execution sequence must be established during the early planning phase. While robots operate with submillimeter accuracy under ideal conditions, external factors—such as defective components or incorrect deliveries—can lead to discrepancies between the intended and actual state. The integration of execution and real-time monitoring within robotic systems enables continuous micro-monitoring, facilitating rapid error detection and correction. Moreover, the automated acquisition and comparison of actual data within the BIM framework enhances the timeliness and integration of all process-relevant information, ensuring that all associated parameters dynamically adjust in response to disruptions. This interplay not only improves manufacturing quality but also mitigates systemic weaknesses and increases the overall level of automation.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"387-394"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3334","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incorporating Uncertainty into 3D Spatial Heatmaps for Risk Visualizations in the Built Environment 将不确定性纳入建筑环境风险可视化的3D空间热图

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3327

Markus Berger

{"title":"Incorporating Uncertainty into 3D Spatial Heatmaps for Risk Visualizations in the Built Environment","authors":"Markus Berger","doi":"10.1002/cepa.3327","DOIUrl":"https://doi.org/10.1002/cepa.3327","url":null,"abstract":"When analyzing the distribution of climate, health or similar risk-related data in the built environment, we often involve spatial heatmaps that are placed over or between existing environmental geometry. Common examples of this are indoor air-quality visualizations or city-scale maps of flood risk. These heatmaps can be based on simulations, interpolated measurement data, or other probabilistic methods that turn limited data into full spatial coverages. This means that beyond the visualized risk factor, there is always a measure of uncertainty in the data. While there has been research into showing this uncertainty on spatial heatmaps, such techniques have rarely been applied in urban scenarios with detailed building geometries. These environments introduce occlusion and other viewpoint-related issues and thus make existing cartographic techniques less effective. In this paper, we want to develop visualization strategies that effectively show uncertainty on spatial heatmaps, while circumventing issues of occlusion and viewpoint-dependency. To do so we collect common uncertainty visualization methods from the literature and conduct a preselection for this use case. We then evaluate the effectiveness of each method based on an example scenario, discussing any performance and readability issues that arise. Finally, we recommend certain configurations of methods that strike an appropriate balance between the chosen quality measures.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"117-122"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3327","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Safety Factors for Crack Initiation in Adhesive Joints by Uncertainty Quantification Analysis 用不确定度定量分析胶合接头起裂安全系数

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3321

Mathis Hach, Johannes Hopfe, Sebastian Spitzer, Philipp Weißgraeber

{"title":"Analysis of Safety Factors for Crack Initiation in Adhesive Joints by Uncertainty Quantification Analysis","authors":"Mathis Hach, Johannes Hopfe, Sebastian Spitzer, Philipp Weißgraeber","doi":"10.1002/cepa.3321","DOIUrl":"https://doi.org/10.1002/cepa.3321","url":null,"abstract":"Precisely assessing the reliability of adhesive bonds is crucial for both ensuring structural safety and reducing mass. Classical design and dimensioning methods often rely on fixed, empirically derived safety margins combined with deterministic models, which can lead to overly conservative and inefficient designs. Models based on modern crack initiation theories, such as finite fracture mechanics, offer a physics-based approach to understand the effect of uncertainties. In this study we make use of a highly efficient finite fracture mechanics solution for the analysis of adhesive joints with brittle, structural adhesives to study the effect of a large set of geometrical and material properties as well as geometrical nonlinearity and thermal residual stresses. The model allows the quantification of uncertainties stemming from variability in input parameters using probabilistic approaches. By defining survival probabilities, the results are related to conventional safety factor methods, providing insights into the limitations of empirical approaches. Furthermore, we analyze the effect of thermal eigenstrains on the nonlinear fracture analysis and make use of a clustering of individual uncertainties to discuss partial safety factors.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"274-281"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3321","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Probabilistic Simulation of Crack Propagation in Masonry Walls Using a Grain-Based Energy Accumulation Model 基于颗粒能量积累模型的砌体墙体裂纹扩展概率模拟

