A performance Evaluation of Domestically-Developed Swing-Nose Crossing Turnout on Slab Track

초록

In line with current speed-up of railroad, a slab track has been increasingly adopted in a bid to secure the safety of track structure as well as to reduce the maintenance cost, and furthermore, the need for commercialization of the domestically-developed swing-nose crossing turnout on the slab track has been increasing. For commercialization of the swing-nose crossing turnout on the slab track, which was developed in Korea, a technical and systematic performance evaluation system, considering local environment, has to be established and then the performance evaluation has to be implemented accordingly. In order to commercialize the swing-nose crossing turnout on the slab track developed in Korea, the guideline of technical and systematic performance evaluation considering local environment was established in Aug. 2010. It consists of an evaluation of technical compatibility (performance test of components and design verification), laboratory performance test (assembly performance test) and in-service test. In particularly, the in-service test is comprised of monitoring, and field and on-board test during the KTX operation, where monitoring is to check the maintainability, and the field and on-board test is to confirm structural and running safety. The evaluation of technical compatibility and laboratory test of the domestically-developed swing-nose crossing turnout on the slab track (F18.5) were evaluated according to the guideline. And then the in-service test was performed for the turnout installed at the 2nd phase site of Gyeongbu HSR. This paper is intended to summarize the performance evaluation system, referring to the data available at home and abroad and the results of performance evaluation for the domestically-developed swing-nose crossing turnout on the slab track carried out to date based on such system. Based on the performance evaluation, it is proven that performance of the domestically-developed swing-nose crossing turnout on the slab track (F18.5) well meet the requirements of the guideline.