DYNAMIC BEHAVIOR OF SPLIT PC SLEEPERS COMPARED WITH WOODEN TIES USING THE FIELD TEST

초록

The major objective of this study is to investigate the dynamic behavior evaluation of split PC sleepers for railway turnout by the field test. In railway engineering, a turnout is necessary to allow a vehicle to move from one track to another. So, turnout is required very complex track structure such as a tongue rail, lead rail and a crossing which has a gap part. In reference to conventional line speed-up and improvement railway, a turnout needs more accurate assembly and that affects traveling qualification of turnout area and running safety. Because of heavy weight and large volume of a switch PC sleeper which used to turnout and car limit, the prerequisite for trouble-free transport to the construction site of pre-assembled major turnout components in the factory is to develop a split PC sleeper through division of turnout sleepers. The one of the advantages for using a split sleeper is to reduce the dynamic vibration according to the information of developed nations. Therefore, we investigate the characteristic of dynamic behaviors of split sleepers which are adopted for the first time to improve performance of turnout from the field test results of the split sleeper, it is evaluated that the modification of weight, material and stiffness compared with wood sleeper is very effective for the ballast safety.