High-speed Railway最新文献_第5页

Research on fatigue evaluation method of high-speed train axle based on axle box acceleration 基于轴箱加速度的高速列车车轴疲劳评估方法研究

High-speed Railway Pub Date : 2023-12-01 DOI: 10.1016/j.hspr.2023.12.002

Wenjing Wang , Yiming Zeng , Ruiguo Yan , Yiyue Chen

{"title":"Research on fatigue evaluation method of high-speed train axle based on axle box acceleration","authors":"Wenjing Wang , Yiming Zeng , Ruiguo Yan , Yiyue Chen","doi":"10.1016/j.hspr.2023.12.002","DOIUrl":"10.1016/j.hspr.2023.12.002","url":null,"abstract":"<div><div>As a key safety component of the high-speed train, fatigue fracture of the axle would lead to major accidents such as derailment or overturning. The complexity of the axle dynamic stress test seriously enhances the difficulty of axle fatigue damage analysis. In this paper, the dynamic stress test of the high-speed train axle was carried out, the axle box acceleration was monitored on-track during the test, and the relationship between the axle stress spectrum and acceleration was analyzed on-track. The results show that the relationships between the axle equivalent stresses and the Root Mean Square (RMS) values of the axle box vertical acceleration and lateral acceleration exhibit a strong joint probability density distribution. The concept of the virtual surface density of wheel-rail contact is also proposed to realize the purpose of using axle box acceleration to deduce axle equivalent force. The results quantify the relationship between axle box acceleration and axle equivalent force, provide a new method for predicting the axle damage using the acceleration RMS values, and open up a new approach for structural health monitoring of high-speed train axles.</div></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 4","pages":"Pages 233-240"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138610543","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

Static strength and crashworthiness analysis of a train cowcatcher at a running speed of 160 km/h

High-speed Railway Pub Date : 2023-12-01 DOI: 10.1016/j.hspr.2023.11.004

Yanzhao Guo , Lele Zhang , Weiyuan Dou , Yu Zhu , Haifeng Zhang

{"title":"Static strength and crashworthiness analysis of a train cowcatcher at a running speed of 160 km/h","authors":"Yanzhao Guo , Lele Zhang , Weiyuan Dou , Yu Zhu , Haifeng Zhang","doi":"10.1016/j.hspr.2023.11.004","DOIUrl":"10.1016/j.hspr.2023.11.004","url":null,"abstract":"<div><div>The cowcatcher is one of the unique devices at the front end of the train, which can remove obstacles on the track by crashing before the vehicle body to ensure the safety of the train. When a collision accident happens, the cowcatcher serves as the first energy-absorbing structure to dissipate and guide the collision energy. The design of the existing cowcatcher of multiple units generally focuses on the good ability to remove obstacles, while the secondary function, the crashworthiness of orderly deformation under collision, still needs further research. In this study, a finite element model of structural static load and collision analysis was established under standard EN 15227, with the cowcatcher for 160 km/h train as the prototype. Then the solution and simulation process was accomplished under the environment of ANSYS and LS-DYNA. The analysis results showed that the structural static strength of the current cowcatcher met the requirements of the standard EN 15227, and the longitudinal stiffness was evenly distributed. When removing the obstacles with low mass, the impact force was small and the structure would not produce obvious deformation; when removing the obstacles with large mass, the impact force was large and the shear fracture might occur at the connection of the cowcatcher.</div></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 4","pages":"Pages 258-264"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200325","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

Vibration-based bearing fault diagnosis of high-speed trains: A literature review

