Investigation of prestressed concrete sleeper’s vibration located at KM71.75 And KM79

Train has been one of the essential and convenient transportation choices for community nowadays. Instead of carrying a passenger, these types of facilities also can be used to transport material across our country. With the increasing usage of train every year, the rate of accidents has also increased dramatically. Therefore, the importance of studying about the railway can contribute to building better and comfort railway track which can deliver their services at its best for an extended period. This study focused on the measurement of the deflection of concrete sleepers which affect the performance of the railway track. Lack of actual deflection value from the site can be problematic to ensure the quality of the track itself. The method used for the analysis is by using the Sirius-M instrument which can be recorded and analyses the acceleration of the concrete sleepers when receiving the loading wave from a moving train. The data of acceleration then can be transformed into deflection form by applying double integration. From the data collection, it shows that the maximum deflection at northbound at KM79 is 13.72 mm for freight train and 1.5 mm at southbound for six set commuter train. As for KM 71.75, the maximum deflection at northbound is 0.57mm for ETS and 1.5mm at southbound for six set commuter train. Thus, from this research, the actual deflection value from both sites were achieved.