Infrastructures最新文献_第6页

Indexing the Maintenance Priority of Road Safety Barriers in Urban and Peri-Urban Contexts: Application of a Ranking Methodology in Bologna, Italy 城市和城市周边环境中道路安全障碍维护优先级指数化：排序方法在意大利博洛尼亚的应用

IF 2.6

Infrastructures Pub Date : 2023-12-16 DOI: 10.3390/infrastructures8120181

Alessandro Nalin, Andrea Simone, C. Lantieri, Umberto Rosatella, G. Dondi, V. Vignali

{"title":"Indexing the Maintenance Priority of Road Safety Barriers in Urban and Peri-Urban Contexts: Application of a Ranking Methodology in Bologna, Italy","authors":"Alessandro Nalin, Andrea Simone, C. Lantieri, Umberto Rosatella, G. Dondi, V. Vignali","doi":"10.3390/infrastructures8120181","DOIUrl":"https://doi.org/10.3390/infrastructures8120181","url":null,"abstract":"The need for clear and updated information is pivotal when authorities plan and perform routinary, periodic and emergency maintenance of both road network and their roadside assets, e.g., curbs, signals, and barriers. With particular regard to road barriers, the development of remote sensing technologies, such as Laser Imaging Detection and Ranging (LiDAR), has played a disruptive role in acquiring information, so the surveys today are predominantly automatic, faster, and less biased than the traditional (i.e., visual and manual) inventorying methodologies. However, even though they are accurate, these emerging procedures usually focus only on the surveyed elements and do not provide any other information about the surrounding environment or about the qualitative degradation of the elements. The primary objective of this research effort was to present a ranking methodology for enhancing road safety in urban contexts. Due to an innovative synthetic index which takes into account both the deterioration and the location of the surveyed elements, maintenance priority of road barriers was outlined in Bologna, Italy. All the collected information was georeferenced in a Geographic Information System (GIS) environment and hence plotted in thematic maps for an easier analysis. In addition, compliance to the norm was verified. The research was tested to provide public authorities with an effective tool in the evaluation of maintenance activities and road safety policies.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966981","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

Improvements in Urban Rapid Transit Boarding and Alighting Safety during System Modernization 在系统现代化过程中改善城市快速轨道交通的上下车安全

IF 2.6

Infrastructures Pub Date : 2023-12-15 DOI: 10.3390/infrastructures8120179

Igor Gisterek, A. Hyliński

{"title":"Improvements in Urban Rapid Transit Boarding and Alighting Safety during System Modernization","authors":"Igor Gisterek, A. Hyliński","doi":"10.3390/infrastructures8120179","DOIUrl":"https://doi.org/10.3390/infrastructures8120179","url":null,"abstract":"Urban rail transport has advantages that determine its particular usefulness. However, despite decades of technical development, it is still difficult to speak about satisfactory solutions. Safe, independent access to this transport and public infrastructure for passengers with reduced mobility (PRM) is an essential element of civil rights and an interesting subject of scientific research. In relation to that, the interface between rail vehicle and platform, despite multiple efforts aiming at improving this situation, is one of the hardest problems to overcome. This paper presents a summary and analyses of distinctive features of selected transit systems that are interesting from the viewpoint of finding various solutions to improve the safety of passengers on platforms. This analysis led to preparation of a new, improved standard of the vehicle–platform interface, illustrated with an example of the city of Wrocław, as discussed further in this paper. Some of the main conclusions of this paper are that insufficient progress has been made with developing the vehicle–platform interface, there are a multitude of systems and ways of (more or less effectively) ensuring independent access for PRM, and further research and development work is needed to optimize engineering solutions in this domain so they are both sustainable and economical.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999240","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

Predicting Trajectories of Plate-Type Wind-Borne Debris in Turbulent Wind Flow with Uncertainties 预测具有不确定性的湍流风中板状风载碎片的轨迹

IF 2.6

Infrastructures Pub Date : 2023-12-15 DOI: 10.3390/infrastructures8120180

Feng Wang, Peng Huang, Rongxin Zhao, Huayong Wu, Mengjin Sun, Zijie Zhou, Yun Xing

