Evaluation of Running Safety According to Construction of Temporary bridge for Improvement of Train Speed

초록

Installing the temporary bridge after excavating the railway requires installing moveable cross beam, but as it does not requires isolating the catenary or cutting the rail, it’s applicable to double-track with frequent operation. In this study, wheel load and lateral pressure were measured to evaluate running safety in straight section completed using temporary bridge method. As a result of the measurement, when trains were passing over a temporary bridge, the maximum value of wheel load and lateral force were analyzed as the 31% and 44% of standard level according to foreign country’s performance tests. Therefore, it is considered that there is no trouble with safety of orbit. Additionally, derailment coefficient and ratio of wheel unloading considered as the safety standard were analyzed as below limiting value regardless of trains. So it is also considered that there is no problem with running safety.