한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2001년도 춘계학술대회 논문집
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- Pages.281-288
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- 2001
교량 토공 접속부에서 궤도강성변화에 대한 실험적 연구
Experimental Study on the Variation of Track Stiffness between Earthwork and Bridge
초록
In order to evaluate the effect of impact load at support stiffness transition area, the field estimations are performed at the transition zone between earthwork and bridge on test operation of KTX. Due to differential settlement caused by the variations of track support stiffness, large impact forces are investigated. However, the measured values such as wheel load, rail stress, displacement and acceleration in the transition area shows that the stiffness changes in the transition area are not abrupt, and the stiffness in the infra track structure varies continuously. In this experimental study, the parameters influencing safety of transition area are not governed by partial or local stiffness because cumulative passing loads are not sufficient on test operation of KTX.
키워드