{"title":"Predicting Trajectories of Plate-Type Wind-Borne Debris in Turbulent Wind Flow with Uncertainties","authors":"Feng Wang, Peng Huang, Rongxin Zhao, Huayong Wu, Mengjin Sun, Zijie Zhou, Yun Xing","doi":"10.3390/infrastructures8120180","DOIUrl":"https://doi.org/10.3390/infrastructures8120180","url":null,"abstract":"Debris poses multifaceted risks and jeopardizes various aspects of the environment, human health, safety, and infrastructure. The debris trajectory in turbulent wind flow is more dispersed due to the inherent randomness of the turbulent winds. This paper investigates the three-dimensional trajectories of plate-type wind-borne debris in turbulent wind fields via the method of numerical simulation. A 3D probabilistic trajectory model of plate-type wind-borne debris is developed. The debris trajectories are numerically calculated by solving the governing equation of debris motion and by introducing turbulent wind flows based on the near-ground wind field measured in the wind tunnel to account for the probability characteristics of the debris trajectory. The dimensionless velocities and displacements of the debris trajectory show good agreement with the experimental data in wind tunnel tests, confirming the rationality of the probabilistic trajectory model. Based on the validated trajectory model, the probability characteristics of the debris impact position, impact velocity, and kinetic energy, debris angular displacement, and angular velocity are analyzed in detail under five different wind attack angles. The proposed probabilistic model of plate-type debris in turbulent wind flow provides an accurate and effective method for predicting debris trajectory in three-dimensional space.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138996743","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

Battery Electric Buses or Fuel Cell Electric Buses? A Decarbonization Case Study in the City of Brescia, Italy 电池电动公交车还是燃料电池电动公交车？意大利布雷西亚市的脱碳案例研究

IF 2.6

Infrastructures Pub Date : 2023-12-11 DOI: 10.3390/infrastructures8120178

F. Borghetti, Michela Longo, M. Bonera, Marco Libretti, C. Somaschini, Valentina Martinelli, Marco Medeghini, Renato Mazzoncini

{"title":"Battery Electric Buses or Fuel Cell Electric Buses? A Decarbonization Case Study in the City of Brescia, Italy","authors":"F. Borghetti, Michela Longo, M. Bonera, Marco Libretti, C. Somaschini, Valentina Martinelli, Marco Medeghini, Renato Mazzoncini","doi":"10.3390/infrastructures8120178","DOIUrl":"https://doi.org/10.3390/infrastructures8120178","url":null,"abstract":"Nowadays, designing and adopting sustainable and greener transport systems is of upmost interest. The European Commission and different EU countries are developing plans and programs—but also delivering resources—aimed at the decarbonization of cities and transport by 2030. In this paper, the case study of the city of Brescia, a city of about 200,000 inhabitants located in northern Italy, is addressed. Specifically, a preliminary operational and financial feasibility study is performed assuming the replacement of the entire compressed natural gas (CNG) powered bus fleet of a specific line; the two alternatives considered are battery electric buses (BEBs) and fuel cell electric buses (FCEBs). For the comparison and evaluation of the two alternatives, specific economic parameters of the three alternatives (BEB, FCEB and the current solution CNGB) were considered: CAPEX (CAPital EXpenditure) and OPEX (OPerational EXpenditure). This allowed us to determine the TCO (total cost of ownership) and TCRO (total cost and revenues of ownership) along three annuities (2022, 2025 and 2030). For the BEB alternative, the TCO and TCRO values are between EUR 0.58/km and EUR 0.91/km. In the case of the FCEB solution, the values of TCO and TCRO are between EUR 1.75/km and EUR 2.15/km. Considering the current CNGB solution, the TCO and TCRO values range between EUR 1.43/km and EUR 1.51/km.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139010468","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

Evaluation Methodology of the Railway Stations Using the AHP Method in the Transport Hubs from the Freight Transport Point of View 从货运角度看交通枢纽中使用 AHP 方法的火车站评估方法

