{"title":"The research on the high strength and anti-arc ablation coatings applied in steel conductive rail","authors":"Yihu Ma , Wenbo Yu , Chaosheng Ma , Guozheng Ma","doi":"10.1016/j.hspr.2023.08.002","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.08.002","url":null,"abstract":"<div><p>In order to enhance the ablation-resistant performance of stainless-steel conductive rails, Mo coating, 410 stainless steel coating and 15 wt% Cr<sub>2</sub>AlC particles reinforced 410 stainless steel composite coating were prepared and evaluated. Different from the weak interfacial strength caused by the dissimilar metals between Mo and steel rails, 410 stainless steel coating has better interfacial contact with steel rails. The introduction of Cr<sub>2</sub>AlC into 410 stainless steels further strengthened the mechanical properties of coating by alloy strengthening effect and particle strengthening effect, as the decomposition of Cr<sub>2</sub>AlC into nano CrC particles is accompanied with the diffusion of Al atoms into 410 stainless steels. It was found that the composite coating can still resist arc erosion at 150 A current, as a dense oxide film formed during the ablation process and the decomposition of Cr<sub>2</sub>AlC contributed to the heat absorption.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 3","pages":"Pages 179-184"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949867823000326/pdfft?md5=cce55c43351dc78176b62db83be24352&pid=1-s2.0-S2949867823000326-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91668672","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}
{"title":"Virtual sample generation for model-based prognostics and health management of on-board high-speed train control system","authors":"Jiang Liu , Baigen Cai , Jinlan Wang , Jian Wang","doi":"10.1016/j.hspr.2023.08.003","DOIUrl":"10.1016/j.hspr.2023.08.003","url":null,"abstract":"<div><p>In view of class imbalance in data-driven modeling for Prognostics and Health Management (PHM), existing classification methods may fail in generating effective fault prediction models for the on-board high-speed train control equipment. A virtual sample generation solution based on Generative Adversarial Network (GAN) is proposed to overcome this shortcoming. Aiming at augmenting the sample classes with the imbalanced data problem, the GAN-based virtual sample generation strategy is embedded into the establishment of fault prediction models. Under the PHM framework of the on-board train control system, the virtual sample generation principle and the detailed procedures are presented. With the enhanced class-balancing mechanism and the designed sample augmentation logic, the PHM scheme of the on-board train control equipment has powerful data condition adaptability and can effectively predict the fault probability and life cycle status. Practical data from a specific type of on-board train control system is employed for the validation of the presented solution. The comparative results indicate that GAN-based sample augmentation is capable of achieving a desirable sample balancing level and enhancing the performance of correspondingly derived fault prediction models for the Condition-based Maintenance (CBM) operations.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 3","pages":"Pages 153-161"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949867823000338/pdfft?md5=6eeea0547e12285cda1b991909520ac0&pid=1-s2.0-S2949867823000338-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85306302","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}
{"title":"The research on the high strength and anti-arc ablation coatings applied in steel conductive rail","authors":"Yihu Ma, Wenbo Yu, Chao-li Ma, Guozheng Ma","doi":"10.1016/j.hspr.2023.08.002","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.08.002","url":null,"abstract":"","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91341869","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}
Jinghan Zhang, Jiayuan Li, Beisheng Liu, Hui Li, Wei Yang
{"title":"The design and application of BIM + refined management and control platform for the Jingxiong Railway Bridge","authors":"Jinghan Zhang, Jiayuan Li, Beisheng Liu, Hui Li, Wei Yang","doi":"10.1016/j.hspr.2023.07.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.07.001","url":null,"abstract":"","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78798138","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}
