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Journal of the Korean Society of Hazard Mitigation 2013;13(5):277-284.
Published online October 31, 2013.
PSC 교량 위를 고속주행 중인 KTX 전동차의 윤하중 동적해석
오순택, 이동준, 이정훈
Dynamic Analysis of Wheel Forces of KTX Vehicle Running with High-Speed on the PSC Bridge
Soon-Taek Oh, Dong Jun Lee, Jung Hoon Lee
Abstract
Dynamic analysis of wheel forces of KTX vehicle was carried out to compare the differences of wheel force (D.W.F.) and wheel force ratios (W.F.R.) on the road and bridge up to 450 km/h running speed, considering the interactions among vehicle/rail/bridge. An evaluation method of running safety of vehicles, lateral wheel force, derail factor, and offload factor are adopted for traffic safety of bridges.
Key Words: PSC bridge; Wheel force ratio; Interaction; Running Safety of Vehicles; Traffic safety of bridges
요지
PSC 철도교량의 동적거동과 관련하여 차량/궤도/교량의 상호 작용력을 고려한 KTX 전동차의 윤하중을 주행속도 450 km/h 범위까지 해석하고, 전면대차의 4개 차륜의 윤하중 최대 값과 최소 값의 차이와 윤하중비를 일반도상과 교량 상 응답으로 나누어 비교 분석하였다. 차량안정성을 평가하는 기준으로 적용하여 횡압과 탈선계수 그리고 윤중감소율을 적용하여 교량의 주행안정성을 평가하였다.
핵심용어: 고속철 PSC 교량; 윤하중비; 상호작용력; 차량안정성; 교량주행안정성


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