To explore the effect of canyon topography on the seismic response of railway irregular bridge–track system that crosses a V-shaped canyon, seismic ground motions of the horizontal site and V-shaped canyon site were simulated through theoretical analysis with 12 earthquake records selected from the Pacific Earthquake Engineering Research Center (PEER) Strong Ground Motion Database matching the site condition of the bridge. Nonlinear seismic response analyses of an existing 11-span irregular simply supported railway bridge–track system were performed under the simulated spatially varying ground motions. The effects of the V-shaped canyon topography on the peak ground acceleration at bridge foundations and seismic responses of the bridge–track system were analyzed. Comparisons between the results of horizontal and V-shaped canyon sites show that the top relative displacement between adjacent piers at the junction of the incident side and the back side of the V-shaped site is almost two times that of the horizontal site, which also determines the seismic response of the fastener. The maximum displacement of the fastener occurs in the V-shaped canyon site and is 1.4 times larger than that in the horizontal site. Neglecting the effect of V-shaped canyon leads to the inappropriate assessment of the maximum seismic response of the irregular high-speed railway bridge–track system. Moreover, engineers should focus on the girder end to the left or right of the two fasteners within the distance of track seismic damage.
{"title":"Seismic analysis of high-speed railway irregular bridge–track system considering V-shaped canyon effect","authors":"Zhu, Zhihui, Tang, Yongjiu, Ba, Zhenning, Wang, Kun, Gong, Wei","doi":"10.1007/s40534-021-00262-x","DOIUrl":"https://doi.org/10.1007/s40534-021-00262-x","url":null,"abstract":"<p>To explore the effect of canyon topography on the seismic response of railway irregular bridge–track system that crosses a V-shaped canyon, seismic ground motions of the horizontal site and V-shaped canyon site were simulated through theoretical analysis with 12 earthquake records selected from the Pacific Earthquake Engineering Research Center (PEER) Strong Ground Motion Database matching the site condition of the bridge. Nonlinear seismic response analyses of an existing 11-span irregular simply supported railway bridge–track system were performed under the simulated spatially varying ground motions. The effects of the V-shaped canyon topography on the peak ground acceleration at bridge foundations and seismic responses of the bridge–track system were analyzed. Comparisons between the results of horizontal and V-shaped canyon sites show that the top relative displacement between adjacent piers at the junction of the incident side and the back side of the V-shaped site is almost two times that of the horizontal site, which also determines the seismic response of the fastener. The maximum displacement of the fastener occurs in the V-shaped canyon site and is 1.4 times larger than that in the horizontal site. Neglecting the effect of V-shaped canyon leads to the inappropriate assessment of the maximum seismic response of the irregular high-speed railway bridge–track system. Moreover, engineers should focus on the girder end to the left or right of the two fasteners within the distance of track seismic damage.</p>","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"39 2","pages":""},"PeriodicalIF":6.3,"publicationDate":"2021-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138527587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-20DOI: 10.1007/s40534-021-00252-z
Ye, Yunguang, Huang, Ping, Zhang, Yongxiang
Fault detection and isolation of high-speed train suspension systems is of critical importance to guarantee train running safety. Firstly, the existing methods concerning fault detection or isolation of train suspension systems are briefly reviewed and divided into two categories, i.e., model-based and data-driven approaches. The advantages and disadvantages of these two categories of approaches are briefly summarized. Secondly, a 1D convolution network-based fault diagnostic method for high-speed train suspension systems is designed. To improve the robustness of the method, a Gaussian white noise strategy (GWN-strategy) for immunity to track irregularities and an edge sample training strategy (EST-strategy) for immunity to wheel wear are proposed. The whole network is called GWN-EST-1DCNN method. Thirdly, to show the performance of this method, a multibody dynamics simulation model of a high-speed train is built to generate the lateral acceleration of a bogie frame corresponding to different track irregularities, wheel profiles, and secondary suspension faults. The simulated signals are then inputted into the diagnostic network, and the results show the correctness and superiority of the GWN-EST-1DCNN method. Finally, the 1DCNN method is further validated using tracking data of a CRH3 train running on a high-speed railway line.