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.70007

Doruk Gurkut, Giovanni Muciaccia

{"title":"Probabilistic Simulation of Crack Propagation in Masonry Walls Using a Grain-Based Energy Accumulation Model","authors":"Doruk Gurkut, Giovanni Muciaccia","doi":"10.1002/cepa.70007","DOIUrl":"https://doi.org/10.1002/cepa.70007","url":null,"abstract":"Unreinforced masonry (URM) buildings constitute an important portion of the European building stock, where metal injection anchors are widely utilized for seismic retrofitting. While crack propagation in URM walls is extensively studied, the interaction between these cracks and structural anchors remains an underexplored area of research. This paper presents a probabilistic computational framework to serve as the foundation for investigating these crack-anchor interactions. The model simulates the progressive failure of a URM wall under diagonal compression using a two-dimensional discrete element approach implemented in MATLAB. The wall is discretised into brick and joint mortar grains, and the boundaries between them are assigned unique failure thresholds sampled from Weibull distributions specific to each pair of grain types constituting the boundary (Brick-Brick, Joint-Joint, and Joint-Brick). A novel crack propagation algorithm guides the formation of the crack pattern. A large ensemble of simulations was performed to generate a probabilistic crack map, which reveals a distinct diagonal shear band. The results quantitatively show that the failure is dominated by cracking at the joint-brick interfaces, which are shown to be the most probable locations for crack occurrence. The resulting heatmap provides a quantitative tool for identifying regions susceptible to crack occurrence, forming the basis for future investigations into anchor performance in cracked masonry.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"308-315"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Statistical and Machine Learning Analysis of Pullout Resistance of Power actuated fasteners (PAF) 动力驱动紧固件（PAF）拉出阻力的统计与机器学习分析

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3326

Alhussain Yousef, Panagiotis Spyridis

{"title":"A Statistical and Machine Learning Analysis of Pullout Resistance of Power actuated fasteners (PAF)","authors":"Alhussain Yousef, Panagiotis Spyridis","doi":"10.1002/cepa.3326","DOIUrl":"https://doi.org/10.1002/cepa.3326","url":null,"abstract":"Power Actuated Fasteners (PAFs) are widely used in construction for non-structural, light-duty applications due to their efficient and cost-effective installation. These fasteners are often installed in sets to improve reliability. This study focuses on predicting the pull-out capacity of individual PAFs based on experimental measurements using a machine learning approach. A Random Forest model is developed and trained on an extensive dataset of test results conducted across various concrete configurations, including both traditional concrete and fiber-reinforced concrete, using steel and synthetic fibers. Key experimental parameters such as fiber type and dosage, nail curvature, embedment depth, and surface damage characteristics are incorporated into the model. The model is thoroughly tested, and its predictive performance evaluated using standard metrics such as MAE, MSE, RMSE, and R2. The results demonstrate the model's ability to capture complex relationships between the input parameters and the pull-out capacity, offering an interpretable and data-driven tool for estimating fastener performance. This approach enhances the reliability of fastening systems by enabling performance assessment based on measurable input parameters—without the need for additional destructive testing. The methodology can be extended to other fastening technologies and construction scenarios, contributing to safer and more reliable structural design.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"250-257"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3326","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of regional context in building design on the transferability of material indicators: A case study of a residential building type in Kazakhstan and Germany 建筑设计中的地域背景对材料指标可转移性的影响：以哈萨克斯坦和德国的一种住宅建筑为例

ce/papers Pub Date : 2025-09-05 DOI: 10.1002/cepa.3339

Regine Ortlepp, Zhansaya Satanova

{"title":"Influence of regional context in building design on the transferability of material indicators: A case study of a residential building type in Kazakhstan and Germany","authors":"Regine Ortlepp, Zhansaya Satanova","doi":"10.1002/cepa.3339","DOIUrl":"https://doi.org/10.1002/cepa.3339","url":null,"abstract":"Building design is strongly influenced by regional contexts, including climatic conditions, structural requirements, and cultural preferences. These factors impact material selection and pose challenges to the transferability of building typologies and material indicators (MIs) across regions. This study examines how regional context affects design and material requirements, using a 9-story residential building as a case study based on building standards in Kazakhstan and Germany. The building was chosen for comparability, reflecting cultural differences in construction methods, such as with and without a basement. Climatic differences affect building physics requirements, influencing the material needs of the building envelope. Structural design followed reinforced concrete standards in both countries, determining material quantities. Analysis identified key factors influencing the transferability of building concepts, particularly climatic conditions—Kazakhstan's colder winters require thicker insulation walls—and Germany's cultural preference for basements, leading to higher material consumption. The study emphasizes the need for region-specific approaches to sustainable, climate-resilient design and strategies to improve the transferability of MIs across regions.","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 3-4","pages":"71-80"},"PeriodicalIF":0.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3339","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144999026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic Isolation and Damping Design of Long-span Arch Bridges and Application of Viscous Dampers 大跨度拱桥隔震减震设计及粘滞阻尼器的应用

ce/papers Pub Date : 2025-03-18 DOI: 10.1002/cepa.3167

Fan Xing

引用次数: 0