Pub Date : 2015-01-01DOI: 10.3969/J.ISSN.1001-8361.2015.07.005
Siqun Ma, Huitang Jin, S. Xie, Y. Yuan, Wenzhong Zhao, P. Dong
{"title":"Research on residual stress of multi-pass welding for KK end of high speed EMUs","authors":"Siqun Ma, Huitang Jin, S. Xie, Y. Yuan, Wenzhong Zhao, P. Dong","doi":"10.3969/J.ISSN.1001-8361.2015.07.005","DOIUrl":"https://doi.org/10.3969/J.ISSN.1001-8361.2015.07.005","url":null,"abstract":"","PeriodicalId":35766,"journal":{"name":"Tiedao Xuebao/Journal of the China Railway Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70068091","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}
Pub Date : 2014-01-01DOI: 10.1007/978-3-642-53778-3_13
Kan Dong, Li-jun Diao, Leiting Zhao, Yizhou Chen, Zhigang Liu
{"title":"Research on Beat-Less Control Strategy Based on Frequency-Domain Analysis","authors":"Kan Dong, Li-jun Diao, Leiting Zhao, Yizhou Chen, Zhigang Liu","doi":"10.1007/978-3-642-53778-3_13","DOIUrl":"https://doi.org/10.1007/978-3-642-53778-3_13","url":null,"abstract":"","PeriodicalId":35766,"journal":{"name":"Tiedao Xuebao/Journal of the China Railway Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51097466","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}
Pub Date : 2013-01-01DOI: 10.3969/J.ISSN.1001-8360.2013.11.001
Yongsheng Zhang, E. Yao, Hongna Dai
Transfer volume forecasting is the basis of transfer station design, passenger flow organization and emergency scheme formulation. Along with rapid development of Metro networking operation in recent years, transfer volume forecasting for the Metro system in networking conditions becomes an important issue to be solved. In this paper, the transfer volume forecasting method was proposed on the basis of route choice analysis and passenger flow distribution. Taking into consideration the variables of level of service such as the ride time, number of transfers, transfer time and congestion degree and introducing in the index of angular cost value to describe the influence of network structures and route directions on route choices, the route choice model was established to analyze passengers' route choice preferences. Through equivalent ride time conversion of the above influential factors and analysis on the degree of passenger tolerance to travel time, the effective route set of all OD (Origin-Destination) pairs was constructed with the K-shortest paths algorithm. Then stochastic assignment was carried out with the MSA (method of successive averages) algorithm under constraint of the first and last train and the statistical method was put forward to calculate the transfer volumes of all transfer stations within a specified time interval. Finally, the transfer volumes of the Beijing Subway were estimated with the proposed transfer volume forecasting method. The results show that the angular cost value significantly influences the route choice behavior and the proposed method can provide good reliability and accuracy.
{"title":"Transfer Volume Forecasting Method for the Metro in Networking Conditions","authors":"Yongsheng Zhang, E. Yao, Hongna Dai","doi":"10.3969/J.ISSN.1001-8360.2013.11.001","DOIUrl":"https://doi.org/10.3969/J.ISSN.1001-8360.2013.11.001","url":null,"abstract":"Transfer volume forecasting is the basis of transfer station design, passenger flow organization and emergency scheme formulation. Along with rapid development of Metro networking operation in recent years, transfer volume forecasting for the Metro system in networking conditions becomes an important issue to be solved. In this paper, the transfer volume forecasting method was proposed on the basis of route choice analysis and passenger flow distribution. Taking into consideration the variables of level of service such as the ride time, number of transfers, transfer time and congestion degree and introducing in the index of angular cost value to describe the influence of network structures and route directions on route choices, the route choice model was established to analyze passengers' route choice preferences. Through equivalent ride time conversion of the above influential factors and analysis on the degree of passenger tolerance to travel time, the effective route set of all OD (Origin-Destination) pairs was constructed with the K-shortest paths algorithm. Then stochastic assignment was carried out with the MSA (method of successive averages) algorithm under constraint of the first and last train and the statistical method was put forward to calculate the transfer volumes of all transfer stations within a specified time interval. Finally, the transfer volumes of the Beijing Subway were estimated with the proposed transfer volume forecasting method. The results show that the angular cost value significantly influences the route choice behavior and the proposed method can provide good reliability and accuracy.","PeriodicalId":35766,"journal":{"name":"Tiedao Xuebao/Journal of the China Railway Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70068047","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}
Pub Date : 2012-04-01DOI: 10.3969/J.ISSN.1001-8360.2012.04.004
Wang Wangang, Wu Guangning, Gao Guoqiang, Wang Bo, Cui Yi, Liu Donglai
High speed electric multi units (EMU) get power through pantograph-centenary electrical contact. As the EMU running velocity increases, rail surface irregularities, undulations of the catenary and vibrations of the pantograph head cause the status of pantograph-centenary electrical contact to deteriorate seriously and generate pantograph-catenary arcs frequently. The arcs erode the contact wire and pantograph strip, endanger the current-receiving quality between pantograph and catenary and restrain further raizing of the EMU speed. So it is very important to study the pantograph-catenary arcs. In this paper, the pantograph-catenary current-receiving process was analyzed. The pantograph-catenary arc test system was developed, which simulated the flexible and straight contact of pantograph and contact wire, pantograph strip zigzag movements and vertical up and down movements of the pantograph. The test system was used to study, the pantograph-catenary contact resistance, and the electrical parameters and shape features of the arcs.