High-speed Railway Pub Date : 2023-12-01 DOI: 10.1016/j.hspr.2023.11.001

Wanchun Hu , Ge Xin , Jiayi Wu , Guoping An , Yilei Li , Ke Feng , Jerome Antoni

{"title":"Vibration-based bearing fault diagnosis of high-speed trains: A literature review","authors":"Wanchun Hu , Ge Xin , Jiayi Wu , Guoping An , Yilei Li , Ke Feng , Jerome Antoni","doi":"10.1016/j.hspr.2023.11.001","DOIUrl":"10.1016/j.hspr.2023.11.001","url":null,"abstract":"<div><div>Due to the advantages of comfort and safety, high-speed trains are gradually becoming the mainstream public transport in China. Since the operating speed and mileage of high-speed trains have achieved rapid growth, it is more and more urgent to ensure their reliability and safety. As an important component in the bogies of high-speed trains, the health state of the bearing directly affects the operational safety of the trains. It is therefore necessary to diagnoze the faults of bearings in the bogies of high-speed trains as early as possible. In this paper, the bearing fault diagnostic methods for high-speed trains have been systematically summarized with their challenges and perspectives. First, it briefly introduces the structure of bearings in the bogies as well as the fault characteristic frequencies. Then, a brief review of the research on vibration-based signal processing methods and machine learning methods has been provided. Finally, the challenges and future developments of vibration-based bearing fault diagnostic methods for high-speed trains have been analyzed.</div></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 4","pages":"Pages 219-223"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200327","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

Point cloud-based environment reconstruction and ray tracing simulations for railway tunnel channels 基于点云的铁路隧道通道环境重建与光线追踪模拟

High-speed Railway Pub Date : 2023-12-01 DOI: 10.1016/j.hspr.2023.10.001

Ziyi Qi , Ruisi He , Mi Yang , Xuejian Zhang , Bo Ai , Weiming Li , Shaopeng Wang , Wenpu Sun , Lizhe Li

引用次数: 0

Design and implementation of railway green performance basic data collection system

High-speed Railway Pub Date : 2023-12-01 DOI: 10.1016/j.hspr.2023.11.003

Xiangru Lyu, Hui Li

引用次数: 0

Research on the design of ballastless track in the subgrade section of high-speed railway in high earthquake-intensity area 高烈度地区高速铁路路基段无砟轨道设计研究

High-speed Railway Pub Date : 2023-12-01 DOI: 10.1016/j.hspr.2023.10.003

Li Yao

{"title":"Research on the design of ballastless track in the subgrade section of high-speed railway in high earthquake-intensity area","authors":"Li Yao","doi":"10.1016/j.hspr.2023.10.003","DOIUrl":"10.1016/j.hspr.2023.10.003","url":null,"abstract":"<div><div>According to the characteristics of complex terrain and bad geological conditions in the southwest mountainous area of China, it is proposed that cast-in situ double-block ballastless track with layers and blocks structure should be adopted preferentially in the subgrade section of high-speed railway, which is conducive to the construction, prolongation of service life and maintenance of the ballastless track. Based on the finite element model, the dynamic performance, structural strength and stability of double-block ballastless track under high earthquake-intensity action are analyzed. The analysis shows that the relative displacement between the base slab of ballastless track and the subgrade may occur under 9 degree earthquake action. A new CRTS double-block ballastless track structure with a concave-convex structure between the base slab and the subgrade is proposed in the subgrade section, and its additional stress and relative displacement under earthquake are analyzed. The results show that the additional stress and relative displacement of the new ballastless track structure and the subgrade under 9- degree earthquake actions are small, which meet the high stability requirements of high-speed railway.</div></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 4","pages":"Pages 273-279"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136159664","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

Performance of the suspension method in large cross-section shallow-buried tunnels

High-speed Railway Pub Date : 2023-12-01 DOI: 10.1016/j.hspr.2023.11.002

Guoqing Cai , Xinxiang Zou , Qiang Zhang , Rui Yang , Tianchi Wu , Jiguang Li

{"title":"Performance of the suspension method in large cross-section shallow-buried tunnels","authors":"Guoqing Cai , Xinxiang Zou , Qiang Zhang , Rui Yang , Tianchi Wu , Jiguang Li","doi":"10.1016/j.hspr.2023.11.002","DOIUrl":"10.1016/j.hspr.2023.11.002","url":null,"abstract":"<div><div>Large cross-section tunnel construction induces ground surface settlements, potentially endangering both subterranean projects and nearby above-ground structures. A novel tunnel construction method, known as the suspension method, is introduced in this paper to mitigate surface settlement. The suspension method employs vertical tie rods to establish a structural connection between the initial tunnel support system and the surface steel beam, thereby exerting effective control settlements. To analyze the performance of the proposed method, systematic numerical simulations were conducted based on the practical engineering of Harbin Subway Line 3. The surface settlement and vault settlement characteristics during construction are investigated. The results show a gradual increment in both surface and vault settlement throughout the construction process, culminating in a stabilized state upon the completion of construction. In addition, compared to the double-side drift method and the Cross Diaphragm Method (CRD) method, the suspension method can obviously reduce the surface settlement and vault settlement. Moreover, the surface settlements and the axial force of tie rods were continuously monitored during the construction process at the trial tunnel block. These specific monitoring measurements are illustrated in comparison to numerical analysis results. The monitored results show great agreement with the numerical predictions, confirming the success of the project. This research can serve as a valuable practical reference for similar projects, offering insights and guidance for addressing ground surface settlements and enhancing construction safety in the domain of large cross-section tunneling.</div></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 4","pages":"Pages 224-232"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200326","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