{"title":"Deep learning-based fault diagnostic network of high-speed train secondary suspension systems for immunity to track irregularities and wheel wear","authors":"Ye, Yunguang, Huang, Ping, Zhang, Yongxiang","doi":"10.1007/s40534-021-00252-z","DOIUrl":"https://doi.org/10.1007/s40534-021-00252-z","url":null,"abstract":"<p>Fault detection and isolation of high-speed train suspension systems is of critical importance to guarantee train running safety. Firstly, the existing methods concerning fault detection or isolation of train suspension systems are briefly reviewed and divided into two categories, i.e., model-based and data-driven approaches. The advantages and disadvantages of these two categories of approaches are briefly summarized. Secondly, a 1D convolution network-based fault diagnostic method for high-speed train suspension systems is designed. To improve the robustness of the method, a Gaussian white noise strategy (GWN-strategy) for immunity to track irregularities and an edge sample training strategy (EST-strategy) for immunity to wheel wear are proposed. The whole network is called GWN-EST-1DCNN method. Thirdly, to show the performance of this method, a multibody dynamics simulation model of a high-speed train is built to generate the lateral acceleration of a bogie frame corresponding to different track irregularities, wheel profiles, and secondary suspension faults. The simulated signals are then inputted into the diagnostic network, and the results show the correctness and superiority of the GWN-EST-1DCNN method. Finally, the 1DCNN method is further validated using tracking data of a CRH3 train running on a high-speed railway line.</p>","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"43 1","pages":""},"PeriodicalIF":6.3,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138527588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1007/s40534-021-00259-6
N. Zhang, Zi-ji Zhou, Zhaozhi Wu
{"title":"Safety evaluation of a vehicle–bridge interaction system using the pseudo-excitation method","authors":"N. Zhang, Zi-ji Zhou, Zhaozhi Wu","doi":"10.1007/s40534-021-00259-6","DOIUrl":"https://doi.org/10.1007/s40534-021-00259-6","url":null,"abstract":"","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"30 1","pages":"41 - 56"},"PeriodicalIF":6.3,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"52824407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-06DOI: 10.1007/s40534-021-00258-7
Z. Dai, Tian Li, N. Zhou, Ji-ye Zhang, Weihua Zhang
{"title":"Numerical simulation and optimization of aerodynamic uplift force of a high-speed pantograph","authors":"Z. Dai, Tian Li, N. Zhou, Ji-ye Zhang, Weihua Zhang","doi":"10.1007/s40534-021-00258-7","DOIUrl":"https://doi.org/10.1007/s40534-021-00258-7","url":null,"abstract":"","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"30 1","pages":"117 - 128"},"PeriodicalIF":6.3,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41448839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-27DOI: 10.1007/s40534-021-00253-y
V. Krishna, S. Hossein-Nia, C. Casanueva, S. Stichel, G. Trummer, K. Six
{"title":"Rail RCF damage quantification and comparison for different damage models","authors":"V. Krishna, S. Hossein-Nia, C. Casanueva, S. Stichel, G. Trummer, K. Six","doi":"10.1007/s40534-021-00253-y","DOIUrl":"https://doi.org/10.1007/s40534-021-00253-y","url":null,"abstract":"","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"30 1","pages":"23 - 40"},"PeriodicalIF":6.3,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"52824390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1007/s40534-021-00254-x
M. Spiryagin, R. Dixon, K. Oldknow, C. Cole
{"title":"Preface to special issue on hybrid and hydrogen technologies for railway operations","authors":"M. Spiryagin, R. Dixon, K. Oldknow, C. Cole","doi":"10.1007/s40534-021-00254-x","DOIUrl":"https://doi.org/10.1007/s40534-021-00254-x","url":null,"abstract":"","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"29 1","pages":"211 - 211"},"PeriodicalIF":6.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48172979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1007/s40534-021-00257-8
Y. Sun, M. Anwar, N. Hassan, M. Spiryagin, C. Cole
{"title":"A review of hydrogen technologies and engineering solutions for railway vehicle design and operations","authors":"Y. Sun, M. Anwar, N. Hassan, M. Spiryagin, C. Cole","doi":"10.1007/s40534-021-00257-8","DOIUrl":"https://doi.org/10.1007/s40534-021-00257-8","url":null,"abstract":"","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"29 1","pages":"212 - 232"},"PeriodicalIF":6.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43935141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1007/s40534-021-00256-9
Charles Calvert, J. Allan, P. Amor, S. Hillmansen, Clive Roberts, P. Weston
{"title":"Concept development and testing of the UK’s first hydrogen-hybrid train (HydroFLEX)","authors":"Charles Calvert, J. Allan, P. Amor, S. Hillmansen, Clive Roberts, P. Weston","doi":"10.1007/s40534-021-00256-9","DOIUrl":"https://doi.org/10.1007/s40534-021-00256-9","url":null,"abstract":"","PeriodicalId":41270,"journal":{"name":"Railway Engineering Science","volume":"29 1","pages":"248 - 257"},"PeriodicalIF":6.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45305597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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