{"title":"The Pantograph-catenary Arc Test system for High-speed Railways","authors":"Wang Wangang, Wu Guangning, Gao Guoqiang, Wang Bo, Cui Yi, Liu Donglai","doi":"10.3969/J.ISSN.1001-8360.2012.04.004","DOIUrl":"https://doi.org/10.3969/J.ISSN.1001-8360.2012.04.004","url":null,"abstract":"High speed electric multi units (EMU) get power through pantograph-centenary electrical contact. As the EMU running velocity increases, rail surface irregularities, undulations of the catenary and vibrations of the pantograph head cause the status of pantograph-centenary electrical contact to deteriorate seriously and generate pantograph-catenary arcs frequently. The arcs erode the contact wire and pantograph strip, endanger the current-receiving quality between pantograph and catenary and restrain further raizing of the EMU speed. So it is very important to study the pantograph-catenary arcs. In this paper, the pantograph-catenary current-receiving process was analyzed. The pantograph-catenary arc test system was developed, which simulated the flexible and straight contact of pantograph and contact wire, pantograph strip zigzag movements and vertical up and down movements of the pantograph. The test system was used to study, the pantograph-catenary contact resistance, and the electrical parameters and shape features of the arcs.","PeriodicalId":35766,"journal":{"name":"Tiedao Xuebao/Journal of the China Railway Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70068512","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}
Pub Date : 2010-01-01DOI: 10.3969/J.ISSN.1001-8360.2010.02.002
W. Jia, B. Mao, T. Ho, Hd Liu
Track allocation at large-scale railway passenger stations means to allocate conflict-free routes and platforms to trains within the space-time constraints specified in train diaqrams and site plans of the stations.A constraints-based approach is taken to track allocation.First,the constraints are divided into hard and soft ones which reflect the safety requirements of station operation and preferences for selection of tacks and routes;then the solution process is carried out in three steps: constraints detecting,value ordering and backtracking.Case study of large-scale passenger station shows that track allocation solutions can be obtained by using the proposed methed.The method provides technical support for check of train diagram feasibility and formulation of station operation schedules.
{"title":"Model and algorithm for track allocation at large-scale railway passenger stations","authors":"W. Jia, B. Mao, T. Ho, Hd Liu","doi":"10.3969/J.ISSN.1001-8360.2010.02.002","DOIUrl":"https://doi.org/10.3969/J.ISSN.1001-8360.2010.02.002","url":null,"abstract":"Track allocation at large-scale railway passenger stations means to allocate conflict-free routes and platforms to trains within the space-time constraints specified in train diaqrams and site plans of the stations.A constraints-based approach is taken to track allocation.First,the constraints are divided into hard and soft ones which reflect the safety requirements of station operation and preferences for selection of tacks and routes;then the solution process is carried out in three steps: constraints detecting,value ordering and backtracking.Case study of large-scale passenger station shows that track allocation solutions can be obtained by using the proposed methed.The method provides technical support for check of train diagram feasibility and formulation of station operation schedules.","PeriodicalId":35766,"journal":{"name":"Tiedao Xuebao/Journal of the China Railway Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70068496","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}
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