| Title |
Analysis of the Contact Wire Wear Pattern According to the Pre-sag |
| Authors |
이인희(Lee, In-Hee) ; 박재영(Park, Jae-Young) |
| DOI |
https://doi.org/10.5370/KIEE.2015.64.10.1501 |
| Keywords |
Pre-sag ; Contact wire ; Wear pattern ; Catenary ; Span |
| Abstract |
The contact wire pre-sag in railway overhead catenary has been considered as a innovative idea which improves the current collection quality and is expected to evenly distribute wear along a span. However, long term studies on the effects of pre-sag, especially on the quantitative wear pattern of the contact wire, have not yet been reported. Therefore, in this study, the pre-sag and wear pattern of the contact wire along a span from long term operation of railway in Korea was surveyed. The examination was conducted on 3 lines, the Gyeongbu high-speed line with pre-sag of span/2000, the Gyeongbu existing line without pre-sag, and Gyeongchun line with pre-sag installation on 1/1000 of its span. The wear measurements of 58 sample spans were examined. The wear pattern analysis show no interrelationships between pre-sag and evenly distributed wear, but more wear occurred at the center of a span compared to the ends of the span, especially more noticeable as span length increases. |