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Evaluation of Track irregularity due to Adjacent Excavation Work on Serviced Urban Transit

도시철도 인접굴착공사에 따른 운행선 궤도의 궤도틀림 분석

  • 최정열 (동양대학교 건설공학과) ;
  • 이호현 (산강이엔씨(주) 기술연구소) ;
  • 강유송 ((주)유신, 도시철도부) ;
  • 정지승 (동양대학교 건설공학과)
  • Received : 2020.03.23
  • Accepted : 2020.04.19
  • Published : 2020.05.31

Abstract

In this study, finite element analysis was performed to evaluate the track irregularity of the existing track system on urban transit according to the large-scale excavation work that is constructed adjacent to the serviced line. Based on the numerical analysis, the effect of track irregularity generated during the step-by-step construction process was analytically derived, and the stability in terms of track deformation was evaluated through comparison with related standards. As the results, in the case of track irregularity items evaluated based on the relative displacement difference at a certain distance, such as alignment and vertical irregularity, it occurred most clearly at the location where deformation of the existing structure begins, such as the end point of adjacent excavation work. On the other hand, the overall vertical and horizontal displacement of the track was the largest deformation at the center of the construction section. The vulnerable position of the deformed side of the existing structure due to adjacent excavation is analytically proven that the both of the end point section and the center of the construction can be a vulnerable position in terms of track irregularity.

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