IF 2.6

Infrastructures Pub Date : 2023-12-10 DOI: 10.3390/infrastructures8120177

Adrián Šperka, Juraj Čamaj, Milan Dedík, Zdenka Bulková

{"title":"Evaluation Methodology of the Railway Stations Using the AHP Method in the Transport Hubs from the Freight Transport Point of View","authors":"Adrián Šperka, Juraj Čamaj, Milan Dedík, Zdenka Bulková","doi":"10.3390/infrastructures8120177","DOIUrl":"https://doi.org/10.3390/infrastructures8120177","url":null,"abstract":"Currently, it is necessary to support not only public passenger transport at the expense of individual car transport but also to ensure the modal split of goods from road transport to railway transport. Moreover, it is important to modernize the railway infrastructure, especially hubs and other important railway stations in important settlements and big cities. Therefore, it is necessary to constantly invest in railway lines as well as railway stations. The contribution deals with the determination of the methodology for the evaluation of railway stations in freight transport based on current scientific publications and the AHP method. Its main goal is to determine the size of the peak on the network-railway station on the infrastructure manager’s railway network. One of the benefits is the subsequent determination of the next procedure from the given peak in terms of operation, considering the economic complexity of the entire procedure. The methodology is preceded by an extensive analysis of input data in Slovakia and abroad. This methodology defines the parameters or factors that influence decisions for a particular railway freight station. Subsequently, based on the proposed methodology, a practical application is also developed, within which four railway stations on the ŽSR network are evaluated. In a broader sense, the contribution also points to improving the quality of railway infrastructure in cities.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138982777","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

Damage Identification of Turnout Rail through a Covariance-Based Condition Index and Quantitative Pattern Analysis 通过基于协方差的状态指数和定量模式分析识别道岔钢轨的损坏情况

IF 2.6

Infrastructures Pub Date : 2023-12-08 DOI: 10.3390/infrastructures8120176

Jun-Fang Wang, Jian-Fu Lin, Yan-Long Xie

{"title":"Damage Identification of Turnout Rail through a Covariance-Based Condition Index and Quantitative Pattern Analysis","authors":"Jun-Fang Wang, Jian-Fu Lin, Yan-Long Xie","doi":"10.3390/infrastructures8120176","DOIUrl":"https://doi.org/10.3390/infrastructures8120176","url":null,"abstract":"Subjected to complex loadings from the wheel–rail interaction, turnout rail is prone to crack damage. This paper aims to develop a condition evaluation method for crack-alike damage detection of in-service turnout rail. A covariance-based structural condition index (CI) is firstly constructed by fusing the time-frequency components of responses, generating a series of patterns governed by the interrelationships between column members in the CI matrix. The damage-sensitive interrelationships latent in CI are then modeled using Bayesian regression and historical data, and baseline patterns are built with predictions of the models and new inputs. The deviations between the baseline patterns and the actual patterns of the newly observed CI members are quantitatively assessed. To synthetically consider the individual assessment results, a technique is developed to combine the individual assessment results into one synthetic result by designing a group of suitable weights taking into consideration both probabilistic confidence and reference model error. If the deviations are within a tolerable range, no damage is flagged; otherwise, damage existence and severity are reported. A case study is conducted, in which monitoring data from the database of a railway turnout are applied to build the CI matrix and examine the damage identification performance of this method. Good agreement between actual conditions and assessment results is found in different testing scenarios in the case study, demonstrating the effectiveness of the proposed method.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138587806","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

The Application of Bamboo in the Railway Industry: A Sustainable Solution for Track Construction 竹子在铁路行业中的应用：轨道建设的可持续解决方案

