무도상 교량 레일 장대화시 침목고정장치 강성에 따른 궤도-교량 상호작용 영향 분석
Analysis of Track-Bridge Interaction Effect according to Stiffness of Sleeper Fastener Device in Ballastless Track Bridge with CWR Installed
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초록
최근 국내에는 열차속도의 증가로 궤도의 취약부인 레일 이음매를 보완할 수 있는 장대레일은 필수적인 요소이다. 이러한 장대레일은 열차의 진동을 제거하여 쾌적한 승차감을 줄 뿐만 아니라 궤도 유지보수주기 연장으로 유지보수비용 절감에도 큰 기여를 한다. 그러나 국내에 1900년대부터 건설되어 현재까지 가장 많이 부설된 무도상 교량은 레일장대화시 발생하는 부가응력으로 인해 레일 장대화가 어려운 실정이다. 이러한 무도상 교량의 구성품인 침목고정장치의 강성은 레일장대화시 궤도-교량 상호작용에 의한 부가응력에 지대한 영향을 미친다. 따라서 본 논문에서는 침목고정장치 강성의 제어로 레일 장대화에 대한 가능성을 검토하고자 침목고정장치 강성에 따른 궤도-교량 상호작용의 영향을 분석하였다.
Abstract
In recent years, in Korea, the speed of train has been increased drastically. So it is essential to installing continuous welded rail to complement the rail joint which is the vulnerable point of the track. Continuous welded rail not only can offer the pleasant ride for the passengers by remove the vibration of train but also it can make a huge contribution on the reduction of maintenance cost by extending the track maintenance period. In Korea, ballastless track bridge has been constructed since 1900s and it has been the most constructed type. However, it is difficult to install continuous welded rail in ballastless track bridge because of the additional stress caused during the installation of continuous welded rail. The stiffness of the sleeper fastener device, which is a component of ballastless track bridge, has a great influence on the additional stress due to track-bridge interaction when installing continuous welded rail. Thus, in this paper, in order to examine the possibility of installation of continuous welded rail by controlling the stiffness of sleeper fastener device, the influence of track-brdige interaction is analyzed according to stiffness of sleeper fastener device.
참고문헌 (11)
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