교량 토공 접속부에서 궤도강성변화에 대한 실험적 연구

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 mesured values such as wheel load, rail stree, disgplacement and acceleration in the transition area shows that stiffness changes in the transition area are not aburupt, 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 baceuse cumulative passing loads are not syfficient on test operation of KTX.