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M. Tsunemoto, N. Fukushima, T. Saito, Y. Kondo, H. Takahashi, "Influence of Outgoing Feeders on Natural Period of Overhead Contact Line Equipment at Traction Power Supply Facility", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 10.5, 2026, doi:10.4203/ccc.15.10.5

Keywords: electric railway, overhead contact line equipment, seismic performance, natural period, natural frequency, vibration analysis.

Abstract

In the Shinkansen, Japan’s high-speed railway network, the supports of the overhead contact line equipment located at traction power supply facilities consist of multiple masts interconnected by beams. Outgoing feeders are installed between the traction power supply facilities and the overhead contact line equipment. If the supports at traction power supply facilities are fractured or otherwise damaged during an earthquake, they are difficult to replace because of the complex structural configuration. Consequently, the restoration time is lengthened from that of restoring general supports. The supports installed on viaducts are known to experience amplified seismic vibrations when their natural period approaches that of the viaduct. Therefore, accurately estimating the natural period of the supports is essential in the seismic design of overhead contact line equipment. However, the influence of outgoing feeders on the natural period of the supports has not been clarified. This study analyses vibration measurements collected at a full-scale test facility and clarifies the influence of the outgoing feeders on the natural period of the supports. The analysed natural period and seismic response of the supports agree with the measured values.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 15 PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 10.5 Influence of Outgoing Feeders on Natural Period of Overhead Contact Line Equipment at Traction Power Supply Facility M. Tsunemoto¹, N. Fukushima¹, T. Saito¹, Y. Kondo¹ and H. Takahashi² ¹, Railway Technical Research Institute, Japan ², East Japan Railway Company, Japan doi:10.4203/ccc.15.10.5 Full Bibliographic Reference for this paper M. Tsunemoto, N. Fukushima, T. Saito, Y. Kondo, H. Takahashi, "Influence of Outgoing Feeders on Natural Period of Overhead Contact Line Equipment at Traction Power Supply Facility", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 10.5, 2026, doi:10.4203/ccc.15.10.5 Keywords: electric railway, overhead contact line equipment, seismic performance, natural period, natural frequency, vibration analysis. Abstract In the Shinkansen, Japan’s high-speed railway network, the supports of the overhead contact line equipment located at traction power supply facilities consist of multiple masts interconnected by beams. Outgoing feeders are installed between the traction power supply facilities and the overhead contact line equipment. If the supports at traction power supply facilities are fractured or otherwise damaged during an earthquake, they are difficult to replace because of the complex structural configuration. Consequently, the restoration time is lengthened from that of restoring general supports. The supports installed on viaducts are known to experience amplified seismic vibrations when their natural period approaches that of the viaduct. Therefore, accurately estimating the natural period of the supports is essential in the seismic design of overhead contact line equipment. However, the influence of outgoing feeders on the natural period of the supports has not been clarified. This study analyses vibration measurements collected at a full-scale test facility and clarifies the influence of the outgoing feeders on the natural period of the supports. The analysed natural period and seismic response of the supports agree with the measured values. download the full-text of this paper (PDF, 11 pages, 1324 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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