Refined disturbance observer based prescribed performance fixed-time control of high-speed EMS Trains with track irregularities 基于扰动观测器的轨道不平整高速EMS列车预定性能定时控制

High-speed Railway Pub Date : 2023-09-01 DOI: 10.1016/j.hspr.2023.09.001

Yiran Xie, Boyang Zhao, Xiuming Yao

引用次数: 0

Development of a software platform for bridge modal and damage identification based on ambient excitation 基于环境激励的桥梁模态与损伤识别软件平台的开发

High-speed Railway Pub Date : 2023-09-01 DOI: 10.1016/j.hspr.2023.09.003

Jiahuan Li, Li Zhu, Wenyu Ji, Sunfeng You

{"title":"Development of a software platform for bridge modal and damage identification based on ambient excitation","authors":"Jiahuan Li, Li Zhu, Wenyu Ji, Sunfeng You","doi":"10.1016/j.hspr.2023.09.003","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.09.003","url":null,"abstract":"<div><p>Modal and damage identification based on ambient excitation can greatly improve the efficiency of high-speed railway bridge vibration detection. This paper first describes the basic principles of stochastic subspace identification, peak-picking, and frequency domain decomposition method in modal analysis based on ambient excitation, and the effectiveness of these three methods is verified through finite element calculation and numerical simulation. Then the damage element is added to the finite element model to simulate the crack, and the curvature mode difference and the curvature mode area difference square ratio are calculated by using the stochastic subspace identification results to verify their ability of damage identification and location. Finally, the above modal and damage identification techniques are integrated to develop a bridge modal and damage identification software platform. The final results show that all three modal identification methods can accurately identify the vibration frequency and mode shape, both damage identification methods can accurately identify and locate the damage, and the developed software platform is simple and efficient.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 3","pages":"Pages 162-170"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949867823000405/pdfft?md5=39e61979d0df0503c93d9e8f98f3841d&pid=1-s2.0-S2949867823000405-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90011970","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

Refined disturbance observer based prescribed performance fixed-time control of high-speed EMS trains with track irregularities 基于扰动观测器的轨道不平整高速EMS列车预定性能定时控制

High-speed Railway Pub Date : 2023-09-01 DOI: 10.1016/j.hspr.2023.09.001

Yiran Xie, Boyang Zhao, Xiuming Yao

{"title":"Refined disturbance observer based prescribed performance fixed-time control of high-speed EMS trains with track irregularities","authors":"Yiran Xie, Boyang Zhao, Xiuming Yao","doi":"10.1016/j.hspr.2023.09.001","DOIUrl":"https://doi.org/10.1016/j.hspr.2023.09.001","url":null,"abstract":"<div><p>High-speed Electromagnetic Suspension (EMS) train is continuously impacted by the irregularity of the track, which worsens the levitation performance of the train. In this paper, a composite control scheme for the EMS is proposed to suppress track irregularities by integrating a Refined Disturbance Observer (RDO) and a Prescribed Performance Fixed-Time Controller (PPFTC). The RDO is designed to estimate precisely the track irregularities and lumped disturbances with uncertainties and exogenous disturbances in the suspension system, and reduce input chattering by applying to the disturbance compensation channel. PPFTC is designed to converge the suspension air gap error to equilibrium point with prescribed performance by completing error conversion, and solve the fast dynamic issue of EMS. And the boundary of overshoot and steady-state is limited in the ranged prescribed. A theoretical analysis is conducted on the stability of the proposed control method. Finally, the effectiveness and reasonability of the proposed composite anti-disturbance control scheme is verified by simulation results.</p></div>","PeriodicalId":100607,"journal":{"name":"High-speed Railway","volume":"1 3","pages":"Pages 171-178"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949867823000351/pdfft?md5=3df66dad792017c91cf764af7add0f0d&pid=1-s2.0-S2949867823000351-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91668673","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