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내 망간 크로싱 유지관리 지침에는 크로싱부의 마모한계에 따른 교체 및 보수가 주를 이루고 있으며 철도하중과 같이 반복되는 피로하중에 대한 균열, 처짐 등의 검토가 간과되어온 실정이다. 이에 열차 주행에 의한 망간 크로싱의 활하중 변동응력을 측정하여 레인플로우법을 이용한 응력빈도 해석을 수행함으로써 피로 손상도를 추정하고 대상부재에 대한 피로수명을 평가하였다.


The major objective of this study is to investigate the fatigue life evaluation of immovability crossing for railway turnout by the field test. In railway engineering, an appliance is necessary to allow a vehicle to move from one track to another. This appliance came to be known technically as turnout. So, turnout is required very complex railway technologies such as rolling stock, track. Due to the plan under the application of high speed train, turnout are needed more stable for fatigue behaviors. It analyzed the mechanical behaviors of turnout crossing with propose its advanced technical type on the field test and fatigue evaluation for the dynamic fatigue characteristics. As a result, the advanced type crossing are obviously effective for the fatigue damage ratio and dynamic response which is non-modified type. The analytical and experimental study are carried out to investigate the passing path of contact surface and fatigue damage trend decrease dynamic stresses and deflections on advanced crossing type. And the advanced type reduce dynamic fatigue damage ratio and increase fatigue life(about each 38%) more than non-modified type. From the field test results of the servicing turnout crossing, it is evaluated that the modification of contact angle, weight, material and sectional properties is very effective for ensure against fatigue risks.