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RISS 인기검색어
- 검색키워드
- 저자 : 장우진(Woo-Jean Jang) (검색결과 1 건)
- 무료
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- 유료
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이재봉(Jae-Bong Lee),장우진(Woo-Jean Jang),조용현(Yong-Hyeon Cho),이기원(Ki-Won Lee),소선영(Sun-Young So),박종학(Jong-Hak Park) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
There are 5 railway bridges in a Seoul metro network; Jamsil, Dangsan(line 2), Dongho(line 3), Dongjak(line 4) and Chungdam(line 7). Because there are strong wind and vibration in the bridges, uplift of a contact wire caused by pantographs in the bridge section is higher than in a normal section. If the uplift at the support point exceed 10 ㎝, an interference between pantographs and catenary system happens. Estimated maximum uplift is obtained by applying safety factor 2 to the simulation results. The application of the safety factor is needed for taking into account of the effect of the wind, etc. Previously, we can not check whether or not the safety factor is proper. Recently, we can measure the uplift during the train operation, as a telemetry system which can measure dynamic behavior of the contact wire has been developed. The aim of this research is to review how proper the safety factor related to the uplift is, based on the measurement. We performed simulations and experiments for the uplift at the Jamsil railway bridge. The simulations were performed for the every kind of the train passing the Jamsil bridge. In order to compare the analysis results with the measurement results, we measured the uplifts at the support when the trains passed the measuring point. Finally, we proposed adequate safety factor with the uplift for the bridge section.
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