{"title":"Real-time high-speed train rescheduling based on a Human-Computer Interaction framework","authors":"Wenhao Zhu , Tao Zhang , Zhipeng Ying , Zhengwen Liao , Xiaojie Luan , Lingyun Meng","doi":"10.1016/j.hspr.2023.06.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.06.001","url":null,"abstract":"<div><p>During railway operations, trains normally run as scheduled, but the occurrence of unexpected events will disrupt traffic flow and cause train deviation from the original timetable. In order to assist dispatchers in rescheduling trains, this paper introduces an innovative Human-Computer Interaction framework. This framework enables train dispatchers to propose different timetable adjustment instructions to the original or adjusted timetable. These instructions will be processed, stored, analyzed, and digested by computer program, which finally lead to the modification and calculation of the embedded mathematical model, then a new adjusted timetable will be produced and provided to dispatchers for checking and modifying. This framework can iterate for unlimited times based on dispatchers’ intentions, until the final results satisfy them. A demonstration system named RTARS (Real-time Timetable Automatic Rescheduling System) is developed based on this framework and it has been applied in Beijing Railway Administration, which shows its effectiveness in reality.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 2","pages":"Pages 130-140"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49701235","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}
{"title":"Mechanical properties of foamed polyurethane solidified ballasted track","authors":"Yang Xu, Luchao Qie, Hong Wang, Wenying Yu","doi":"10.1016/j.hspr.2023.04.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.04.001","url":null,"abstract":"<div><p>Foamed Polyurethane Solidified Ballasted Track (FPSBT), an innovative railway track, is formed by solidifying ballast bed with foamed polyurethane. Compared with the traditional Discrete Ballasted Track (DBT), FPSBT does not require regular maintenance such as tamping and cleaning. However, limited studies exist on the mechanical properties of FPSBT. In this study, Laboratory experiments are conducted on polyurethane samples to investigate the effects of polyurethane density on the mechanical properties of FPSBT. Furthermore, the performance of DBT and FPSBT with different polyurethane densities are compared, and the recommended polyurethane density is obtained. FPSBT exhibited negligible accumulation of deformation under cyclic loads, indicating excellent performance of FPSBT owing to the anti-deformation properties of polyurethane. Further, a track load vehicle test is conducted. FPSBT exhibited better load-transmitting ability than DBT. Finally, the construction and application of FPSBT in China are introduced. This study is expected to contribute to realizing a more extensive application of FPSBT.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 2","pages":"Pages 120-129"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49700136","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}
{"title":"Research on the intelligent supervision and operation platform of railway real estate","authors":"Xiangru Lv, Hui Li, Beisheng Liu","doi":"10.1016/j.hspr.2023.01.003","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.01.003","url":null,"abstract":"<div><p>Railway real estate is the fundamental element of railway transportation production and operation. Effective management and rational utilization of railway real estate is essential for railway asset operation. Based on the investigation of the requirements of railway real estate management and operation, combined with Beidou positioning, GIS (Geographic Information System), multi-source data fusion and other cutting-edge technologies, this paper puts forward the multi-dimensional dynamic statistical method of real estate information, the identification method of railway land occupation and the comprehensive evaluation method of real estate development and utilization potential, and build the railway real estate supervision and operation platform, design the function of the platform, so as to provide intelligent solutions for the railway real estate operation.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 2","pages":"Pages 147-152"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49701279","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}
{"title":"TCP-LTE/5 G Cross-layer performance analysis tool for high mobility data networking and a case study on high-speed railway","authors":"Ruihan Li, Yueyang Pan, Xiangtian Ma, Haotian Xu, Chenren Xu","doi":"10.1016/j.hspr.2023.05.002","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.05.002","url":null,"abstract":"<div><p>Nowadays, high mobility scenarios have become increasingly common. The widespread adoption of High-speed Rail (HSR) in China exemplifies this trend, while more promising use cases, such as vehicle-to-everything, continue to emerge. However, the Internet access provided in high mobility environments still struggles to achieve seamless connectivity. The next generation of wireless cellular technology 5 G further poses more requirements on the end-to-end evolution to fully utilize its ultra-high band-width, while existing network diagnostic tools focus on above-IP layers or below-IP layers only. We then propose HiMoDiag, which enables flexible online analysis of the network performance in a cross-layer manner, i.e., from the top (application layer) to the bottom (physical layer). We believe HiMoDiag could greatly simplify the process of pinpointing the deficiencies of the Internet access delivery on HSR, lead to more timely optimization and ultimately help to improve the network performance.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 2","pages":"Pages 141-146"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49701274","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}