IF 2.6

Infrastructures Pub Date : 2023-12-07 DOI: 10.3390/infrastructures8120174

Xinrui He, Wenli Jia, Yuxiang Dong, M. Siahkouhi

{"title":"The Application of Bamboo in the Railway Industry: A Sustainable Solution for Track Construction","authors":"Xinrui He, Wenli Jia, Yuxiang Dong, M. Siahkouhi","doi":"10.3390/infrastructures8120174","DOIUrl":"https://doi.org/10.3390/infrastructures8120174","url":null,"abstract":"The railway industry has shown a strong interest in utilizing sustainable materials, including recycled materials and composites, in construction. Bamboo, as a highly renewable natural resource, has been proposed as a construction material for the railway industry. This material offers several advantages, such as high strength and durability, sustainability, low embodied energy, and ease of handling. It has been used in various construction materials like plywood, scrimber, laminates, and fibers. This paper aims to review the application of bamboo as a material in the railway industry and provide suggestions for its future use as railway sleepers. The mechanical properties of bamboo and its desirable features for sleeper construction, such as versatility, durability, low embodied energy and carbon footprint, lightweight, and ease of handling, are discussed. Bamboo-based products like plywood and scrimber can offer higher mechanical properties compared to traditional timber sleepers. Moreover, due to its rapid growth rate, bamboo is considered an environmentally friendly material. However, there are certain factors that limit the widespread deployment of bamboo in the railway industry. For instance, the lightweight nature of bamboo can reduce the lateral resistance of sleepers. Additionally, long-term performance studies and its performance in regions with varying weather conditions need to be further investigated. This review paper aims to promote the increased utilization of bamboo in the railway industry, contributing to the development of sustainable railway tracks. By considering the mechanical properties and advantageous characteristics of bamboo, it is possible to explore its potential as a viable and eco-friendly material for railway sleepers.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138593802","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

Operational Modal Analysis on Bridges: A Comprehensive Review 桥梁运行模式分析：全面回顾

IF 2.6

Infrastructures Pub Date : 2023-12-04 DOI: 10.3390/infrastructures8120172

Hamed Hasani, Francesco Freddi

引用次数: 0

The Structural Reliability of the Usumacinta Bridge Using InSAR Time Series of Semi-Static Displacements 利用 InSAR 半静态位移时间序列分析乌苏马辛塔大桥的结构可靠性

IF 2.6

Infrastructures Pub Date : 2023-12-04 DOI: 10.3390/infrastructures8120173

G. M. Guzmán-Acevedo, J. A. Quintana-Rodriguez, J. R. Gaxiola-Camacho, G. E. Vazquez-Becerra, Vanessa Torres-Moreno, J. G. Monjardin-Quevedo

{"title":"The Structural Reliability of the Usumacinta Bridge Using InSAR Time Series of Semi-Static Displacements","authors":"G. M. Guzmán-Acevedo, J. A. Quintana-Rodriguez, J. R. Gaxiola-Camacho, G. E. Vazquez-Becerra, Vanessa Torres-Moreno, J. G. Monjardin-Quevedo","doi":"10.3390/infrastructures8120173","DOIUrl":"https://doi.org/10.3390/infrastructures8120173","url":null,"abstract":"In recent years, Interferometric Synthetic Aperture Radar (InSAR) technology has been able to determine the semi-static behavior of bridges. However, most of the research about the use of InSAR in the monitoring of bridges has been applied only in deterministic assessments of their performance. Therefore, in the current manuscript, the Usumacinta Bridge, located in Mexico, was evaluated based on a probabilistic methodology to define structural reliability using images from Sentinel-1. In addition, a controlled experiment was developed using a corner reflector (CR) to evaluate the capabilities of InSAR for determining vertical displacements. In the trial, the CR was designed, oriented, and implemented, finding discrepancies concerning leveling of less than 2 mm. On the other hand, the case of the alternative probabilistic approach integrates the reliability of structures theory and probability density functions (PDFs) of displacements obtained via InSAR technology. In summary, the proposed study focused on the analysis of two years of vertical displacements and monthly velocities; then, implementing the alternative probabilistic approach, the reliability index (β) and probability of risk (PR) of the bridge were extracted, respectively. Based on the results of the experimental part of the paper, the displacements indicated maximum and minimum values of reliability index of 8.1 and 3.4, respectively. Within this context, the mean and standard deviation obtained were 5.9 and 1.4, respectively. On the other hand, the monthly velocities showed a maximum probability of risk of 2.61%, minimum value of 1.5 × 10−5%, mean of 0.4%, and standard deviation of 0.8%. Hence, the above-documented results indicate that the Usumacinta Bridge did not suffer any damage during its overloading condition period.","PeriodicalId":13601,"journal":{"name":"Infrastructures","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138603514","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

Dam Safety History and Practice: Is There Room for Improvement? 大坝安全的历史与实践：是否有改进的余地？

IF 2.6

Infrastructures Pub Date : 2023-12-01 DOI: 10.3390/infrastructures8120171

Rodrigo Joaquín Contreras, Ignacio Escuder-Bueno

引用次数: 0