Evaluation of Train Running Safety During Construction of Temporary Bridge on Existing Railway

기존선에서 가설교량 시공에 따른 열차의 주행안전성 평가

  • 엄기영 (한국철도기술연구원 고속철도 인프라시스템 연구단) ;
  • 배재형 (한국철도기술연구원 고속철도 인프라시스템 연구단) ;
  • 최찬용 (한국철도기술연구원 고속철도 인프라시스템 연구단)
  • Received : 2010.10.07
  • Accepted : 2011.02.24
  • Published : 2011.06.26


Installing the temporary bridge after excavating the railway requires installing movable cross beam, but as it doesn't requires isolating the catenary or cutting the rail, it's applicable to double-track with frequent operation. In this study, a displacement meter was placed on temporary bridge to monitor the displacement pattern in curve section (R400) completed using temporary bridge method, and wheel load, lateral pressure and derailment coefficient were measured to evaluate the load imposed on track and the stability in curve section (R400) for quantitative evaluation of training running safety. As a result of the measurement, when trains passing over a temporary bridge, the maximum value of Wheel load and Lateral Force is analyzed as the 51% and 81% of standard level according to foreign country's performance tests, There is no trouble with stability analysis in Wheel load and Lateral Force occurring. Additionally, Wheel load and Lateral Force considered as the safety standard are tested 49% of limiting value regardless of trains, which the norm value quite well, there is no problem with train running.


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